Several limitations must be mentioned to place these findings in the appropriate context. First, due to the nature of the parent study from which the current participants were drawn, the sample sizes reported herein are small. Moreover, the sample is largely Caucasian and does not represent lower SES backgrounds. Although the patterns reported here cohere well with the existing literature, replication and extension within larger, more representative, samples, across a broader age range, and across multiple years of longitudinal assessment is needed. We are in the midst of data collection to pursue those aims.
