The theory that arose in direct opposition to psychoanalytic and behaviorist theories is

Most nerve cell fibers outside the brain and spinal cord are

wrapped by a thin layer of cells that form a "tunnel" that damaged fibers can follow as they repair themselves. This thin layer of cells is known as . Fill in the blank with correct word

V.J. suffers from obsessive-compulsive disorder. According to the biological perspective, he is likely to show ____

a. preparedness in the objects he uses for compulsive behavior b. abnormally low levels of metabolism in the locus ceruleus c. an excess of the neurotransmitter serotonin d. increased metabolic activity in the frontal lobe of the left hemisphere