(Morpho)Syntactic and Lexical Complexity in Writing Samples
Total Page:16
File Type:pdf, Size:1020Kb
Instructed isla (print) issn 2398–4155 Second Language isla (online) issn 2398–4163 Acquisition Article Structure-based or dynamic usage-based instruction : long-term effects on (morpho)syntactic and lexical complexity in writing samples Audrey Rousse-Malpat, Rasmus Steinkrauss and Marjolijn Verspoor Abstract This classroom study aims to explore the instructional effects of structure-based (SB) or dynamic usage-based (DUB) instruction with free response, commu- nicative writing tasks after three years of L2-French instruction on linguistic complexity measures in (morpho)syntax and lexicon. We investigated data from forty-three young high school beginner learners of L2-French after three years of instruction with similar amounts of L2 exposure. The SB treatment included a traditional focus on explicit grammar; the DUB group was taught using the Accelerated Integrated Method, a highly communicative, meaning- focused method without explicit instruction, but with a great deal of expo- sure and repetition to induce frequency effects. Results after three years show that DUB instruction leads to more linguistic complexity in terms of various (morpho)syntactic and some lexical measures (multi-word sequences coverage). On other lexical measures (such as Guiraud index and average word length), Affiliations Audrey Rousse-Malpat: University of Groningen, Netherlands email: [email protected] Rasmus Steinkrauss: University of Groningen, Netherlands email: [email protected] Marjolijn Verspoor: University of Groningen, Netherlands email: [email protected] isla vol 3.2 2019 181–205 doi: https://doi.org/10.1558/isla.38054 ©2019, equinox publishing 182 AUDREY ROUSSe-MALPAT, RaSMUS STEINKRAUSS AND MARJOLIJN VERSPOOR no differences were found. The results are discussed using insights from the dynamic usage-based perspective. keywords: (morpho)syntactic; lexical complexity; structure-based (SB) instruction; dynamic usage-based (DUB) instruction; L2 writing; L2 French Introduction Recent developments in the application of Complex Dynamic Systems Theory (CDST) combined with usage-based (UB) theories on second language instruction, called a dynamic usage-based (DUB) approach for short, might offer a good alternative for foreign language teachers who struggle with an implicit approach to language teaching (see Rousse- Malpat and Verspoor 2018; Verspoor 2017). Teaching methods in line with this approach do not regard language as a set of rules but as conven- tionalised routines, where non-linear learning emerges from the dynamic interaction between input and output. Rather than focusing on grammar, DUB methods focus on ‘iteration’ (Larsen-Freeman 2012), namely, fre- quently repeated exposure to utterances in meaningful contexts (Verspoor 2017) to foster automatisation and routinisation. In several semester-long experiments, these methods have proved as effective or more effective in a foreign language classroom in countries where language teaching is par- ticularly traditional, such as in Vietnam or Sri Lanka (Hong 2013; Irshad 2015), on general English proficiency tested using objective tests and holis- tic scores on written and oral texts, or in Germany for L2-Dutch (Koster 2015). However, few studies have looked at the effects of DUB-inspired L2 instruction on free-production data over a longer period of time and using both analytical and holistic measures that favour SB as well as DUB approaches and compared them to the effects of SB teaching. In this paper, the effectiveness of two L2 teaching methods – SB and DUB – will be evaluated using several (morpho)syntactic complexity mea- sures such as sentence length and morphological complexity, and lexical measures such as diversity (Guiraud), word complexity (average word length) and multi-word (MW) sequences. If anything, we would expect the SB group to outperform the DUB group on (morpho)syntactic linguistic complexity measures and the DUB group to outperform the SB group on MW sequences. After clarifying the fundamental differences between SB and DUB approaches and their implications for instructional methods, we will briefly review studies related to the current one. STRucture-bASED OR DYNAMIC USAGE-BASED INSTRUCTION 183 Structure-based versus dynamic usage-based instructional approaches The fundamental difference between an SB and a DUB approach is the way language itself is viewed. An SB approach assumes language is a complex system in which different autonomous sub-components (such as syntax and lexicon) interact predictably according to ‘rules’. In contrast, a DUB approach assumes language is a complex dynamic system in which there is no fundamental difference between syntax and lexicon, and that language is used on the basis of the speaker’s individual routines. Language learning and use is viewed as a dynamic, non-linear process. These different views have implications for how language should be presented and instructed, and the behaviour that learners should aim for (Verspoor 2017). The term ‘structure based’ (SB) is based on research by Lightbown and Spada (2013), who argue that SB approaches see language learning as rule driven. Generally, it is believed that learning and applying grammatical rules is beneficial in becoming proficient in an L2. There is a high focus on accuracy of the grammatical forms that are presented from ‘simple’ to ‘complex’, and other aspects of language such as vocabulary, formulaic phrases, pronunciation, intonation, pragmatic use and so on are believed to be learned separately. Most of our L2 teaching methods, whether they be audio-lingual, communicative, task-based or skill theory, are structure based in that they implicitly or explicitly build on the premise that grammar forms the core of the language to be learned. Such SB approaches usually rely heavily on explicit grammar teaching, especially in foreign language classes in the Netherlands (cf. West and Verspoor 2016). The term ‘dynamic usage based’ (DUB) is inspired by the title of one of Langacker’s articles (2000), in which he argues that a usage-based view is per definition a complex dynamic systems theory view. In our own use of the term, we accentuate the fact that language development is per defini- tion non-linear, that some subsystems need to be learned before others, and that variability in the use of structures (which includes making errors) is needed to progress (Verspoor 2017). A DUB perspective on L2 learning would predict that language emerges from repetitive exposure to meaning- ful input and language use (Langacker 2000; Tomasello 2003). Linguistic constructions (pairings of form and meaning) are learned through asso- ciation, as they are ‘heard and used frequently and therefore entrenched, which is the result of habit formation, routinization or automatization’ (Verspoor and Schmitt 2013:354). The key difference between an SB and a DUB view is that there is no priority for grammar or syntax in language. Language is not driven by rules. Instead, language forms – from concrete 184 AUDREY ROUSSe-MALPAT, RaSMUS STEINKRAUSS AND MARJOLIJN VERSPOOR morphemes, words, phrases, MW sequences, clauses, sentences and dis- course sequences to abstract lexical categories and morphological and syn- tactic patterns – are all fundamentally similar as they all bear meaning to different degrees and form a continuum. Because learners are expected to discover recurring patterns through frequent exposure, there is no need to explain rules and the approach is mainly implicit. Structure-based methods, with a strong explicit component, are very common in foreign language teaching as there is still a strong belief that explicit grammar instruction is a prerequisite for successful second lan- guage learning. This is not surprising, as many studies and meta-studies point to a positive effect of explicit grammar instruction (Goo et al. 2015; Norris and Ortega 2000; Spada and Tomita 2010). In addition, there have been studies on the effects of type of instruction on linguistic complexity, such as the differential effects on the acquisition of simple versus complex grammatical rules on oral and written skills (cf. Spada and Tomita 2010). These studies also conclude that there is evidence for a beneficial effect of explicit instruction on the use of both simple and complex forms. However, the effects of explicit instruction may be overestimated (e.g. Doughty 2003) because research designs often favour explicit types of instruction using proficiency measures relying on ‘constrained, con- structed responses’ (fill the blanks, metalinguistic judgement responses) (Spada 2011:228) and studying brief treatments only (Spada and Tomita 2010). The problem is that implicitly taught learners have to discover the language patterns on their own, and this process may require com- paratively more hours of exposure (Rousse-Malpat and Verspoor 2018). Therefore, studies looking at brief periods of instruction and at gram- matical complexity only might advantage explicit instructional settings. However, the question remains whether the knowledge acquired in explicit instructional settings can be transferred to learners’ communicative lan- guage use. Therefore, long-term intervention studies on type of instruction with free response tasks – eliciting uncontrolled foreign language use – are called for. The present classroom study aims to explore the instructional effects of an SB and a DUB approach, one with explicit and the other with implicit instruction, with free response, communicative writing tasks after three years