This meta-analytic study examines the relationship between dispositional self-control and behavior, drawing on 102 studies (total N = 32,648) that used the Self-Control Scale, the Barratt Impulsiveness Scale, and the Low Self-Control Scale. The study found a small to medium positive effect of self-control on behavior, with self-control being similarly related to the performance of desired behaviors and the inhibition of undesired behaviors. However, the effects varied across life domains, such as achievement and adjustment. Additionally, the associations between self-control and behavior were stronger for automatic (compared to controlled) behavior and imagined (compared to actual) behavior. The study also evaluated the three scales and their psychometric properties, providing insights into the measurement of self-control.This meta-analytic study examines the relationship between dispositional self-control and behavior, drawing on 102 studies (total N = 32,648) that used the Self-Control Scale, the Barratt Impulsiveness Scale, and the Low Self-Control Scale. The study found a small to medium positive effect of self-control on behavior, with self-control being similarly related to the performance of desired behaviors and the inhibition of undesired behaviors. However, the effects varied across life domains, such as achievement and adjustment. Additionally, the associations between self-control and behavior were stronger for automatic (compared to controlled) behavior and imagined (compared to actual) behavior. The study also evaluated the three scales and their psychometric properties, providing insights into the measurement of self-control.