According to Piaget, during their first year, infants develop ________, the understanding that an object continues to exist even when you cannot see it or touch it

Chronic exposure of postsynaptic receptors to agonists commonly produce _________________ of the receptors

a. desensitization b. down-regulation c. up-regulation d. either a or b

Women taking anabolic steroids sometimes show clitoral enlargement

a. True b. False Indicate whether the statement is true or false