Development of an objective measure to assess ego identity in adolescence: Validation and replication

Three studies that evaluate the reliability and validity of the Extended Version of the Objective Measure of Ego Identity Status (Adams and Grotevant, 1983) are reported. In Studies 1 and 2, college students in Texas and Utah, respectively, completed the identity measure, the Extended Range Vocabulary Test, and the Crowne-Marlowe Social Desirability Scale and released achievement results from their college records. The identity measure was found to have acceptable reliability (both internal consistency and test-retest) and validity (content, factorial, discriminant, and concurrent). In Study 3, scale scores from the objective identity measure correlated in the predicted pattern with ratings of identity exploration and commitment made from the Ego Identity Interview. Although the objective measure is not intended to replace the interview, it would appear to be useful in a number of situations where administration of the interview is impractical.We gratefully acknowledge the assistance of Dan Tousley in the data collection and data analysis phases of this research. Data collection and analyses for Study 3 were provided by grants from the Hogg Foundation for Mental Health, the National Institute of Child Health and Human Development, the University of Texas Research Institute, and the University of Texas Institute of Human Development and Family Studies to Harold D. Grotevant and Catherine Cooper, Co-Principal Investigators.Study 2 was supported by the W144 regional research grant on The Development of Social Competency in Children with funding from the United States Department of Agriculture and the Utah State University Agricultural Experiment Station, directed by Gerald Adams.Received Ph.D. in child psychology from the University of Minnesota. Research interests concern the contribution of family relationships to personality and identity development in adolescence.Received Ph.D. from The Pennsylvania State University. Research interests include adolescent social and personality development.