An approach for tracking a mobile group of 1,045 junior high school transfers and minimizing attrition in a longitudinal study of adolescent behavior was studied. Students were tracked through the home or directly through the new school. The new school strategy was very effective and greatly improved tracking. (SLD)

Recruiting schools and kids to participate in drug prevention evaluations is no longer, if it ever was, a "done deal." Since the mid-1980s, schools have been inundated with requirements for drug programs and requests to cooperate with program evaluations. As a consequence, both treatment and control schools are harder to find. In addition, many…

Longitudinal studies conducted with children typically experience non-response problems that can make substantial inroads on sample size and introduce bias into the analysis. Three methods for limiting non-response in school-based research programs were assessed: (1) asking parents to return consent forms only if they do not want their children to…