Results of serial mediation model relating scarcity-adversity (6 months), maternal cortisol (CORT; 6, 15, 24 months), infant CORT (6, 15, 24 months), and child engagement in a mother-child interaction task. MCX = mother-child interaction task; CFI = comparative fit index; SRMR = standardized root square mean residual; RMSEA = root mean squared error of approximation. Covariates are not shown. Circles represent latent variables.