Task Complexity and Design Science
نویسندگان
چکیده
Design problems manifest themselves in many ways. Before anything resembling a true “science of design” can emerge, tools for classifying the design task must be developed. One such tool involves the task complexity construct, which comes in three distinct forms: objective complexity, problem space complexity and lack of structure. These forms, which can appear individually or in combination, each demand different approaches to the design task. Objective complexity entails a process dominated by search. Problem space complexity is often addressed by the accumulation of design rules. Lack of structure can benefit from the creation of different types of models. This paper describes the task complexity construct and explores—using a mix of theory and examples—its relationship
منابع مشابه
The Effect of Task Complexity on EFL Learners’ Narrative Writing Task Performance
This study examined the effects of task complexity on written narrative production under different task complexity conditions by EFL learners at different proficiency levels. Task complexity was manipulated along Robinson’s (2001b) proposed task complexity dimension of Here-and-Now (simple) vs. There-and-Then (complex) in. Accordingly, three specific measures of the written narratives were targ...
متن کاملOrchestrating Task Planning in Writing: The Impact of Pre-Task Planning and Within-Task Planning on Fluency, Accuracy, and Complexity of Iranian EFL Learners’ Writing
Building on Robinson’s (2001, 2003) Cognition Hypothesis, Skehan’s (1998) Limited Attentional Capacity Model, and Kellog’s (1986) model of writing, this study examined the effect of task planning on the fluency, accuracy, and complexity of 60 Iranian EFL learners’ argumentative and narrative writings under different planning conditions. A quasi-experimental design with three levels of planning ...
متن کاملCognitive Task Complexity and Iranian EFL Learners’ Written Linguistic Performance across Writing Proficiency Levels
Recently tasks, as the basic units of syllabi, and the cognitive complexity, as the criterion for sequencing them, have caught many second language researchers’ attention. This study sought to explore the effect of utilizing the cognitively simple and complex tasks on high- and low-proficient EFL Iranian writers’ linguistic performance, i.e., fluency, accuracy, lexical complexity, and structura...
متن کاملThe Effect of Training and Task-Planning on the Complexity of Iranian Learners’ Oral Speech
The shift of emphasis away from written to oral skills has stimulated an incipient concern in second language research to investigate ways of helping second and foreign language learners achieve higher degrees of oral proficiency. Priority solely taken over accuracy, complexity, or fluency of speech might be justifiable with regard to the context in which learning takes place. Accuracy and com...
متن کاملTask Complexity Manipulation and Accuracy in Writing Performance
This study aimed to investigate the impact of task sequencing, along +/- reasoning demands dimension, on writing task performance in terms of accuracy. The study was motivated by Robinson’s Cognition Hypothesis (CH) as well as previous studies investigating the relationships between task complexity and second language production. The participants of the study were 90 intermediate students at t...
متن کاملStudents’ Oral Assessment Considering Various Task Dimensions and Difficulty Factors
This study investigated students’ oral performance ability accounting for various oral analytical factors including fluency, lexical and structural complexity and accuracy with each subcategory. Accordingly, 20 raters scored the oral performances produced by 200 students and a quantitative design using a MANOVA test was used to investigate students’ score differences of various levels of langua...
متن کامل