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Evolutionary Social Psychology (continued) Neglect and infanticide. Adaptive? Perhaps not.

Evolutionary Social Psychology (continued) Neglect and infanticide. Adaptive? Perhaps not. Negative assays of evolved parental investment (PI) mechanisms.

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Evolutionary Social Psychology (continued) Neglect and infanticide. Adaptive? Perhaps not.

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  1. Evolutionary Social Psychology (continued) Neglect and infanticide. Adaptive? Perhaps not. Negative assays of evolved parental investment (PI) mechanisms. PI: Anything done by a parent that increases a particular offspring’s reproductive prospects at some cost to the parent’s future reproduction.

  2. Why is PI favored by selection? After all, it’s costly. Aids the perpetuation of the parent’s genes via offspring’s reproduction. So should PI be facultatively dependent on anything? 1. Offspring quality. 2. Conditions predictive of success or failure. 3. Whose offspring is it? The evil step-parent.

  3. Paternity vs Maternity Momma’s baby, Poppa’s maybe. Implications for human social organization. Who provisions moms? What do men do with their resources? How do they prefer their mates to invest? Grandmother hypothesis. Biases in investment of second-degree relatives.

  4. 1/2p 1/2

  5. 1/4 1/4p

  6. 1/2p 1/2

  7. Issues in development. While adult-stage phenotype may be seen as something of a goal, other stages must also be adaptive. Attachment / Fear of strangers Language learning Finickiness Preoccupation with social relationships

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