Among interventions that increased exercise during the intervention, carry-over effects were proportionally similar to previous research¶

Claim · All claims
Evidence · 1 study · causal r? · q3
Currency · newest study 2021 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

q3 i? Conditioning on the 45% of interventions that increased exercise during the intervention, the megastudy detected carry-over effects proportionally similar to those measured in previous research. → Kautz 2021

Evidence¶

Kautz 2021¶

Kautz, T., Milkman, K. L., Gromet, D., et al. as printed in full author line. (2021). Megastudies Improve the Impact of Applied Behavioural Science. Nature, vol. 600. https://www.mathematica.org/publications/megastudies-improve-the-impact-of-applied-behavioural-science doi:10.1038/s41586-021-04128-4

q3 · i? · causal · r?

Carry-over analysis in the fitness-chain megastudy: the article states that "Conditioning on the 45% of interventions that increased exercise during the intervention, we detected carry-over effects that were proportionally similar to those measured in previous research." No effect size is printed in the available text.

"Conditioning on the 45% of interventions that increased exercise during the intervention, we detected carry-over effects that were proportionally similar to those measured in previous research."

Discussion¶

Learner Variables¶

• Physical Well-Being — outcome: instruction changes it

Related Claims¶

• Forecasts by impartial judges failed to predict which interventions would be most effective — related
• 45% of the 54 exercise interventions significantly increased weekly gym visits by 9% to 27% during the four-week intervention — related
• Only 8% of the exercise interventions induced behaviour change that was significant and measurable after the four-week intervention — related
• The top-performing exercise intervention offered microrewards for returning to the gym after a missed workout — related