Play Study, mother-child dyads. Mediation model: From child security to child and mother willing stance to developmental outcomes. Reported unstandardized coefficients, standard errors (in parentheses), bootstrap 95% CIs [in brackets], and completely standardized indirect effect size (ES). Solid lines represent significant effects; dashed lines represent non-significant effects. M = Mother, C = Child. Significant indirect effects are bolded. Covariates include child gender, group assignment, and antecedents (measured at 2.5 years) of outcomes and mediators (measured at 7 years), but are not depicted.