Marks and classroom adjustment as early indicators of mental health at age twenty

The data are derived from a 15-year longitudinal study of 659 urban children who entered kindergarten in 1968, 371 who were interviewed at the age of 20. Analyses related school adjustment and academic performance in the early primary grades, early adolescence, and middle adolescence to mental health outcomes based on responses to a short form of the MMPI at age 20. The results suggest that poor marks, absence of positive coping behaviors, and presence of negative coping behaviors are indicators of later mental health problems, that the absence of positive coping behaviors may be more indicative of later problems than the presence of negative coping behaviors, and that there are sex differences in the time periods at which indicators of school productivity are important.