This report resulted from the systematic analysis undertaken by the NAEP Validity Studies Panel in 2001 to consider the domain of validity threats to NAEP and to identify the most urgent validity research priorities as that time.
A recent special issue in the Journal of Drug and Alcohol Dependence highlights findings from three decades of research on the Good Behavior Game and its impact on a variety of long term behavioral and mental health outcomes.
This study estimated the potential bias from "worst-case" scenarios of selective non-participation in NAEP, and examined the extent to which statistical methods can correct for that bias.