Which of the following is the psychosocial crisis of middle childhood?

Coating the neural fibers with an insulating fatty sheath during the process of _________________ improves the efficiency of message transfer.

Fill in the blank(s) with the appropriate word(s).

Which of the following is true about evolutionary psychology?

a. Natural selection works differently in humans than other animals. b. It is easy to test evolutionary hypotheses by doing experiments. c. Most social behaviors are genetically determined with little influence by the social environment. d. Evolutionary approaches can generate novel hypotheses about social behavior that can then be tested with experiments.