Wallace Craig’s “Appetites and Aversions as Constituents of Instincts, ” one of the seminal articles in animal behavior, comparative psychology, and ethology, appeared 100 years
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The Institute wants the world to know:
A) Playing, being playful, is the healthiest way to spend your time (after feeding and housing yourself).
B) The activities that evoke playful feelings are unique to each of us.
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