Argument Structure

Considering the paramount importance of writing logical arguments for college students, this study investigated the effect of dynamic assessment (DA) of Toulmin Model through teacher- and collective-scaffolding on argument structure and overall quality of argumentative essays of Iranian EFL university learners. In so doing, 45 male and female Iranian EFL learners taking part in the study were randomly assigned into three groups (two experimental groups including the teacher- and collective-scaffolding and one control group), each consisting of 15 learners. Toulmin Model of argumentation was used as an instructional tool in this research. The necessary data were collected through a pre- and post-test argumentative essay. During the experiment, the dynamic assessment groups wrote and revised their essays in response to teacher’s or peers’ supportive dialogue and zone of proximal development (ZPD) sensitive feedback on the argument structure of their essays; whereas, the control group did not receive such mediation and they were evaluated on their own independent performance. The results of statistical analyses carried out on post-test scores on argument structure and overall quality of the essays pointed out to the outperformance of the teacher- and collective-scaffolding groups on both variables. Furthermore, follow-up Post-hoc analyses revealed no significant difference between the teacher- and collective-scaffolding groups in terms of the overall quality of the argumentative essays. However, the statistically significant difference between the two experimental groups with regard to the argument structure indicated the outperformance of the teacher-scaffolding over the collective group. The obtained results support the fact that autonomy and improvement cannot be thrust upon learners, rather they need to be assisted wisely towards independence.

This study examined the role of the native language (L1) transfer in a non-native language (L2) acquisition of the there-insertion construction at the syntax-semantics interface. Specifically, the study investigated if Mandarin EFL learners would make overgeneralization errors in the situation where an L1 argument structure constitutes a superset of its L2 counterpart. Verbs of existence and appearance (EAA) such as exist, appear are possible with the there-insertion construction in which the single argument remains in the underlying direct object position. In Mandarin, some verb classes also allow their single arguments to appear in the verb-subject (VS) order. For example, VEA and verbs of monadic change of state (COS) (die, escape) are compatible with the VS order. Some verbs of manner of motion (MOM) (run, swim) are also permissible with the construction. Seventy upper-intermediate and advanced L1 Mandarin EFL learners and 30 native English speakers participated in an acceptability judgement test, the results of which show that L1 Mandarin EFL learners acquired native-like knowledge of the there-insertion construction with verbs of EAA, but they have difficulties recognizing the unacceptability of the there-insertion sentences with verbs of COS and MOM. Individual results by subjects show that it is possible to recover from L1 transfer. Mandarin EFL learners start to unlearn the overgeneralization errors with MOM verbs by drawing on the semantic properties. The experimental results provide further evidence for the previous findings suggesting that the L2 argument structure acquisition is constrained by L1, and the recovery from L1 transfer is also possible.