A fatty substance that is wrapped around the shaft of axons in the nervous system and whose function is to insulate neurons and speed up the neural impulse is called a __________

Research has found that there are several characteristics of youngsters that predict higher levels of aggressive behavior. These include all but which of the following?

a. they are temperamentally difficult b. they are devoted to their religion c. they are overly emotional d. they are inattentive

In reviews of cross-cultural research on Piaget’s sensorimotor stage of development, Dasen and Heron (1981) and Werner (1979) conclude that

a. in many African cultures, children develop object permanence earlier than they do in most Western cultures. b. in many Western cultures, children develop object permanence earlier than they do in most African cultures. c. in many cultures, children do NOT experience a sensorimotor stage. d. in sensorimotor development, there are more similarities across cultures than there are differences.