Given the importance of close relationships in all facets of human life, it is no surprise that research on relationship processes is multidisciplinary and divergent in methodology. Such diversity in the study of close relationships should allow for a more detailed and comprehensive understanding of relationship processes, but researchers in different fields have yet to integrate their findings into a deeper, more holistic model of close relationship functioning. This book brings together different perspectives on close relationships to explore how such relationships develop, function, and interact across a variety of contexts. Prominent scholars contribute theory and empirical research rooted in developmental, social, and cross-cultural psychology, as well as evolutionary science, individual differences, and psychophysiology. Both early and adult relationships are examined, along with parent-child relationships. This excellent resource will be well received by researchers and students in the social sciences who are interested in a broader, more collaborative approach to relationship science.