ERIC Number: ED448203
Record Type: Non-Journal
Publication Date: 2000-Nov-15
Reference Count: N/A
Treatment by Aptitude Interactions as a Mediator of Group Performance in Research Methodology Courses.
Collins, Kathleen M.; Onwuegbuzie, Anthony J.
This study investigated whether cooperative learning groups with the highest mean levels of knowledge of the research process, as measured via midterm and final examination scores, produced the best cooperative learning projects, as measured by the quality of research article critiques and proposals. It also explored whether heterogeneity was related to the quality of the group projects, and whether the size of the group was related to the quality of the output produced. Participants were 275 graduate students enrolled in several sections of an introductory level educational research course who, through a modified stratified random assignment procedure, formed 70 groups ranging in size from 2 to 7. Using group as the unit of analysis revealed a small-to-moderate positive relationship between the mean midterm and final examination scores and scores on the article critiques and proposals, a finding suggesting a "Matthew Effect" with respect to group outcomes. A positive relationship was found between degree of group heterogeneity at the midterm level and scores on the projects. Also, a quadratic trend defined the relationship found between group size and performance on the article critique. Finally, a treatment (i.e. group heterogeneity level) times aptitude (i.e., mean midterm group performance) was found with respect to the article critiques produced. (Contains 1 figure and 65 references.) (Author/SLD)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A