Web-Based Instruction 1 The Comparative Effectiveness of Web-Based and Classroom Instruction: A Meta-Analysis

Meta-analytic techniques were used to examine the effectiveness of Web-based instruction (WBI) relative to classroom instruction (CI) and to examine moderators of the comparative effectiveness of the two delivery media. Overall the results indicate WBI is 6% more effective than CI for teaching declarative knowledge, the two delivery media are equally effective for teaching procedural knowledge, and trainees are equally satisfied with WBI and CI. However, WBI and CI were equally effective for teaching declarative knowledge when the same instructional methods were used to deliver the two courses, suggesting media effects are spurious and supporting Clark’s (1983, 1994) theory. Finally, WBI was 14% more effective than CI for teaching declarative knowledge when trainees were provided with control during WBI and in long training courses. Study limitations and directions for future research are discussed.