For a Within-Subjects Experiment,one of the Primary Threats to Internal

question 30

Multiple Choice

For a within-subjects experiment,one of the primary threats to internal validity is ____.

• A)​individual differences that may exist within treatment conditions
• B)​individual differences that may exist between treatment conditions
• C)the risk that participation in one treatment condition may influence scores in other treatment conditions
• D)​the risk that one (or more) of the treatment conditions will have no influence on the participants' scores

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Definitions:

Physical Activity

Any bodily movement produced by skeletal muscles that requires energy expenditure, ranging from more sedentary activities to vigorous exercise.

Arthritis

A group of painful, inflammatory conditions affecting joints and connective tissues, leading to stiffness and decreased range of motion.

Damage

Physical harm caused to something in such a way that it is impaired or its value is diminished.

Good

Describes something as being satisfactory, beneficial, or morally right.