Self-destructiveness can be viewed in two ways: as performing an act which one knows cognitively is not conducive to one's welfare but nonetheless leads to some pleasurable affect (e.g., overeating, smoking); or not performing an act one knows one should perform but which has some negative affective consequences (e.g., dental checkups, saving…

Examined the psychometric properties of the Peer Nomination Inventory of Depression (PNID). Reliability proved highly acceptable. Content validity was determined by experts' judgments. Subjects with high PNID scores exhibited depressed intellectual functioning, poor social behavior, and diminished ebullience. (Author)