Cross-lagged models showing the autoregression pathways among time points, associations at each time point, and cross-lag pathways between BMI and internalizing symptoms from 3 to 14 years of age. Pathways indicated with continuous, solid lines are statistically significant, whereas pathways indicated with dashed lines are not statistically significant. A, The model controlling for sociodemographic factors on all variables and externalizing and parental mental health on internalizing symptoms (model fit: multigroup model root mean square error of approximation [RMSEA], 0.023; comparative fit index [CFI], 0.95; Tucker-Lewis index [TLI], 0.95; standardized root mean square residual [SRMR], 0.032). B, The model with socioeconomic position (SEP) variables included as controls across all time points (model fit: RMSEA, 0.026; CFI, 0.91; TLI, 0.90; SRMR, 0.05).