Effects of Task Complexity on the Fluency and Lexical Complexity in EFL Students' Argumentative Writing.

Abstract Based on Robinson, 2001a , Robinson, 2001b , Robinson, 2003 Cognition Hypothesis and Skehan's (1998) Limited Attentional Capacity Model, this study explored the effects of task complexity on the fluency and lexical complexity of 108 EFL students’ argumentative writing. Task complexity was manipulated using three factors: (1) availability of planning time; (2) provision of ideas and macro-structure; and (3) draft availability. All participants were randomly assigned to the above three factors in which the availability of the planning time factor had 4 levels (extended pre-task, pre-task, free-writing, and control); the provision of the ideas and macro-structure factor had 3 levels (topic, ideas, and macro-structure given; topic and ideas given; and topic given); and the draft availability factor had 2 levels (draft available vs. draft unavailable) using their writing task proficiency scores as a measure. Results showed that: (1) increasing task complexity, with respect to the planning time continuum, produced significantly greater fluency II (mean number of words produced per minute of the total time spent on the task) and lexical complexity; (2) increasing task complexity, through the provision of ideas and macro-structure, produced significantly greater lexical complexity but no effect on fluency I (mean number of words produced per minute of transcription) or fluency II; and (3) increasing task complexity, through draft availability, produced no significant differences in fluency and lexical complexity. Implications of these findings are discussed.

[1]  Rosa M. Manchón,et al.  Writing in foreign language contexts: An introduction , 2008 .

[2]  P. Robinson.  Task complexity, task difficulty, and task production: exploring interactions in a componential framework , 2001 .

[3]  Peter Skehan,et al.  7. Strategic and on-line planning: The influence of surprise information and task time on second language performance , 2005 .

[4]  C. Frith,et al.  Mapping the Mind , 1998 .

[5]  P. Skehan.  A FRAMEWORK FOR THE IMPLEMENTATION OF TASK-BASED INSTRUCTION , 1996 .

[6]  Michael H. Long.  The Role of the Linguistic Environment in Second Language Acquisition , 1996 .

[7]  P. Robinson,et al.  Task complexity, the Cognition Hypothesis and second language learning and performance , 2007 .

[8]  Peter Skehan,et al.  The Influence of Planning and Task Type on Second Language Performance , 1996, Studies in Second Language Acquisition.

[9]  R. T. Kellogg.  Effectiveness of prewritting strategies as a function of task demands , 1990 .

[10]  C. Wickens.  Attention and skilled performance. , 1989 .

[11]  R. T. Kellogg.  Attentional overload and writing performance: effects of rough draft and outline strategies , 1988 .

[12]  Lucile Chanquoy,et al.  Revision : cognitive and instructional processes , 2004 .

[13]  M. Scardamalia,et al.  The psychology of written composition , 1987 .

[14]  Tomohito Ishikawa,et al.  Chapter 7. The Effect of Manipulating Task Complexity Along the (± Here-and-Now) Dimension on L2 Written Narrative Discourse , 2006 .

[15]  Folkert Kuiken,et al.  Task complexity and measures of linguistic performance in L2 writing , 2007 .

[16]  Lawrence Juii Zhang,et al.  Constructivist pedagogy in strategic reading instruction: exploring pathways to learner development in the English as a second language (ESL) classroom , 2008 .

[17]  Maki Ojima,et al.  Concept mapping as pre-task planning: A case study of three Japanese ESL writers , 2006, System.

[18]  Merrill Swain,et al.  Researching Pedagogic Tasks: Second Language Learning, Teaching, and Testing , 2013 .

[19]  Ellen Bialystok,et al.  Language processing in bilingual children: Metalinguistic dimensions of bilingual language proficiency , 1991 .

[20]  P. Skehan.  Task-based instruction , 2003, Language Teaching.

[21]  R. T. Kellogg.  A model of working memory in writing. , 1996 .

[22]  Wenyu Wang,et al.  L1 Use in the L2 Composing Process: An Exploratory Study of 16 Chinese EFL Writers. , 2002 .

[23]  Peter Robinson,et al.  Task complexity, theory of mind, and intentional reasoning: Effects on L2 speech production, interaction, uptake and perceptions of task difficulty , 2007 .

[24]  Folkert Kuiken,et al.  The influence of complexity in monologic versus dialogic tasks in Dutch L2 , 2007 .

[25]  Maria Mos,et al.  Cognitive task complexity and second language writing performance , 2005 .

[26]  L. Ortega.  PLANNING AND FOCUS ON FORM IN L2 ORAL PERFORMANCE , 1999, Studies in Second Language Acquisition.

[27]  J. Hayes,et al.  On the nature of planning in writing. , 1996 .

[28]  R. Ellis,et al.  The Effects of Pre‐Task Planning and On‐Line Planning on Fluency, Complexity and Accuracy in L2 Monologic Oral Production , 2003 .

[29]  R. Kirk.  Experimental Design: Procedures for the Behavioral Sciences , 1970 .

[30]  R. Ellis.  The Differential Effects of Three Types of Task Planning on the Fluency, Complexity, and Accuracy in L2 Oral Production , 2009 .

[31]  Ellen Bialystok,et al.  Analysis and Control in the Development of Second Language Proficiency , 1994, Studies in Second Language Acquisition.

[32]  Martin Bygate,et al.  Quality of language and purpose of task: patterns of learners’ language on two oral communication tasks , 1999 .

[33]  Peter Elbow,et al.  Writing Without Teachers , 1973 .

[34]  R. Ellis,et al.  THE EFFECTS OF PLANNING ON FLUENCY, COMPLEXITY, AND ACCURACY IN SECOND LANGUAGE NARRATIVE WRITING , 2004, Studies in Second Language Acquisition.

[35]  L. Zhang.  A Dynamic Metacognitive Systems Account of Chinese University Students' Knowledge About EFL Reading , 2010 .

[36]  María del Pilar,et al.  Investigating tasks in formal language learning , 2007 .

[37]  Rod Ellis,et al.  Task-based Language Learning and Teaching , 2003 .

[38]  Roger Gilabert,et al.  Effects of manipulating task complexity on self-repairs during L2 oral production , 2007 .

[39]  Shunji Inagaki,et al.  Second Language Development in Writing: Measures of Fluency, Accuracy, and Complexity , 1998 .

[40]  Peter Skehan,et al.  Cognition and Second Language Instruction: Cognition and tasks , 2001 .

[41]  Peter Skehan,et al.  The Influence of Task Structure and Processing Conditions on Narrative Retellings. , 1999 .

[42]  E. Bialystok.  Language Processing in Bilingual Children , 1991 .

[43]  L. Ortega,et al.  Balancing communication and grammar in beginning-level foreign language classrooms: A study of guided planning and relativization , 2008 .

[44]  Rod Ellis,et al.  Planning and task performance in a second language , 2005 .

[45]  Peter Robinson,et al.  Cognitive Complexity and Task Sequencing: Studies in a Componential Framework for Second Language Task Design , 2005 .

[46]  Folkert Kuiken,et al.  Cognitive task complexity and linguistic performance in French L2 writing , 2006 .

[47]  Pauline Foster,et al.  Task type and task processing conditions as influences on foreign language performance , 1997 .

[48]  R. T. Kellogg.  Effects of topic knowledge on the allocation of processing time and cognitive effort to writing processes , 1987, Memory & cognition.

[49]  J. G. Hollands,et al.  Engineering Psychology and Human Performance , 1984 .

[50]  P. Skehan.  语言学习认知法 = A cognitive approach to language learning , 1998 .

[51]  R. Dekeyser,et al.  BEYOND EXPLICIT RULE LEARNING , 1997, Studies in Second Language Acquisition.

[52]  Gillian Wigglesworth,et al.  An investigation of planning time and proficiency level on oral test discourse , 1997 .

[53]  Peter Robinson,et al.  Cognition and Second Language Instruction: COGNITION AND INSTRUCTION , 2001 .

[54]  B. K. Britton,et al.  Writing and Revising Persuasive Documents: Cognitive Demands. , 1982 .

[55]  G. Crookes.  Planning and Interlanguage Variation , 1989, Studies in Second Language Acquisition.

[56]  Mark Torrance,et al.  Revision in the context of different drafting strategies , 2004 .

[57]  R. Ellis.  Interlanguage Variability in Narrative Discourse: Style Shifting in the Use of the Past Tense , 1987, Studies in Second Language Acquisition.

[58]  Linda Flower,et al.  The Dynamics of Composing : Making Plans and Juggling Constraints , 1980 .

[59]  C. Michael Levy,et al.  The Science of Writing : Theories, Methods, Individual Differences and Applications , 1996 .

[60]  Folkert Kuiken,et al.  Cognitive Task Complexity and Written Output in Italian and French as a Foreign Language. , 2008 .

[61]  B. Vanpatten.  Attending to Form and Content in the Input , 1990, Studies in Second Language Acquisition.

[62]  William C. Ritchie,et al.  Handbook of Second Language Acquisition , 1998 .

[63]  A. Baddeley,et al.  Working Memory and Language , 2018, Working Memories.

[64]  R. Schmidt.  Awareness and Second Language Acquisition , 1992, Annual Review of Applied Linguistics.

[65]  Pauline Foster,et al.  Task Design and Second Language Performance: The Effect of Narrative Type on Learner Output , 2008 .

[66]  Uta Mehnert,et al.  THE EFFECTS OF DIFFERENT LENGTHS OF TIME FOR PLANNING ON SECOND LANGUAGE PERFORMANCE , 1998, Studies in Second Language Acquisition.

[67]  Rosa M. Manchón,et al.  On the Temporal Nature of Planning in L1 and L2 Composing , 2007 .

[68]  Donnell Hunter,et al.  Writing with power , 1981 .