We used the program EQS to test alternative measurement models and relations between factors (Bentler, 2004). The program allows for the simultaneous estimation of direct and mediating effects on latent variables. It also provides the ability to impute missing values, which in this dataset were primarily observed for a measure of working memory using the digit-span test. Due to an administration error, scores for this test were not available for approximately 16% of the sample. Additionally, EQS offers robust statistics, which adjust for the effects of departures from multivariate normality due to skewness and kurtosis. All coefficients shown in the results have probabilities evaluated with robust standard errors.
