Effortful control (EC), the regulatory component of temperament, has been found to predict various types of developmental outcomes (Eisenberg et al., 2016). Parenting behaviors have been found to predict and be predicted by children’s EC. However, existing findings on the magnitude and direction of the relations between parenting behaviors and children’s EC are not conclusive. Thus, to help resolve replication crisis and obtain more comprehensive findings from both published and unpublished studies and from diverse populations, I conducted a meta-analysis of the existing literature focusing on the direction of effects and magnitude of the longitudinal relations between parenting behavior and children’s EC. In this work, two research questions were addressed: 1) What were the magnitudes of the prediction from parenting behaviors to later children’s EC, and of the prediction from children’s EC to later parenting behaviors? 2) If heterogeneity existed among relations between parenting behaviors and children’s EC, was the variance explained by a) publication status, and b) other moderators, such as sample characteristics, types of EC and parenting behaviors, and aspects of study design? Using 2506 effect sizes from 271 studies, I found significant small to moderate effect sizes for both the overall parent effect and the overall child effect. Further, heterogeneity existed among both the parent and the child effects. Moderators including child age, race and ethnicity, types of parenting behaviors, types of children's EC, method similarity of parenting versus EC, and consistency of informants were found to explain the heterogeneity of parent effects. Moderators including child age, child gender, family structure (i.e., whether the household has two parents), parent gender, types of parenting behaviors, the measurement of EC, method similarity of parenting versus EC, and consistency of informants were found to explain the heterogeneity of child effects. Based on results of the overall effects, tests of publication bias, and moderation analyses, I provided theoretical and methodological implications and related future directions. Strength, limitations, and implications for intervention studies or practices of the present review were also discussed.