Abstract
The effectiveness of assertiveness training, the duration of its effect, and changes in life style or relationships after training were examined in a longitudinal study of 11 white middle-class adult women who participated in a 10-wk. assertiveness training course. An assertiveness inventory, a life-style and health check list, and an interview were used as initial and follow-up measures for the trained group and a comparison group. Follow-up measures were completed six to eight weeks following training and 24 to 36 months later. Pretest assertiveness scores for the trained group were significantly lower than for the comparison group but did not differ significantly at the time of the posttest or the final follow-up test. No significant differences between groups were found on the life-style and health check lists.
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