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Identify Experimental and Control Groups
Grade Level
AP Psychology
AP.020 Identify Experimental and Control Groups
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A lab tests whether wearing a name tag that says 'helper' changes cooperative behavior. Participants are randomly assigned to wear the helper tag or a blank tag. Which statement correctly identifies the groups and assignment purpose?
A
The blank-tag group is the experimental group, the helper-tag group is the control group, and assignment makes the label socially meaningful.
B
The helper-tag group is the experimental group, the blank-tag group is the control group, and assignment helps balance cooperative tendencies before the label manipulation.
C
Both tag groups are experimental groups because both wear tags, and assignment mainly hides the study purpose.
D
Participants who cooperate are the experimental group, participants who do not are the control group, and assignment is determined by behavior.
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