When interest in self-esteem exploded in the 1980s, many longitudinal studies were already under way and thus did not administer self-esteem measures. Consequently, not much is known about the developmental course of self-esteem during adulthood. In order to facilitate life-span research using existing longitudinal studies, a new self-esteem scale (CPI-SE) was derived from the California Psychological Inventory. Study 1 documented the internal consistency and test - retest reliability of the CPI-SE, as well as its convergent validity by comparing it to three commonly used measures of self-esteem. Study 2 examined the nomological network of the CPI-SE by relating it to interviewer ratings of self-esteem, affect, coping style, social skills, intelligence, and physical attractiveness, obtained with the California Adult Q-Set. Together, these two studies provide evidence for the construct validity of the CPI-SE.
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