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Chapter 1: Problem 9

Dr. Chen designs an experiment to study the effect of facial expressions on dating preferences. His participants see photographs of people who have a neutral facial expression or who are smiling. Dr. Chen asks participants to rate the attractiveness of each photograph. In this experiment, the participants seeing the neutral faces are the and the participants seeing the smiling faces are the a. control group; experimental group b. dependent variable; independent variable c. experimental group; control group d. independent variable; dependent variable

Short Answer

Expert verified
In Dr. Chen's experiment, the participants seeing the neutral faces are the control group, and the participants seeing the smiling faces are the experimental group. Therefore, the correct answer is: a. control group; experimental group

Step by step solution

01

Identify the given groups in the experiment

In Dr. Chen's experiment, there are two groups of participants: 1. Those who see photographs of people with neutral facial expressions. 2. Those who see photographs of people with smiling facial expressions.
02

Determine the control group

A control group is a group that is used as a baseline for comparison in an experiment. In Dr. Chen's experiment, the control group would be the group that experiences no intervention, that is, seeing photographs of people with neutral facial expressions. Therefore, the participants seeing the neutral faces are the control group.
03

Determine the experimental group

The experimental group is a group of participants that is exposed to the intervention or treatment under investigation. In Dr. Chen's experiment, the experimental group would be the group that experiences the treatment, that is, seeing photographs of people with smiling facial expressions. Therefore, the participants seeing the smiling faces are the experimental group.
04

Match the groups to the correct answer option

Now that we have identified the control and experimental groups, we need to match them with the correct answer option provided. The control group is the neutral facial expression group, and the experimental group is the smiling faces group. Therefore, the correct answer is: a. control group; experimental group

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