He also reported an effect of d = 0.33 on engagement, d = 0.29 on reducing risk behaviors, and d = 0.23 on identity formation. Similarly, he found an effect from participating in sports of d = 0.10 on achievement, d = 0.16 on engagement, d = –0.16 on reducing risk behaviors, and d = 0.15 on identity formation.
Keep those kids on teams
