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Updated: May 12, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
Interpolated memory tests reduce mind wandering and improve learning of online lectures
Karl K Szpunar1, Novall Y Khan, Daniel L Schacter
1Department of Psychology, Harvard University, Cambridge, MA 02138, USA. szpunar@wjh.harvard.edu
Interpolating online lectures with memory tests improves student attention and learning. Frequent testing reduces anxiety and cognitive load, enhancing online education delivery.
Area of Science:
- Educational Technology
- Cognitive Psychology
Background:
- Online education faces challenges in maintaining student engagement.
- Students often struggle with sustained attention during online lectures.
Purpose of the Study:
- To investigate the impact of interpolated memory testing on attention and learning in online lectures.
- To explore how frequent testing affects student engagement and cognitive load.
Main Methods:
- Two experiments were conducted involving online lectures.
- Memory tests were interpolated within the online lecture content.
- Student attention, note-taking, and learning outcomes were assessed.
Main Results:
- Interpolated testing discouraged mind-wandering and encouraged note-taking.
- Frequent testing improved learning and reduced subjective cognitive demand.
- Testing was associated with reduced anxiety towards cumulative assessments.
Conclusions:
- Interpolated testing is a viable strategy to enhance student attention and learning in online environments.
- This method can improve the effectiveness of online educational content dissemination.
- Frequent testing offers a practical solution to common challenges in online learning.
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