Path diagram with standardized coefficients for model with age 6 diurnal cortisol rhythm (6yr Cort Slope) predicting age 9 externalizing behavior (9yr Externalizing Behavior). D1AM-D3AM and D1PM-D3PM represent log-transformed morning cortisol indicators and bedtime cortisol indicators, respectively. Model fit statistics indicated good fit: χ2 (59) = 77.74, p = .052; χ2/df = 1.32, RMSEA = .03, CFI = .97, TLI = .95, *p < .05, ***p < .001, ns = non-significant