Executive functioning has important implications for multiple developmental processes and outcomes. However, the degree to which executive functioning varies between and within racial/ethnic groups in the United States is less understood. To address this issue, we will conduct a systematic review and meta-analysis of overall executive functioning and its three core components: inhibitory control, working memory, and cognitive flexibility. Our goals are to: 1) examine differences across these components between Whites and minorities, as well as differences between- (e.g., African-Americans, Latinos) and within- (e.g., Latinos: Mexican-Americans, Cuban-Americans) minority groups; and 2) test potential moderators of these differences (e.g., sex, age, measure). We will address the implications of these findings in terms of support for the cultural differences and similarities hypotheses.