Unit nonresponse or attrition in panel data sets is often a source of nonrandom measurement error. Why certain individuals attrite from longitudinal studies and how to minimize this phenomenon have been examined by researchers. However, this research has typically focused on data sets collected...

Unit nonresponse or attrition in panel data sets is often a source of nonrandom measurement error. Why certain individuals attrite from longitudinal studies and how to minimize this phenomenon have been examined by researchers. However, this research has typically focused on data sets collected...

Though researchers now are aware of the potential importance of character skills, such as conscientiousness, grit, self-control, and a growth mindset, researchers struggle to find reliable measures of these skills. In this paper, we use data collected from the Understanding America Study, a...