Some of the predictors were measured at only one time point, whereas other predictors were measured at multiple time points. In order to make inferences about the developmental timing of various risk factors, we split up predictors according to the following time frames: a) time-invariant, b) early childhood (0–5 years of age), c) middle childhood (6–10), d) earlier adolescence (11–14), e) later adolescence (15–18), and f) adulthood (19–27). Thus, if a predictor was measured at multiple time points, we either: 1) computed an average score for the predictor within the time frame for whichever time frames data were available (e.g., peer deviance in earlier adolescence versus later adolescence), or 2) used a categorical index of whether the risk factor occurred during the time frame of interest (e.g., divorce in early childhood versus middle childhood). For predictors with multiple raters, the information was first combined across raters within year and then consolidated within time frame. For a correlation matrix of the predictors and their means and standard deviations, see Appendix S2.
