The desire to engage in an activity because we enjoy it or find it interesting, not because of external rewards or pressures.

With the use of even the tiniest amounts of which of the following drugs would a person experience extreme changes in perceptions and consciousness?

A) Alcohol B) Cocaine C) LSD D) Marijuana

Dr. Kochkodin wants to do a research study where he will be able to determine if changes in room temperature cause changes in exam score among undergraduate psychology students. What sort of research design is he most likely to use?

a. A correlational study b. An experimental study c. A case study d. Naturalistic observation