5 197-210

Which of the following is true of alcohol?

In large doses, it is a depressant; in small doses, it is a depressant.

After ingesting a small dose of a psychoactive drug, Laqueta experienced vivid visual hallucinations and felt as if she were separated from her own body. Laqueta most likely experienced the effects of

LSD.

Which drugs are most likely to be prescribed as tranquilizers?

barbiturates

When cocaine is snorted, free-based, or injected, it produces a rush of euphoria by

blocking the reuptake of dopamine

THC, the active ingredient in ________, is classified as a ________.

marijuana; hallucinogen

The change in brain chemistry that offsets the effects of a psychoactive drug is called

neuroadaptation

Adopted individuals are more susceptible to alcohol dependence if one or both biological parents have a history of it. This indicates that alcohol dependence is

genetically influenced

Research on the use of addictive drugs indicates that

individuals who are given morphine for pain relief seldom develop the irresistible cravings of an addict.

The British government classifies the highly addictive crystallized form of ________ as one of the most dangerous of drugs.

methamphetamine

Unpleasant withdrawal symptoms are indicative of

physical dependence

Chemical substances that alter perceptions and moods are called ________ drugs.

psychoactive

Participants in a sexual stimulation study who mistakenly thought they had consumed alcohol were more likely to report having strong sexual fantasies and feeling guilt-free than those who thought they had not consumed alcohol. This study best illustrated the impact of

user expectations