Fig. 3

Sample attrition summary for childhood self-regulation assessments. Unless otherwise noted, there were no significant differences between those who participated at each time point compared to those who did not. As in most longitudinal studies, some participants were involved intermittently, participating at some assessment points, missing others, but then resuming their participation in the study at later time points. * denotes that families with lower 2 years SES were less likely to participate. EA = European American, A = African American, O = Biracial or Other Race