Independent and Dependent Variables Which of the following could serve as a subject variable in an ex post facto study?
A)drug dosage
B)level of illumination
C)noise level
D)visual acuity

Question

Quizplus · Accepted Answer

A subject variable refers to a characteristic or trait inherent in the participants, which cannot be manipulated by the researcher. Among the options given, visual acuity is the only characteristic that cannot be altered by the researcher and is an inherent trait of the participants. The other variables listed are environmental factors that can be manipulated by the researcher and are therefore not subject variables.

Independent and Dependent Variables Which of the Following Could Serve