Alejandro has noticed personality differences between his Af…

Alejandro has noticed personality differences between his African-American and Asian-American friends. He is interested in how much of the difference is influenced by their genetics and how much is influenced by environment. In this instance, he is addressing the ____________ issue.

Catalina ate a candy bar and then went on a fast-moving ride…

Catalina ate a candy bar and then went on a fast-moving ride in an amusement park. She was sick to her stomach after the ride and now, Catalina cannot eat candy bars, because they make her nauseous. In this learned association, the candy bar serves as a(n) ________ to Catalina.

Juan, a psychologist, is studying participants’ perceptions…

Juan, a psychologist, is studying participants’ perceptions of the attractiveness of several deodorants in a laboratory. However, as he conducts his study, people are cooking their lunches in the cafeteria nearby, and the smells of onions and fish are making their way into the laboratory. Juan should stop his experiment for the day because the odors of the food is most likely a __________.