Co-residence and Early Maternal Perinatal Association
Co-residence and early maternal perinatal association are two important kinship cues for identifying siblings.
Although kin selection, inbreeding avoidance, and cooperation and conflict within the family do not necessitate an ability to identify another individual as a sibling, kin recognition is believed to be a central mechanism in the individual development of kin-directed social behavior in humans (e.g., Penn and Frommen 2004). Concerning siblings, two important kinship cues are co-residence and early maternal perinatal association.
The Westermarck Effect
Human kin recognition is thought to rest largely on environmental information, and this kin recognition can be direct (e.g., phenotype matching) or indirect. Co-residence and maternal perinatal association are two indirect kinship cues humans use to identify siblings. In 1891, Westermarck hypothesized that two individuals living closely together during...
KeywordsParental Investment Young Sibling Full Sibling Emotional Closeness Social Father
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