Alcohol is the most commonly used psychoactive drug

What unit of measurement is used to report the size of light waves (wavelengths)?

a) decimeters b) nanometers c) centimeters d) millimeters

How did Latané and Darley (1968) vary the number of bystanders in their experimental study of the effects of the number of witnesses exposed to an emergency?

a. They allowed participants to choose whether to participate in a group or in a one-on-one discussion. b. They asked participants whether they would like to be engaged in a discussion with one, three, or six other individuals. c. Participants who arrived first were assigned to a large group condition, and those who arrived later were assigned to a small group condition. d. They randomly assigned participants to one of three conditions: several witnesses, few witnesses, or one witness.