A psychologist in a laboratory is studying participants' perceptions of the attractiveness of several perfume odors. However, as he conducts his study, people are cooking their lunches in the break room next door, and the smell of onions and fish is making its way into the lab. He should cease his experiment for the day because the food smell is most likely __________.

Question

Quizplus · Accepted Answer

The food smell is a confounding variable because it is an external influence that could affect the outcome of the experiment (participants' perceptions of perfume attractiveness) in an uncontrolled way.

A Psychologist in a Laboratory Is Studying Participants' Perceptions of the Attractiveness