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Page 1 年 4 月 中国 应用 语言学 （季刊） Apr. 2012 第 35 卷 第 2 期 Chinese Journal of Applied 2012 Linguistics (Quarterly) Vol. 35 No. 2 135 Current Trends in RA Research and SLA Directions for Future Development Michael H. L ONG University of Maryland, USA Abstract SLA is a broad interdisciplinary field. Its theories and research findings have potential relevance for a number of significant social issues. They include first language acquisition, theoretical linguistics, neurolinguistics, language acquisition in abnormal populations, language teaching, and language in education. Work in the field is motivated by the need to solve practical problems in those areas, but also by sheer intellectual curiosity. Second language learning, the object of study, is internal, individual, in part, innately specified, cognitive process. SLA's natural home, it follows, lies within cognitive science. There, it can make substantial contribution over and above understanding how second, including foreign, languages are learned, why are children are so successful, the role of metalinguistic knowledge and explicit and implicit learning, the role of the linguistic environment, and more. The fact that not only natural experiments, but also real ones, are possible (and legal) with adults means that SLA research can be of importance as the dissociation of language and cognition, maturational constraints on learning, relationships among affective and cognitive variables, and other factors typically confounded in simultaneous language and cognitive development in children. The potential SLA's contribution is well illustrated by work on the so-called Critical Period Hypothesis. SLA is also a young science, most work having been conducted since the 1980s. The field shows its youth in a number of ways, disagreements as to the proper scope of inquiry and notes unrelated, intemperate rush to theory being just two of them. The American philosopher of Larry Laudan's concept of "research tradition" offers a way of seeing the wood from the trees with respect to multiple theories in any field, and his "problem-solving" notion is a useful yardstick when it comes to the comparative evaluation of theories of SLA. Substantive future progress, and arguably, the prospects of future research in the field as a whole, will require greater clarity and maturity in these areas. Words: second language acquisition Page 2 Current Trends in SLA Research and Directions for Future Development History and scope of SLA 136 Second language learning has fascinated observers for a long time. Valuable diary studies of children bilingualism were published as early as the first years of the twentieth century (for a historical listing, see Hatch, 1978: 3-9). As shown by the coverage in textbooks, however, SLA as a modern field of study is generally accepted as dating from the late 1960's, meaning that the discipline as we know it today is still relatively young by the standards even of the social sciences. Modern second language acquisition (SLA) research encompasses non-native language development (but also simultaneous childhood bilingualism) by children or naturalistically adults learning and / or with formal aid instruction, as individuals or in groups, in foreign, second language, or lingua franca settings. "Second" includes third, fourth, etc., "language" includes dialect, and "acquisition" includes attrition and loss. SLA is a broad church, in other words; some think too broad, others not broad enough. Yet while the field has expanded rapidly and diversified during the past 40 years, the principal motivations for studying SLA has a constant constant, and in my opinion, will continue to do so. In addition to sheer intellectual curiosity, at least six broad academic and professional

identified areas, many participants have an interest in SLA, and some of them work, equally, is of interest to SLA researchers. All six areas fall within the purview of cognitive science, although not all work in them can be considered truly scientific. It is worth reminding ourselves of what those areas are. For one thing, most can be preoccupied with just one or two of them, and can forget what drives other work. First language acquisition Problems in first language acquisition (L1A) are difficult or even impossible to resolves using first language data alone. The fact that not only natural experiments also real ones are possible (and legal) with important adult means that SLA research can the throw light matters as relationships between language development and cognitive development, and among affective and cognitive variables. These and other factors are typically confounded in simultaneous language and cognitive development in children, but (with some exceptions) distinct in adult L2 acquirers. Testing rival claims about putative sensitive periods for language development is another question to which answers can be provided by research on adult SLA. (We will return to work on maturational constraints and the so-called Critical Period Hypothesis.) Theoretical linguistics Like much L1A research, a number of SLA studies are motivated by, and in some cases chiefly of interest to, theoretical linguists. Thus, claims by Keenan and Comrie (1976 and elsewhere) about typological markness and relative clause formation across languages have inspired a continuing line of work on the development of relative clauses in L2 (Doughty, 1991; Eckman et al., 1988; Gass, 1982; and Hamilton, 1994, among others). Studies testing various aspects ,of theories of Universal Grammar in SLA (eg Page 3 Michael H. L ONG Schwartz & Gubala-Ryzak, 1992; White, 1991, 2003) are so many as to have 137 spawned their own journal, Second Language Research , and their own annual conference, GASLA (Generative Approaches to Second Language Acquisition), but still to figure prominently in many others. L2 work conducted within other linguistic frameworks, notably, O'Grady's general nativist, emergentist theory (O'Grady, 1996, 2003, 2005; O'Grady, Lee, & Kwak, H.-Y., 2009; Wolfe-Quintero, 1996) is gathering pace. Neurolinguistics There is an obvious mutual interest among neurolinguists and SLA researchers in almost any advance in our understanding of how, when and where linguistic knowledge develops and is represented in the brain, and of neurophysiological conditions or changes that can affect the location, timing or developmental process. Frameworks as different as Minimalism and connectionism involves explicit assumptions or claims about cerebral development and linguistic knowledge, and many SLA theories implicitly or explicitly recognize the potential impact of such phenomena as lateralization, localization, myelinization, modularity, and biologically based sensitive periods for language development. The same is true of several related areas of inquiry, such as first language acquisition and language learning in abnormal populations. Advances in brain sciences have stimulated interesting work in SLA, but the benefits of having no means have been all on one side (see, eg, Albert & Obler, 1978; Beretta, 2009; Jacobs, 1988; Jacobs & Schumann, 1992; Kroll & Sunderman, 2003; Paradis, 2004, 2009; Schumann, 1998; Schumann, Crowell, Jones, Lee, Schuchert & Wood, 2004). Language learning in abnormal populations The misfortunes of abnormal populations often create "natural experiments", in which people attempt language acquisition in unusual circumstances, eg, without sight or hearing, often relatively late in life (Curtiss, 1988; Newport, 1990), or without being able to negotiate their linguistic environment, as in the case of socially isolated hearing children of deaf parents (Sachs, Bard & Johnson, 1981) or child neglect, but not abuse (Culp, Watkins, Lawrence, Letts, Kelly & Rice, 1991). These "experiments" have often provided insights into language acquisition in normal populations (see, eg, Curtiss, 1980). It is

heartening when some degree of reciprocity is achieved, therefore, and (S) LA research findings with normal populations prove useful to members of disadvantaged groups, such as the hearing impaired (Berent, 1996; Strong, 1988). An outstanding work of Cummins (1984) on the educational testing of immigrant children, and specifically means of learning disabilities from difficulties (and sometimes by the testing itself) being conducted through the medium of what for the children concerned is a second language. Many an immigrant child has been consigned to the "learning disabled" category, or worse, by a teacher or tester unfamiliar with normal processes and problems in L2 development. Another example is the role of various kinds of inputs and conversation for first and second language learning on the design of a language intervention program for Down's Syndrome children (see Mahoney, 1975, for an early Page 4 Current Trends in SLA Research and Directions for Future Development report). Language 138 intervention for some mentally different populations involving many of the same manner, place, and timing questions as does conventional language teaching to adults. Mahoney successfully circumvented the problem created by him inadequate ratio of patients in need for language intervention by investing a few hours a week in training the parents in how to converse optimally with their children, so they could provide a linguistically nurturing environment in the home. Research findings on adjustments made by native speakers conversing with non-natives became a useful source of information in work. Language teaching The most obvious and widespread use of SLA theory and research is to improve second and foreign language teaching. SLA, after all, is the process language teaching is designed to facilitate. SLA findings and theories have influenced language teaching in many ways over the years. For instances, evidence of developmental sequences in interlanguage development (Ortega, 2009), the modulated role of L1 - L2 differences (Kellerman & Sharwood-Smith, 1986; Odlin, 1989, 2003), the inevitability and constructive role of errors, and constraints on learnability and teachability (Pienemann, 1984), have a result in a healthy skepticism regarding the psycholinguistic viability of structural syllabuses and, in general, of synthetic approaches to language teaching. In their place, and motivated in part by the same theory and research findings, the field is currently witnessing (i) wider use of non-linguistic units of analysis, notably "task", in syllabus design (Doughty & Long, 2003; Long, 1985, 2000; Long & Crookes, 1992; Long & Norris, 2000; Robinson, 2003, 2009; Skehan, 2001), (ii) a renewed appreciation of the roles of both explicit processes (DeKeyser, 2003) and implicit processes (Ellis, 2005; Williams, 2009) in language learning, eg, the potential negative feedback, as provided by recasts (Li, 2010; Long, 2007; Mackey & Goo, 2007), instead of the traditional dependence on models (positive evidence) in classroom instruction, (iii) recognition of the insufficiency and inefficiency of pure diet of incidental learning via exclusive focus on meaning, or communication (Hulstijn, 2003; Norris & Ortega, 2000), and (iv) interest in focusing on form as a psycholinguistically motivated alternative to the traditional oscillation between focus on forms and exclusive focus on meaning (Long & Robinson, 1998). Numerous conclusions have been drawn over the years about how best to teach, and about how best not to, conclusions are strongly influenced, although far from exclusively (rightfully so), by work in SLA (see, eg, Doughty & Williams, 1998). Publications regularly appear, one of the main purposes is to survey SLA theory and research findings for language teachers (see, eg, Doughty, 2003; Gass, 1997; Lightbown & Spada, 1993; Long, to appear; Long & Doughty, 2009). Differential views sharply as to the usefulness to date of SLA research in regard, as well as to its potential for helping language teachers, but its impact on second and foreign language teaching has been pervasive and

undeniable. Language in education Just as important, and potentially affecting the educational life chances of hundreds of people Page 5 Michael H. L ONG millions of children and young adults around the world, are the implications of 139 SLA theory and research for the design, implementation and evaluation of education programs, often whole education systems, delivered through the medium of a second language. Everybody's views as a merit of particular proposals, work by Cummins, Genesee, Krashen, Lightbown, Swain, and others have had a major impact on bilingual, subject matter, and immersion education in both foreign and second language settings (see, eg, California State Department of Education, 1984; Cummins, 2009; Phillipson & Skutnabb-Kangas, 2009; Skutnabb-Kangas, 2000). The field has rich, thus far largely untapped, potential for education in second dialect situations, too (for some initial proposals, see Malcolm, 1994; Sato, 1989; Siegel, 1999, 2003), and for educational languages planning in general. Many countries are always continents, if they have access to education and training programs at all, children and adults must often receive their classes through what is a second language for them, and sometimes both for them and their teachers (see, eg, Watson-Gegeo & Gegeo, 1995). Most of the L2 literature related to such as situations to date, while important, has been treated macro-issues of politics, economics, education and sociolinguistics, rather than work at the micro level of syllabus and materials design, methodology, and classroom processes. Both are needed if an analysis is to constitute a truly explanatory "thick explanation" (Watson-Gegeo, 1992). The situation is slowly changing, however. While SLA research has begun to influence individuals educational decision-makers of a few of these societies — a trend that can be expected to grow in the coming years - the linguistic rights of minority groups are under ever more severe attack in some countries, with the situation in present-day Arizona being a particularly dire case (Long & Adamson, in press). Intellectual curiosity SLA presents numerous fascinating puzzles, many of which are being discussed by Bley-Vroman (1990) in his paper on the "logical problem of foreign language learning". Why is it, for example, that all L1A children are successful, and on the face of it, effortlessly so, whereas SLA is almost all (many would say all) adults ends in partial failure? SLA is attempted by people of high intelligence, clear motivation, sample opportunity to acquire, and also with what would be the distinct advantage of having at least one language, the native tongue, successfully already? Transfer of training would be predict comparable success with a similar task, SLA. This and other mysteries attract some SLA scholars, much like mountains attract some climbers, "because they are there". Unlike the puzzles to be found in newspapers and airport kiosks, however, once solved, problems in SLA will tell us something about the human mind. Problems in SLA Research dates from the mid-1960s. The vast majority of work Page 6 Current Trends in SLA Research and Directions for Future Development has been completed 140 since 1980, in fact. SLA is a young science, in other words, even by the standards of social sciences. The field's immaturity is visible in a number of ways. At a fundamental level, disagreements exist as to its proper scope. At one extreme, for many researchers (see, eg, Gregg, 1996, 2003; Schwartz, 1998, 1999; White, 2003), the appropriate focus is fairly narrowly constrained by linguistic theory, in particular, the the property theory of innate linguistic competence defined in the work of Noam Chomsky and his followers. At the other extreme, it is argued that acquisition occurs through

language use and the functioning of a processor, not an innate language acquisition device (eg, O'Grady, 2005; Ellis, 2011). In the broad center, one finds the majority of active SLA researchers, the most operating within (non-generative) cognitive framework of some kind (see, eg, DeKeyser, 2006; Doughty & Long, 2003; Gass & Mackey, 2011; Long, 2011; Ritchie & Bhatia, 1996; Robinson, 2003), and working on such issues as implicit and explicit learning (DeKeyser, 2003; Ellis, 1994; Williams, 2009), incidental and intentional learning (Hulstijn, 2003), automatization (Segalowitz, 2003), developmental sequences (Pica, 1983), variation in interlanguage development (Romaine, 2003), input and interaction (Gass, 1997), language processing (Jiang, 2004; Gor & Cook, 2010; Pienemann, 1998), negative feedback (Chaudron, 1977), fossilization (Han & Odlin, 2006; Lardiere, 1998; Long, 2003), age effects (Hyltenstam & Abrahamsson, 2003; Abrahamsson & Hyltenstam, 2009; Granena & Long, 2011), language aptitude (Abrahamsson & Hyltenstam, 2008; Doughty, 2002; Granena, 2012; Skehan, 2012), attention and memory (Robinson, 2003), and other individual difference variables (Robinson, 1992). Disagreements over the scope of the scope and related methodological issues have led to fragmentation during the past two decades, with separate conferences and journals forming a school of thought, and a growing tendency for researchers with some orientations simply to ignore work carried out within a different framework. Not unrelated to these developments, and another indication of immaturity, is theory proliferation. By some counts, there are as many as 40-60 "theories" of SLA, or at least, theories in SLA (for recent surveys, see Long, 2007a; Mitchell & Miles, 1998; VanPatten & Williams, 2007). Like postmodernists Lantolf (1996, 2002) welcome this state of affairs, since, as relativists, in their view, there is no objective reality, no facts of the matter; all knowledge is socially constructed, theories are just metaphors, no theory is better than others, and more theories generate more research. 1 Each of these assertions has been challenged (see, eg, Gregg, 2000, 2002; Jordan, 2004; Long, 1997, 2007b), and certainly do not reflect the views of the majority of those who actually do SLA research. Most SLA researchers, like scientists everywhere, are rationalists of one kind or another, not relativists, and from that perspective, proliferation theory is one of the chief obstacles to progress (see, eg, Beretta, 1991; Gregg, 1993, 2000, 2002; Gregg, Long, Jordan & Beretta, 1997; Long, 1993, 2007c). Theories of embody the field's interim understandings of how second languages are learned and why they are often not. Identifying flawed theories constitutes progress, therefore, whereas a multiplicity of theories, especially oppositional ones, including those with known weaknesses, obstructs progress. Decades of work in history and philosophy have provided numerous potential criteria for evaluation of (SLA) theories, in absolute .terms or comparatively Page 7 Michael H. L ONG They include internal consistency, non-tautologousness, systematicity, 141 modularity, clarity, explanatory adequacy, predictive adequacy, scope, generality, lack of ad hocness, extendability, fruitfulness, consistency with accepted theories in other fields, experimental testability, ability to make quantitative predictions, simplicity, falsifiability, fertility as a paradigm for puzzle-solving, explanatory power, ability to account for different kinds data, ability to account for phenomena different from those for which the theory was invented to explain, predictive successes novel, ability to account for data a rival theory cannot handle, simplicity / parsimony, consistency, generality, empirical adequacy, proven fertility, unproven fertility / generative potential, continuity / rationality, a pragmatic ('get on with things') relationship with experimentation, and fundamental conceptual ability to resolve difficulties. For explanations of the criteria, sample applications, and evaluation, see Darden (1991), Laudan (1990), Laudan & Laudan (1989), and Long (1993). An

alternative approach to the problem of the theory of proliferation can be found in the work of the American philosopher of science Larry Laudan (see, eg, Laudan, 1977, 1996; Laudan & Laudan, 1989; Long, 2007c; Riggs, 1992). Laudan's concept of research tradition offers a way of seeing trees with respect to multiple theories in any field, and putting some order into the picture. 2 Research traditions, a technical term in his theory of change theory, groups together theories with a shared ontology, and agreed-upon methodological ground rules. Theories (research) traditions are not directly testable; they can survive the demise of one of their particular subordinate theories. To take an easy example, while oppositional, the Weak Continuity / Minimum Trees and Full Transfer / Full Access positions are properly viewed as theories in the same generative research tradition . Vainikka, Young-Scholten, Eubank, Schwartz, Sprouse, Lardiere, Hawkins, White, and others are involved in the "access" debate agree on the existence of an innate language faculty and on its approximate contents (in children), on the underlying linguistic competence as the proper domain of inquiry, on acceptable research methods, eg, the use of grammatical judgment tests, and the standards to be met by their analysis. They play, that is, by the same rules. Perhaps less obviously, Krashen's, Long's, and Swain's Input, Interaction, and Output Hypotheses are arguably belong to the same research tradition, Schuman's Acculturation Model (Schuman, 1986) and Gardner's The SocioEducational Model (Gardner, 1988) to another Social-Psychological tradition, work by Huebner (1983), Sato (1990), Tomlin (1990) and others to a Functionalist tradition, and so on. Laudan's "problem solving" is a useful yardstick when it comes to the comparative evaluation of theories and approach to measuring scientific progress (see, eg, Laudan, 1977). In Laudan's view, ... the aim of science is to secure theories with high problem solving effectiveness. From this perspective, just success case science progresses theories solve more problems than theirs predecessors. (Laudan, 1996: 78) There are two kinds of problems (Laudan, 1996: 79), empirical and conceptual. Empirical problems include (a) potential problems - accepted as facts about the world for Page 8 Current Trends in SLA Research and Directions for Future Development which there is as yet no 142 explanation, (b) solved, or actual, problems-claimed facts about the world which has been explained by one or more theories, and (c) anomalous problems - problems are solved by rival theories, but not by the theory in question. 3 (Note that potential or unsolved problems need not be anomalies by this analysis.) Conceptual problems include (a) internal inconsistency or ambiguous theoretical mechanisms, (b) assumptions made that run counter to other theories, prevailing metaphysical assumptions, or widely accepted epistemology and methodology, (c) violation by a theory of research tradition of which it is part, and (d) failure by a theory to utilize concepts from more general theories to which it should be logically subordinated. A theory, Laudan says, achieves solutions to empirical problems, or solves a problem, when it entails a statement of the problem, and to conceptual problems when it avoids a conceptual difficulty of its predecessor. Many different theories have solved the same empirical or conceptual problem, so a theory is worth going to depend on, among other things, on how many, and the importance, or weight , of, problems it solves. Potential empirical problems for minimally adequate theory of SLA include widely accepted findings, or problems — salient facts about SLA the theory needs to explain. Researchers may disagree over just how widely accepted some SLA findings really are, but by the way of illustration, most would accept the following two examples (see Bley-Vroman, 1990; Long, 1990a, Spolsky, 1989, for many others). 1. Age differences . Older starters out of younger ones in the early stages of the the acquisition of morphology and syntax (a rate advantage), but the ultimate exhibit is inferior

attainment. Sensitivity from birth to age six, vanishingly few achieving native-like abilities in any linguistic domain if first exposure comes later than age 12 for phonology, lexis and collocations, and the mid-teens for morphology and syntax (for data and reviews of findings, see Abrahamsson & Hyltenstam, 2009; DeKeyser, 2012; DeKeyser & Larson-Hall, 2005; Granena & Long, 2011; Hyltenstam & Abrahamsson, 2003; Long, 1990b; Newport, 2002). What accounts for these and other well attested ages differences in SLA? 2. Autonomous syntax . Interlanguages exhibit features with no obvious source in either the L1 or the L2. Obvious examples include well-documented common developmental sequences in the acquisition of L2 structures (English negation, German word order, etc.), regardless of learners' age, L1, or (classroom, naturalistic, or mixed) acquisition context (Ortega, 2009). Some interlingual structures in those sequences, eg, pre-verbal negation in the L2 Swedish of L1 speakers of Turkish (Hyltenstam, 1978), are difficult to explain, since both source and target language have post-verbal negation. Another case is the use of pronominal copies in L2 Swedish (Hyltenstam, 1984) and English (Pavesi, 1986) by native speakers of languages, eg, Italian, which, like Swedish and English, disallow them. What mechanisms, language-specific or general cognitive systems, and / or characteristics of the the linguistic environment underlie these and other widely attested patterns in interlanguage development, especially those not easily explained as a product of L1 transfer or L2 input: common errors and error types, accuracy orders, gradual developmental sequences approximation (cf. sudden, categorical learning), stabilization, and fossilization? 4 The proposal is a theory that should be evaluated comparatively in terms of Page 9 Michael H. L ONG the number and importance of problems like these that they solve. Judgment 143 is needed with respect to such matters as the weight to be ascribed to problems, whether to count some phenomena as single problems or early in the process of related ones the development of a problem-solving criterion, but there is little doubt that the Laud's approach holds considerable promise for the field of SLA, and perhaps for other areas of cognitive science. Current and future research directions If one compares the coverage of the major SLA textbooks and handbooks, it quickly become obvious, the most interesting and salient problems in the field, and, perhaps a slightly lesser extent, the appropriate research methods with which to address them. While not exhaustive list, I believe most experts accept the following issues in SLA, and believe they are, therefore, the most likely foci of future research programs: the age differences and potential biological constraints on (second) language acquisition; the existence, scope and limits on availability of innate linguistic knowledge; language universals and cross-linguistic influence; processes in interlanguage development; the role of implicit and explicit learning; the relative importance of positive and negative evidence and variation in the linguistics environment; individual differences in factors as language aptitude, memory, attention, and executive control; and the relative importance of cognitive trait variables, and affective state variables, eg, intelligence and language aptitude, and attitude and motivation, respectively. I also believe far more attention will be paid, and needs to be paid, to comparative theory evaluation. Not one of the items on the list is a new issue or research topic. Where innovation is more likely to be a problem in research methods employed to address them. Eye-tracking include examples, brain imaging, measures imported from L1 psychology and psycholinguistics, and new L2 measures, eg, of language aptitude, that takes into account the last 40 years of research findings in SLA and cognitive science. To illustrate, while research on corrective recasts has been appearing in the literature for about 20 years, it has relied on behavioral data, ie, records of speech of writing. It is only recently (2009) method tracking method has been applied to

the problem, and the results of the first two studies, impressive enough in themselves, show what a methodological innovation can contribute to existing research programs. O'Rourke (2008) conducted eye-tracker research on computer-mediated conversation that provided behavioral evidence of learner focus on form and noticing leading to uptake. Gaze and keystroke data showed a student briefly interrupting her focus on communication to information contained in information, often involving Her reading and re-reading her native interlocutor responses, comparing the input with her :own output, and then incorporating the information in her subsequent output. O'Rourke writes Page 10 Current Trends in SLA Research and Directions for Future Development The gaze data show that 144 is just prior to this correction she re-reads Steffi's "Mihr geht es gut", the start of the most recent line in the output pane, then fixates on the word "Ich" in her own draft ("Ich geht mer gut"), and then implements the change. [More examples are described.] We can thus confirm with near certainty what we can only conjecture from the output logs: that Ciara does indeed take Steffi's implicit recast ... these gaze data also points to focus on form on occasion when none of the other data sources give us any strong reason to suspect it. (O'Rourke, 2008: 246) In a second eye-tracker study, Smith (2010) evaluated 12 ESL learners' eye movements for the duration of eye fixation on their delivery by a native speaker during task-based SCMC (synchronic computer mediated communication). Smith's results showed that there were not 60% of intensive recasts they received, with Lexical recommendations are much easier than grammatical recasts for students to notice, retain, produce more accurately on a written posttest, and use more productively in subsequent chat interaction. Successful uptake of following recides was relatively rare. Like O'Rourke, Smith notes that, coupled with the had shown learners' data tracker, attend to a substantial proportion of the recasts, his results suggest that overt uptake, as measured by behavioral data, i.e., audible or visible immediate improved production, may tend to underestimate the positive effect of recasts on acquisition, as suggested by previous researchers (see, eg, Li, 2010; Mackey, 1999) who have produced evidence of recasts on delayed, but not immediate post-tests. I fully expect work on other long-standing issues to be equally enhanced by such innovations and also by the advent of new, more sophisticated and sensitive instrumentation. An example of the latter is the thus-far sevenyear study at the University of Maryland (Doughty, to appear; Doughty, Bunting, Campbell, Bowles & Haarmann, 2007) designed to develop a new test of language aptitude, and in particular, aptitude for achieving advanced proficiency levels on the ILR scale in what for native speakers of English are notoriously difficult languages for adult starters, such as Arabic and Chinese. Another is the use of measures imported from L1 psycholinguistics for use in SLA research, as was the case with a fouryear, federally funded study of “Linguistic correlates of proficiency” (Long, Gor & Jackson, 2012). In addition to traditional measures, such as elicited imitation, translation, grammaticality and acceptability judgment, AXB discrimination, multiple-choice and picture-matching, use of such measures as lexical decision with priming, accent detection, speech in noise (SPIN), and moving window, made it possible for us to scrutinize the fine detail of what learners at advanced levels can and cannot do in (what in the USA are) less commonly taught languages (LCTLs). As a result of that work, curriculum designers and teachers who are given groups of adult learners of Russian, informed that they are “level 1”, “level 1+”, “level 2”, etc., on the ILR scale, and that they have X weeks to move them to “level 2+” or “level 3”, now have a concrete idea of which features in both reception and production of the L2 phonology, morphology, syntax, lexis and collocations are known by their

students, with approximately what degree of control, and which additional ones need to be .mastered to achieve the new mandated proficiency level Page 11 Michael H. L ONG SLA and cognitive science To conclude, still in its infancy as a field of scientific 145 inquiry, SLA has yet to resolve several basic issues. Prominent among them, disputes continue over the appropriate scope of research, and over epistemology and methodology, and the field suffers from theory proliferation. Those problems notwithstanding, the majority of researchers are engaged in productive work of increasing methodological rigor, most operating within a broadly cognitive, psycholinguistic framework. Moreover, as shown by the frequency of peer- reviewed publications of empirical research on certain topics (maturational constraints, implicit and explicit learning, processes in interlanguage development, negative feedback, individual differences, input frequency, etc.), there is evidence of a consensus as to which the important issues are. Those issues are likely to remain the focus of research programs for the foreseeable future, but with the research effort improved by methodological innovations of various kinds. Like cognitive science, of which it is a part, SLA is a field whose unifying focus is its principal object of inquiry: the cognitive mind. Most SLA researchers accept that the study of cognitive phenomena involves use of the notions of representation and computation, and also that successful research will require interdisciplinary collaboration. In this sense, SLA and cognitive science exhibit many of the same characteristics: youth, interdisciplinarity, and theoretical and methodological diversity, on the one hand, and on the other, a clear focus on cognition, the excitement and satisfaction that comes with scientific discovery, and steady progress on issues of intellectual and social importance. Notes 1. One might be forgiven for wondering why postmodernists would be interested in research if there are no facts of the matter. 2. For discussion of Laudan's notion of “research tradition”, see Gholson & Barker (1985); Riggs (1992), pp. 109-19. 3. Laudan's use of “anomaly” constitutes a departure from the term's traditional meaning in the philosophy of science as a problematic fact or result for which a theory cannot account. 4. While neither a conceptually very coherent, nor empirically well supported, phenomenon, in my judgment (see Long, 2003), fossilization is widely accepted as real within the field (see, eg, papers in Han & Odlin, 2006). References Abrahamsson, N. & Hyltenstam, K. 2009. Age of onset and nativelikeness in a second language: Listener perception versus linguistic scrutiny. Language Learning , 59, 249-306. Albert, M. & Obler, L. (eds.) 1978. The Bilingual Brain: Neuropshychological and Neurolinguistic Aspects of Bilingualism . New York: Academic Press. Berent, GP 1996. The acquisition of English syntax by deaf learners. In W. Ritchie & TK Bhatia Page 12 Current Trends in SLA Research and Directions for Future Development (eds.), Handbook of 146 Second Language Acquisition , 469-507. San Diego: Academic Press. Beretta, A. 1991. Theory construction in SLA: Complementarity and opposition. Studies in Second Language Acquisition, 13(4), 493-511. Beretta, A. 2009. The language-learning brain. In MH Long & CJ Doughty (eds.), Handbook of Language Teaching , 65-80. Oxford: Wiley-Blackwell. Bley-Vroman, R. 1990. The logical problem of foreign language learning. Linguistic Analysis, 20(1-2), 3-49. Chambers, JK 1992. Dialect acquisition. Language , 68(4), 673-705. Chaudron, C. 1977. A descriptive model of discourse in the corrective treatment of learners' errors. Language Learning , 27(1), 29-46. Culp, RE, Watkins, RV, Lawrence, H., Letts, D., Kelly, DJ & Rice, ML 1991. Maltreated children's language and speech development:

Abused, neglected, and abused and neglected. First Language , 11, 377-89. Cummins, J. 1984. Bilingualism and Special Education: Issues in Assessment and Pedagogy . Clevedon, Avon: Multilingual Matters. Cummins, J. 2009. Bilingual and immersion programs. In MH Long & CJ Doughty (eds.), Handbook of Language Teaching , 161-181. Oxford: Wiley-Blackwell. Curtiss, S. 1980. The critical period and feral children. UCLA Working Papers in Cognitive Linguistics , 2, 21-36. Curtiss, S. 1988. Abnormal language acquisition and the modularity of language. In FJ Newmeyer (ed.), Linguistics: The Cambridge Survey. Volume II. Linguistic Theory: Extensions and Implications , 96-116. Cambridge: Cambridge University Press. Darden, L. 1991. Theory Change in Science: Strategies from Mendelian Genetics . New York: Oxford University Press. DeKeyser, RM 2000. The robustness of critical period effects in second language acquisition. Studies in Second Language Acquisition , 22, 4, 499-533. DeKeyser, RM 2003. Implicit and explicit learning. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 313-48. Oxford: Blackwell. DeKeyser, RM (ed.) 2006. Practicing in a Second Languag: Perspectives from Applied Linguistics and Cognitive Psychology . Cambridge: Cambridge University Press. DeKeyser, RM 2012. Age effects in second language learning. In SM Gass & A. Mackey (eds.), Handbook of Second Language Acquisition , 442-460. London: Routledge/Taylor Francis. DeKeyser, RM & Larson-Hall, J. 2005. What does the critical period really mean? In JJ Kroll & A. MB de Groot (eds.), Handbook of Bilingualism: Psycholinguistic Approaches . Oxford: Oxford University Press. Doughty, CJ 1991. Second language instruction does make a difference: Evidence from an empirical study of SL relativization. Studies in Second Language Acquisition , 13(4), 431-69. Doughty, CJ 2003. Instructed SLA: Constraints, compensation, and enhancement. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 256-310. Oxford: Blackwell. Doughty, CJ (To appear). Optimizing post-critical-period language learning. In G. Granena & M. H. Long (eds.), Sensitive Periods, Language Aptitude, and Ultimate L2 Attainment . .Amsterdam: John Benjamins Page 13 Michael H. L ONG Doughty, C., Bunting, M., Campbell, S., Bowles, A. & Haarmann, H. 2007. 147 Development of the High- level Language Aptitude Battery . Technical Report: Center for Advanced Study of Language. University of Maryland: College Park, MD. Doughty, CJ & Long, MH 2003. Optimal psycholinguistic environments for distance foreign language learning. Language Learning and Technology , 7(3), 50-80. Doughty, CJ & Long, MH (eds.) 2003. Handbook of Second Language Acquisition . Oxford: Blackwell. Doughty, CJ & Williams, J. (eds.) 1998. Focus on form in Classroom Second Language Acquisition . Cambridge: Cambridge University Press. Eckman, F., Bell, L. & Nelson, D. 1988. On the generalization of relative clause instruction in the acquisition of English as a second language. Applied Linguistics , 9(1), 1-11. Ellis, NC (ed.) 1994. Implicit and Explicit Learning of Languages . London: Academic Press. Ellis, NC 2005. At the interface: Dynamic interactions of explicit and implicit language knowledge. Studies in Second Language Acquisition , 27, 305-52. Ellis, NC 2011. The emergence of language as a complex adaptive system. In J. Simpson (ed.), Handbook of Applied Linguistics, 666-679. London: Routledge/Taylor Francis. Gardner, R. 1988. The Socio-Educational Model of second language learning: Assumptions, findings, and issues. Language Learning, 38(1), 101-126. Gass, SM 1982. From theory to practice. In M. Hines & W. Rutherford (eds.), On TESOL ' 81 , 129- 39. Washington, DC: TESOL. Gass, SM 1997. Input, Interaction, and the Second Language Learner . Mahwah, NJ: Lawrence Erlbaum Associates. Gass, SM & Mackey, A. (eds.) 2012. Handbook of Second Language Acquisition . London: Routledge/ Taylor Francis. Gholson, B. & Barker, P. 1985. Kuhn, Lakatos, and Laudan. Applications to the history of physics and psychology. American

Psychologist , 40(7), 755-69. Gor, K. & Cook, S. 2010. Non-native processing of verbal morphology: In search of regularity. Language Learning , 60(1), 88-126. Granena, G. 2012. Age differences and cognitive aptitudes in ultimate second language attainment. Ph.D. dissertation, University of Maryland. Granena, G. & Long, MH 2011. Age of onset, length of residence, language aptitude, and ultimate L2 attainment in three linguistic domains. Ms. University of Maryland. Granena, G. & Long, MH (eds.) (To appear). Sensitive Periods, Language Aptitude, and Ultimate L2 Attainment . Amsterdam: John Benjamins. Gregg, K. 1993. Taking explanation seriously; or, let a couple of flowers bloom. Applied Linguistics, 14(3), 276-94. Gregg, K. 1996. The logical and developmental problems of second language acquisition. In WC Ritchie & TK Bhatia (eds.), Handbook of Second Language Acquisition , 49-81. San Diego: Academic Press. Gregg, K. 2000. A theory for every occasion: Postmodernism and SLA. Second Language Research , 16(4), 343-59. Gregg, KR 2002 A garden ripe .for weeding: A reply to Lantolf. Second Language Research , 18(1), 79-81 Page 14 Current Trends in SLA Research and Directions for Future Development Gregg, K. 2003. SLA 148 theory: construction and assessment. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 831-65. Oxford: Blackwell. Gregg, KR, Long, MH, Jordan, G. & Beretta, A. 1997. Rationality and its discontents in SLA. Applied Linguistics , 18(4), 539-59. Han, Z. & Odlin, T. (eds.). 2006. Studies of Fossilization in Second Language Acquisition . Clevedon: Multilingual Matters. Hatch, EM 1978. Introduction. In EM Hatch (ed.), Second Language Acquisition: A Book of Readings , 1-18. Rowley, MA: Newbury House. Huebner, T. 1983. Linguistic systems and linguistic change in an interlanguage. Studies in Second Language Acquisition , 6(1), 33-53. Hulstijn, JH 2003. Incidental and intentional learning. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 349-81. Oxford: Blackwell. Hyltenstam, K. 1977. Implicational patterns in interlanguage syntax variation. Language Learning, 27(2), 383-411. Hyltenstam, K. 1984. The use of typological markedness conditions as predictors in second language acquisition: The case of pronominal copies in relative clauses. In RW Andersen (ed.), Second Languages: A Cross-linguistic Perspective , 39-58. Rowley, MA: Newbury House. Hyltenstam, K. & Abrahamsson, N. 2003. Maturational constraints in second language acquisition. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 539-88. Oxford: Blackwell. Jacobs, B. 1988. Neurobiological differentiation of primary and secondary language acquisition. Studies in Second Language Acquisition , 10(3), 303-37. Jacobs, B. & Schumann, J. 1992. Language acquisition and the neurosciences: Towards a more integrative perspective. Applied Linguistics , 13(3), 282-301. Jiang, N. 2004. Morphological insensitivity in second language processing. Applied Psycholinguistics, 25, 603-634. Jordan, G. 2004. Theory Construction in Second Language Acquisition . Amsterdam and Philadelphia: John Benjamins. Keenan, E. & Comrie, B. 1976. Noun phrase accessibility and Universal Grammar. Linguistic Inquiry, 8, 63-99. Kellerman, E. & Sharwood-Smith, M. (eds.) 1986. Cross-linguistic Influence in Second Language Acquisition . New York: Pergamon. Kroll, JF & Sunderman, G. 2003. Cognitive processes in second language learners and bilinguals: The development of lexical and conceptual representations. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 104-29. Oxford: Blackwell. Lantolf, JP 1996. SLA theory building: “Letting all the flowers bloom!” Language Learning , 46(4), 713-49. Lantolf, J. 2002) Commentary from the flower garden: Responding to Gregg, 2000. Second Language Research , 18(1), 72-78. Lardiere, D. 1998. Case and tense in the “fossilized ” steady state. Second Language Research, 14, 1-26. Laudan, L. 1977. Progress and Its Problems: Towards a Theory of Scientific

Growth . Berkeley and Los Angeles: University of California Press. Laudan, L. 1990. Science and . Relativism: Some Key Controversies in the Philosophy of Science Page 15 Michael H. L ONG Chicago: University of Chicago Press. Laudan, L. 1996. Beyond Positivism and 149 Relativism. Theory, Method, and Evidence . Boulder, CO: Westview. Laudan, L. & Laudan, R. 1989. Dominance and disunity of method: Solving the problems of innovation and consensus. Philosophy of Science , 56, 221-37. Li, S. 2010. The effectiveness of corrective feedback in SLA: A meta-analysis. Language Learning , 60(2), 309-365. Lightbown, PM & Spada, N. 1993. How Languages Are Learned . Oxford: Oxford University Press. Long, MH 1985. A role for instruction in second language acquisition: Task-based language teaching. In K. Hyltenstam & M. Pienemann (eds.), Modeling and Assessing Second Language Development , 77-99. Clevedon, England: Multilingual Matters. Long, MH 1990a. The least a second language acquisition theory needs to explain. TESOL Quarterly , 24, 649-66. Long, MH 1990b. Maturational constraints on language development. Studies in Second Language Acquisition , 12, 251-285. Long, MH 1993. Assessment strategies for second language acquisition theories. Applied Linguistics, 14(3), 225-49. Long, MH 1997. Construct validity in SLA research: A reply to Firth and Wagner. Modern Language Journal, 81, 318-23. Long, MH 2003. Stabilization and fossilization in interlanguage development. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 487-535. Oxford: Blackwell. Long, MH 2005. Problems with supposed counter-evidence to the Critical Period Hypothesis. International Review of Applied Linguistics, 43(4), 287-317. Long, MH 2007a. Recasts in SLA: The story so far. In MH Long, Problems in SLA , 75-116. Mahwah, NJ: Lawrence Erlbaum Associates. Long, MH 2007b. Second language acquisition theories. In MH Long, Problems in SLA , 3-20. Mahwah, NJ: Lawrence Erlbaum Associates. Long, MH 2007c. Problem solving and theory change in SLA. In MH Long, Problems in SLA , 21-40. Mahwah, NJ: Lawrence Earlbaum. Long, MH 2007d. SLA: Breaking the siege. In MH Long, Problems in SLA , 139-68. Mahwah, NJ: Lawrence Earlbaum. Long, MH 2011. Second language acquisition. In PC Hogan (ed.), The Cambridge Encyclopedia of the Language Sciences , 728-31. Cambridge: Cambridge University Press. Long, MH (To appear). Second Language Acquisition and Task-based Language Teaching . Oxford: Wiley-Blackwell. Long, MH & Adamson, D. (In press). SLA Research and Arizona's Structured English Immersion Policies. In G. Valdez & C. Faltis (eds.), Implementing English Language Learning Policy in Arizona: An Examination of Legal, Historical and Current Practices of SEI . Clevedon, Avon: Multilingual Matters. Long, MH & Crookes, G. 1992. Three approaches to taskbased language teaching. TESOL Quarterly, 26(1), 27-56. Long, MH & Doughty, CJ (eds.) (2009). .Handbook of Language Teaching . Oxford: Wiley- Blackwell Page 16 Current Trends in SLA Research and Directions for Future Development Long, MH, Gor, K. & 150 Jackson, S. 2012. Linguistic correlates of proficiency: Proof of concept with L2 Russian. Studies in Second Language Acquisition, 34, 1. Long, MH & Norris, JM 2000. Task-based teaching and assessment. In M. Byram (ed.), Encyclopedia of Language Teaching , 597-603. London: Routledge. Long, MH & Robinson, P. 1998. Focus on form: Theory, research, and practice. In C. Doughty & J. Williams (eds.), Focus on Form in Classroom Second Language Acquisition , 15-41. Cambridge: Cambridge University Press. Mackey, A. & Goo, J. 2007. Interaction research in SLA: A meta-analysis and research synthesis. In A. Mackey (ed.), Conversational Interaction in Second Language

Acquisition , 407-52. Oxford: Oxford University Press. Malcolm, IM 1994. Aboriginal English inside and outside the classroom. Australian Review of Applied Linguistics , 17(1), 147-80. Mayberry, R. 1993. First-language acquisition after childhood differs from second-language acquisition: The case of American Sign Language. Journal of Speech and Hearing Research , 36, 1258-70. Mitchell, R. & Myles, F. 1998. Second Language Learning Theories . London: Arnold. Newport, EL 1990. Maturational constraints on language learning. Cognitive Science , 14(1), 11-28. Newport, EL 2002. Critical periods in language development. In L. Nadel (ed.), Encyclopedia of Cognitive Science . London: Macmillan Publishers Ltd./Nature Publishing Group. Norris, J. & Ortega, L. 2000. Effectiveness of L2 instruction: A research synthesis and quantitative meta-analysis. Language Learning , 50(3), 417-528. Odlin, T. 1989. Language Transfer. Cross-linguistic Influence in Language Learning . Cambridge: Cambridge University Press. Odlin, T. 2003. Cross-linguistic influence. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 436-86. Oxford: Blackwell. O'Grady, W. 1996. Language acquisition without Universal Grammar: A general nativist proposal for L2 learning. Second Language Research , 12(4), 374-397. O'Grady, W. 2003. The radical middle: Nativism without Universal Grammar. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 43-62. Oxford: Blackwell. O ' Grady, W. 2005 . Syntactic Carpentry: An Emergentist Approach to Syntax. Mahwah, NJ: Erlbaum. O'Grady, W., Lee, M. & Kwak, H.-Y. 2009. Emergentism and second language acquisition. In WC Ritchie & TJ Bhatia (eds.), New Handbook of Second Language Acquisition , 69-88. Bingley: Emerald Press. Ortega, L. 2009. Sequences and processes in language learning. In MH Long & CJ Doughty (eds.), Handbook of Language Teaching , 81-105. Oxford: Wiley-Blackwell. Oyama, S. 1976. A sensitive period for the acquisition of a nonnative phonological system. Journal of Psycholinguistic Research , 5(3), 261-83. Paradis, M. 2004. A Neurolinguistic Theory of Bilingualism . Amsterdam/Philadelphia: John Benjamins. Pavesi, M. 1986. Markedness, discoursal modes, and relative clause formation in a formal and an informal context. Studies in Second Language Acquisition , 8(1), 38-55. Phillipson, R. & Skutnabb-Kangas, T. 2009. The politics of language teaching. In MH Long & CJ Doughty (eds.), Handbook of Language Teaching , 27.41. Oxford: Wiley-Blackwell Page 17 Michael H. L ONG Pica, T. 1983. Adult acquisition of English as a second language under different 151 conditions of exposure. Language Learning, 33(4), 465-97. Pienemann, M. 1984. Psychological constraints on the teachability of languages. Studies in Second Language Acquisition, 6(2), 186-214. Pienemann, M. 1998. Language Processing and Second Language Development. Processability Theory . Amsterdam/New York: John Benjamins. Riggs, PJ 1992. Laudan's theory of evolving research traditions. In PD Riggs, Whys and Ways of Science. Introducing Philosophical and Sociological Theories of Science , 95-123. Carlton, Victoria: Melbourne University Press. Ritchie, WR & Bhatia, TK (eds.) 1996. Handbook of Second Language Acquisition . San Diego: Academic Press. Robinson, P. (ed.) 2001. Cognition and Second Language Instruction . Cambridge: Cambridge University Press. Robinson, P. (ed.) 2002. Individual Differences and Instructed Language Learning. Amsterdam: John Benjamins. Robinson, P. 2003. The cognition hypothesis, task design and adult task-based language learning. Second Language Studies, 21(2), 45-107. Robinson, P. 2009. Syllabus design. In MH Long & CJ Doughty (eds.), Handbook of Language Teaching , 294-310. Oxford: Wiley-Blackwell. Romaine, S. 2003. Variation. In C. Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 409-35. Oxford: Blackwell. Sachs, J., Bard, B. & Johnson, M. 1981. Language learning with restricted input: case studies of two hearing children of deaf parents. Applied Psycholinguistics, 2(1), 33-54. Sato, CJ

1985. Linguistic inequality in Hawai'i: The post-creole dilemma. In N. Wolfson & J. Manes (eds.), Language of Inequality , 255-72. Berlin: Mouton. Sato, CJ 1989. A nonstandard approach to Standard English. TESOL Quarterly , 23(2), 259-82. Sato, CJ 1990. The Syntax of Conversation in Interlanguage Development. Tubingen: Gunter Narr. Schachter, J. 1990. On the issue of completeness in second language acquisition. Second Language Research , 6(2), 93-124. Schumann, JH 1986. Research on the acculturation model for second language acquisition. Journal of Multilingual and Multiculutural Development, 7, 379-92. Schumann, JH 1998. The Neurobiology of Affect in Language . Language Learning, 48, Supplement 1. Schumann, JH, Crowell, SE, Jones, NE, Lee, N., Schuchert, SA & Wood, LA (2004). The Neurobiology of Learning. Perspectives from Second Language Acquisition . Mahwah, NJ: Lawrence Erlbaum Associates. Schwartz, BD 1998. The second language instinct. Lingua, 106, 133-60. Schwartz, BD 1999. Let's make up your mind: “special nativist” perspectives on language, modularity of mind, and nonnative language acquisition. Studies in Second Language Acquisition , 21, 635-55. Schwartz, B. & Gubla-Ryzak, M. 1992. Learnability and grammar reorganization in L2A: Against negative evidence causing the unlearning of verb movement. Second Language Research , 8(1), 1-38. Segalowitz, N. (2003). Automaticity and SLA. In CJ Doughty & MH Long (eds.), Handbook of Page 18 Current Trends in SLA Research and Directions for Future Development Second Language 152 Acquisition , 382-408. Oxford: Blackwell. Siegel, J. 1999. Creole and minority dialects in education: An overview. Journal of Multilingual and Multicultural Development, 20, 508-31. Siegel, J. 2003. Social context. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 178-223. Oxford: Blackwell. Skehan, P. 2001. Tasks and language performance assessment. In M. Bygate, P. Skehan & M. Swain (eds.), Researching Pedagogic Tasks: Second Language Learning, Teaching and Testing , 167-85. Harlow: Longman. Skehan, P. 2012. Language aptitude. In SM Gass & A. Mackey (eds.), Handbook of Second Language Acquisition , 381-395. London: Routledge/Taylor Francis. Skutnabb-Kangas, T. 2000. Linguistic Genocide in Education—Or Worldwide Diversity and Human Rights ? Mahwah, NJ: Erlbaum. Spolsky, B. 1989. Conditions for Second Language Learning . Oxford: Oxford University Press. Strong, M. (ed.) 1988. Language Learning and Deafness . Cambridge: Cambridge University Press. Tomlin, R. 1990. Functionalism in second language acquisition. Studies in Second Language Acquisition , 12(2), 155-77. VanPatten, B. & Williams, J. (eds.) 2007. Theories in Second Language Acquisition: An Introduction . Lawrence Erlbaum. Watson-Gegeo, KA 1992. Thick explanation in the ethnographic study of child socialization: A longitudinal study of the problem of schooling for Kwara`ae (Solomon Islands) children. In W. Corsaro & PJ Miller (eds.), Interpretative Approaches to Children ' s Socialization , 51-66. San Francisco: Jossey-Bass. Watson-Gegeo, KA & Gegeo, DW 1995. Understanding language and power in the Soloman Islands: Methodological lessons for educational intervention. In J. Tollefson (ed.), Power and Inequality in Language Education , 59-72. Cambridge: Cambridge University Press. White, L. 1991. The verb-movement parameter in second language acquisition. Language Acquisition , 1, 337-60. White, L. 2003. On the nature of interlanguage representation: Universal Grammar in the second language. In CJ Doughty & MH Long (eds.), Handbook of Second Language Acquisition , 19- 42. Oxford: Blackwell. Williams, JN 2005. Learning without awareness. Studies in Second Language Acquisition , 27(2), 269-304. Williams, JN 2009. Implicit learning. In WC Ritchie & TK Bhatia (eds.), The New Handbook of Second Language Scquisition , 319-53. Bingley: Emerald Group Publishing. Wolfe-Quintero, K. 1996. Nativism .does not equal Universal Grammar. Second Language Research , 12(4), 335-73