The release of stored serotonin and the eventual damage of serotonin-producing neurons is most closely associated with the long-term use of

A) alcohol.
B) Ecstasy.
C) morphine.
D) barbiturates.

Which term means knowledgeable, rational, and voluntary agreement from study participants?

A) beneficence
B) informed consent
C) autonomy
D) verbal consent

Which gland(s) is (are) stimulated by sympathetic excitation?

A) the pituitary gland
B) the adrenal gland
C) the lymph gland
D) the smooth glands of the autonomic nervous system

When Brett was 6 years old,his older sister hid in his closet,then unexpectedly jumped out and scared him when he came into his dark bedroom.Brett is still terrified of the dark even as an adult.Based on principles of classical conditioning,what is Brett's fear of the dark

A)  a result of counterconditioning 
B)  an unconditioned response 
C)  a conditioned response 
D)  a result of observational learning

Which of these pairs is a concept followed by one of its referents?

A) oxygen, element
B) DVD, videotape
C) tool, my screwdriver
D) rock and roll, country
E) roller coaster, amusement park ride

When people hear a sound,they can tell its location.For example,after hearing a whistle blown,a person could tell you whether the sound originated from his or her right or left side.Likewise,a person could tell you whether the sound came from above or below him or her.How can humans do this? Explain how humans are able to locate where a sound originates.