Which of the following is an example of a participant variable?

Name: Which of the following is an example of a participant variable?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Intelligence is a characteristic or trait of the participant that can potentially influence the outcome of the study. Investigator bias is a potential confounding variable, temperature and time of day may influence the outcome but are environmental variables, and noise is a stimulus variable.

Which of the Following Is an Example of a Participant