Sect. I. Evaluation. 1. The Evaluation of Couples and Families. 2. The Interview and History Taking -- Sect. II. Marriages. 3. Observations of Marital Interactions: Implications of Research Findings for Marital Therapy. 4. Behavioral Measures of Marital Interaction. 5. Sexual Functioning and Sexual Relationships. 6. Nonbehavioral Self-Report Measures of Marital Quality. 7. Some of the Most Commonly Used Nonbehavioral Measures of Marital Quality -- Sect. III. Families. 8. Self-Report of Family Functioning. 9. Atheoretical and Eclectic Approaches. 10. Projective Techniques -- Sect. IV. Conclusion. 11. Ethical and Professional Issues in the Evaluation of Couples and Families.