Sara E. Brownell|Matthew Kloser|Tadashi Fukami|Richard J. Shavelson
Context Matters: Volunteer Bias, Small Sample Size, and the Value of Comparison Groups in the Assessment of Research-Based Undergraduate Introductory Biology Lab Courses
Arizona State University|University of Notre Dame|Stanford University|Stanford University
shift cookbook authentic researchbased lab courses undergraduate biology necessitates need evaluation assessment novel courses although biology education community made progress area important interpret effectiveness courses caution remain mindful inherent limitations study designs may impact internal external validity specific context research study dramatic impact conclusions present case study threeyear investigation impact researchbased introductory lab course highlighting volunteer students lack comparison group small sample sizes limitations study design affect interpretation effectiveness course