Messages are transmitted from one neuron to other neurons by means of chemical messengers called

Object permanence is the awareness that objects continue to exist even when we are not in direct sensory or motor contact with them.

a. true b. false

Gregory experiences irrational fear when he is in high places, such as an elevator or on a bridge. Most likely, Gregory is suffering from which of the following?

A) Bi-polar disorder B) A phobia C) A mood disorder D) Depression