
Assertiveness reflects people’s expression of their genuine feelings, standing up for their legitimate rights, and refusing unreasonable requests. Assertiveness training helps individuals to cope assertively, be more confident and competent in handling difficult situations. The present study was undertaken with an aim to find out the effectiveness of an assertiveness training program on assertiveness skills and mental, physical and spiritual wellbeing of Muslim adolescent girls. A total of 100 Muslim adolescent girls who were found to be situationally non assertive were selected by systematic random sampling method and assigned randomly to the test (n=50) and control group (n=50). The Rathus Assertiveness Schedule by Rathus (1973) was used to assess the assertiveness level of the selected Muslim adolescent girls. The mental, physical, and spiritual well-being of the selected girls was assessed by the Mental, Physical, and Spiritual Well-being Scale (MPS) developed by Vella- Brodrick and Allen (1995). Assertiveness training programme was planned and conducted for a period of five weeks held once weekly. Post test was done after a period of two months to assess the effectiveness of the intervention programme. The data obtained was subjected to statistical interpretation using SPSS (version 17). The findings of this research confirmed that the assertiveness training programme has been very effective in improving the assertiveness as well as the overall wellbeing of the adolescents.