| Field | Before | After |
|---|---|---|
| Field Study Withdrawn | Before | After No |
| Field Intervention Completion Date | Before | After December 14, 2016 |
| Field Data Collection Complete | Before | After Yes |
| Field Final Sample Size: Number of Clusters (Unit of Randomization) | Before | After 113 schools |
| Field Was attrition correlated with treatment status? | Before | After No |
| Field Final Sample Size: Total Number of Observations | Before | After 1,810 pupils. |
| Field Final Sample Size (or Number of Clusters) by Treatment Arms | Before | After 36 schools control, 77 schools treatment |
| Field Is there a restricted access data set available on request? | Before | After Yes |
| Field Restricted Data Contact | Before | After [email protected] |
| Field Program Files | Before | After No |
| Field Data Collection Completion Date | Before | After December 14, 2016 |
| Field Is data available for public use? | Before | After No |
| Field | Before | After |
|---|---|---|
| Field Paper Abstract | Before | After Physical activities have several benefits for mental and physical health, but the evidence on preschool-age children is limited. This article tests whether martial arts can provide a stimulating environment for boosting children’s executive functions. Exploring a preschool programme that randomly assigned schools to receive capoeira classes, we estimate an intention-to-treat effect on children’s inhibitory control, short-term memory, and cognitive flexibility. Results show modest positive impacts on inhibitory control only. Treated children performed 0.13 of a standard deviation better than the control group. Instrumental variable estimation provides additional positive impact on children’s inhibitory control. In addition, children living in households that receive the Bolsa Família grant and those born to mothers with low schooling levels tend to show larger impacts. |
| Field Paper Citation | Before | After Guilherme Hirata, Improving children’s executive functions: evidence from capoeira, Oxford Economic Papers, Volume 75, Issue 2, April 2023, Pages 490–506, https://doi.org/10.1093/oep/gpac027 |
| Field Paper URL | Before | After https://academic.oup.com/oep/article-abstract/75/2/490/6613225 |