Environment of evolutionary adaptation

The statistical composite of selection pressures that occurred during an adaptation’s period of evolution responsible for producing the adaptation.

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EEA does not refer to a specific time or place:

The key point is that the EEA does not refer to a specific time or place but rather to the selection forces that are responsible for shaping adaptations. Therefore, each adaptation has its own unique EEA. The adaptation’s period of evolution refers to the time span during which it was constructed, piece by piece, until it came to characterize the universal design of the species. —p33, Evolutionary psychology