Use A-B-A withdrawal designs integrating the summer break to study reduced physical activity effects on cognition¶

Strategy · All strategies
Evidence · 1 claim (1 for) · 1 study (1 review), q2 · 0 of 1 report an effect size · 1 claim rests on one study

Description¶

The authors recommend the A-B-A (withdrawal) design, consisting of two baseline phases and a withdrawal phase, for studying how reduced physical activity affects children's cognitive and academic performance. Its key advantage is that "the re-implementation of the stimulus during the second baseline phase of the studies (i.e., higher levels of regular physical activity in the school period that follows the summer break), which allows for more robust conclusions" than A-B designs. The design can be extended to A-B-A-B-A across successive breaks to replicate observations, and can be implemented in both observational and intervention studies with the summer break as the natural withdrawal phase.

Design Implications¶

Context¶

Requirements¶

• The withdrawal of the stimulus must be ethically acceptable
• The effect of the stimulus on the dependent variable needs to be reversible, otherwise the effect cannot be demonstrated

Constraints¶

• The article notes observational versions have lower experimental control, making it hard to disentangle reduced mental stimulation from reduced physical stimulation during summer

Target Learners¶

• school-aged children

Target Learning Goals¶

• establishing causal effects of reduced regular physical activity on cognitive and academic performance

Affordances¶

• Structured Day Hypothesis Children

Claims¶

• School-aged children show reduced physical activity and increased sedentary behavior during the summer break across multiple countries [+W]

Related Strategies¶

• Treat the low-active condition as the experimental condition in physical activity studies with children

Examples¶

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Key Sources¶

• Herold, F., Ludyga, S., Mavilidi, M. F., Benzing, V., Vazou, S., Tomporowski, P. D., & Pesce, C. (2025). The Other Side of the Coin – A Call to Investigate the Influence of Reduced Levels of Physical Activity on Children's Cognition. Educational Psychology Review. https://doi.org/10.1007/s10648-025-10031-5