Sampling
After registering on the website of the Iranian Registry of Clinical Trials (IRCT20170506033834N8), sampling was done in Asad-Abadi and Haft-e-Tir marriage counseling centers in Tabriz from June to March 2021. The researcher (first author) attended the marriage counseling centers, identified eligible women using the archived information, and after calling and explaining the research objectives, invited those who wanted to participate in the study to attend marriage counseling centers at the appointed time. In the face-to-face session, after completing the questionnaires, women who scored less than 50 in the Hulbert sexual assertiveness index and less than 76 in Larson sexual satisfaction questionnaire were explained the method of the study. Then, they completed the written informed consent form.