The study examined therapeutic approach, professional affiliation, training, seniority, and work setting as predictors of attitudes toward standardized instruments and their use in couple therapy. Data were gathered from 163 certified marriage and family therapists in Israel. Results showed that 27.6% of marital therapists used standardized instruments for assessment. More positive attitudes toward standardized instruments were associated with the extent of training in their use and with a structural–strategic approach. Logistic regression analysis indicated that positive attitudes, training, and work setting best predict the application of standardized assessment instruments. Reasons for the relative lack of use of standardized assessment instruments are discussed. It is recommended that more training in assessment instruments be included in marriage and family therapy training.