College students hypothesized as being at risk for psychiatric dysfunction solely on the basis of their MAO platelet activities were briefly interviewed 2 years after completion of inital studies. These 33 low-MAO subjects reported more job instability than 30 high-MAO control subjects. Moreover, the low-MAO males had fallen about half a year behind their high-MAO counterparts in school. More low-MAO male subjects reported mental health probelms in their families, esp. depression & suicide.