Cognitive and Motivational Scaffolding First-Year Engineering Students Need When Solving Design Problems in Collaborative Teams

摘要

This study aims to contribute to the literature on engineering learning by examining the role of team discourse in supporting or hindering first-year engineering students' self-efficacy and achievement. Bandura's self-efficacy theory and Vygotsky's social constructivist theory were used as theoretical frameworks. Twenty-five first-year engineering students (six teams) participated in the study and their team discussions were video and audio recorded between February and May 2007. During the study, students worked on three design projects: a fire rescue project, a pharmaceutical lozenge design project, and a street-crossing problem. A three-stage sequential mixed-methods approach (qualitative → quantitative → qualitative) was used for data analysis. The first and second stages involved the coding of student talk and correlation analyses between self-efficacy, achievement, and discourse type. Results from these two phases were presented in detail in a previous paper. In summary, the analyses showed a statistically significant positive correlation between the amount of supportive comments given and the self-efficacy of the giver. There was a negative correlation between self-efficacy and engagement in disruptive behaviors. In addition, initial self-efficacy was found to be a predictor of responsive behavior. The third step of the data analysis, the focus of this paper, involved an in-depth examination of three case study students (Bryan, a support-oriented student; Eric, a response-oriented student; and Alex, a disruptive student) and their teams. Results suggest that supportive comments can improve self-efficacy and motivation and are critical for collaborative decision-making; however, a lack of analytical argumentation and skepticism can hinder cognitive processes and hurt student learning. As an implication of this study, a list of recommendations is made and an instrument is developed to help scaffold student team processes.