AP Psychology Practice Test 2025 - Free AP Psychology Practice Questions and Study Guide

Question: 1 / 530

What is LSD also known as?

Morphine

Speed

Acid

LSD is commonly recognized by the nickname "Acid." This term is widely used in popular culture and among those who use the drug, stemming from its chemical name, lysergic acid diethylamide. The psychoactive effects of LSD include profound alterations in perception, mood, and thought processes, which has contributed to its association with the counterculture movements of the 1960s and 1970s.

The other options refer to different substances. Morphine is an opiate used primarily for pain relief, Speed usually refers to amphetamines, which are stimulants, and barbiturates are a class of sedative medications. Understanding the distinct classifications of these substances is crucial in psychology, as each affects the brain and body in varying ways. This is part of why recognizing "Acid" as a nickname for LSD is important in distinguishing it from other drugs.

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Barbiturate

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