Psychology I / Parental Care and Conflict
Practice question · Multiple choice

Parent-offspring conflict theory predicts weaning disputes even though both parties want the offspring to survive. Why does shared interest not prevent the conflict?

Hints
  1. Write down the relatedness of the offspring to itself and to a future sibling.
  2. Both want survival, the disagreement is about how much.
Show the answer

B. Because it is related to itself by 1 and to a sibling by 1/2

Why

Trivers' insight is that partial genetic overlap gives partially overlapping interests. The parent is equally related to all its offspring; each offspring is not, so they disagree about when investment should stop.

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