I. Comparative and Developmental Perspectives.- 1. Predictability and Control in Relationships: A Perspective from Animal Behavior.- 2. Compatibility in Parent-Infant Relationships: Origins and Processes.- 3. Compatibility and Incompatibility in Children’s Peer and Sibling Relationships.- II. Behavioral Interdependence: Social Exchange.- 4. Equity and Intimate Relations: Recent Research.- 5. Implications of Relationship Type for Understanding Compatibility.- III. Emotional Interdependence.- 6. Compatibility, Interdependence, and Emotion.- 7. Incompatibility, Loneliness, and “Limerence”.- IV. Personality and Cognitive Interdependence.- 8. Sex-Role Influences on Compatibility in Relationships.- 9. The Role of the Self in the Initiation and Course of Social Interaction.- 10. Marital Compatibility and Mutual Identity Confirmation.- 11. Cognitive Interdependence in Close Relationships.- 12. Interpersonal Perception in Relationships.- V. Perspectives on Marital Interaction.- 13. Compatibility in Marriage and Other Close Relationships.- 14. Assessment and Treatment of Incompatible Marital Relationships.- Author Index.