Environment of Evolutionary Adaptedness

In xenology and sociobiology, the environment of evolutionary adaptedness (EEA) is the original environment under which a sapient species developed. Its conditions exert a large degree of influence upon the species' sociobiology due to the sheer length of time it spends in this state (tens of thousands to hundreds of thousands of years) before branching out to the rest of its homeworld and rising to technology.

For instance, a species developing in an environment of food scarcity may develop a biology better suited for energy conservation, and a psychology with a strong sense of territoriality and competition.

Artificially-engineered sapients, like uplifts and posthumans have no EEA and can be "designed" with psychologies unlikely to exist in nature.