In preparation for a community-based study of depression in adolescence, several pilot studies were conducted with samples of adolescents. The purpose of these studies was to evaluate the reliability and association with depression of several instruments when used with older (14- to 18-year-old) adolescents. These instruments included measures of cognitions, body image, self-esteem, self-awareness, social interactions with peers and family, social support, micro- and macrostressful life events, anxiety and tension, positive affect, antisocial or oppositional behavior, suicidal ideation, and vocabulary. The internal consistency reliability and stability of most of the instruments were satisfactory. In addition, most instruments were associated with a measure of depression, Radloff's Center for Epidemiological Studies-Depression Scale. Several of the scales were successfully abbreviated using techniques based on factor analysis and item analysis.