Marjan Jamali Motlagh, Ali Fathi Ashtiyani and Ali Akbar Soleimani
This research aims to study effectiveness of group training of Beck's model-based cognitive therapy on assertiveness of female heads of household in city of Tehran. The research hypothesis was: group training of Beck's model-based cognitive therapy has an effect on assertiveness of female heads of household. To test this hypothesis, a sample including 30 female heads of household who were members of municipality districts 15 and 16 was selected by randomized method, who were assigned to two experimental (15 persons) and control (15 persons) groups. In this research, Gambrill and Richey's assertiveness questionnaire was used. Experimental group underwent 10 sessions of training workshop (one session per week), while control group did not receive training during this period. In the beginning of the training course, the said questionnaire was administered to sample for pre-test, and after completion of training workshop, pre-test was applied. The present study had a quasi-experimental design. In inferential level, given the assumptions of covariance and for the purpose of avoiding biased data, analysis of covariance was used. Based on the results of analysis of covariance and significance coefficient of lower than 0.05, the research's hypothesis was confirmed, and it can be concluded that group training of Beck's model-based cognitive therapy has an effect on increase in assertiveness among female heads of household.
