The assessment of Transactional Analysis ego states via the Adjective Checklist

Transactional Analysis (TA) conceptualizes personality in terms of five functional ego states: Critical Parent (CP), Nurturing Parent (NP), Adult (A), Free Child (FC), and Adapted Child (AC). The present investigation was designed to develop a procedure for the assessment of the relative strength of ego states from the responses of persons who are not familiar with TA theory. Fifteen TA experts assigned ego-state ratings to the 300 items of the Adjective Check List (ACL) with high interjudge agreement being found. Using the judges' mean raft rigs, a system was developed for obtaining ego-state scores for any selected set of ACL adjectives. The use of the system was illustrated by its application to the ACL self-descriptions of 100 university students which were analyzed in terms of "egograms" in which the five functional ego states were expressed relative to one another. A test-retest study involving an additional 154 students demonstrated stable individual differences in ego-state scores. Mean egograms of female and male students did not differ from one another but showed appreciable differences from the expert judges' ratings of the "psychologically healthy person." The potential Usefulness of the procedure in clinical practice and in testing TA theory is discussed.