We used approach/avoidance theory to develop a conceptual model of stu
dent attrition that we estimated using 262 first- and second-year stud
ents at a major midwestern research university. We found that we could
use psychological theories to enhance our understanding of the retent
ion process; that psychological and sociological factors accounted for
37 percent of the variance in student attrition; and that institution
s can enhance retention by developing programs that increase appropria
te academic and social approach behaviors and reduce-avoidant behavior
s.