Facilitating or hindering learning - a meta-analysis of acceleration on video learning

Area of Science:

• Educational Technology
• Cognitive Psychology

Background:

• The effectiveness of time compression in instructional videos is debated among researchers.
• Existing studies lack consensus on whether accelerated playback enhances video learning.

Purpose of the Study:

• To conduct a meta-analysis of experimental and quasi-experimental studies on the impact of instructional video acceleration on learning.
• To investigate the moderating roles of teacher appearance, subtitles, and subject attributes in video acceleration's effects.

Main Methods:

• A meta-analytic approach was used to synthesize findings from 12 domestic and international research papers.
• Moderation analyses were performed to examine the influence of specific variables.

Main Results:

• Accelerated video playback significantly increased cognitive load (g = 0.59).
• Learning outcomes, including maintenance (g = -0.41) and migration test scores (g = -0.50), were negatively impacted.
• Learner satisfaction decreased (g = -0.24), with moderation effects observed for teacher appearance, subtitles, country, and subject attributes.

Conclusions:

• Instructional video acceleration can negatively affect cognitive load, learning performance, and satisfaction.
• Designers and learners should carefully consider video playback speed for optimal educational outcomes.
• Educators must be aware of publication bias and avoid overestimating acceleration's benefits.