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Family RelationshipsAn Evolutionary Perspective$
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Catherine A. Salmon and Todd K. Shackelford

Print publication date: 2007

Print ISBN-13: 9780195320510

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780195320510.001.0001

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All in the Family: An Evolutionary Developmental Perspective

All in the Family: An Evolutionary Developmental Perspective

(p.337) 15 All in the Family: An Evolutionary Developmental Perspective
Family Relationships

Amy Gardiner

David F. Bjorklund

Oxford University Press

This chapter looks briefly at evolutionary theory applied to human families, in particular inclusive fitness and parental investment theories, as well as some assumptions derived from evolutionary developmental psychology, including the concepts of ontogenetic, deferred, and conditional adaptations. It then examines factors that influence the investment decisions that mothers, fathers, grandparents, and stepparents make with regard to children. Lastly, it looks at issues related to living with siblings, including factors that influence both sibling conflict and cooperation and mechanism responsible for incest avoidance.

Keywords:   inclusive fitness, parental investment, adaptations, sibling conflict, cooperation

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