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A psychologist is designing a within-subjects experiment to compare how two different styles of music (Classical vs. Jazz) affect task performance. Describe how the psychologist would apply counterbalancing to assign 60 participants to the two experimental conditions.
Question: A psychologist is designing a within-subjects experiment to compare how two different styles of music (Classical vs. Jazz) affect task performance. Describe how the psychologist would apply counterbalancing to assign 60 participants to the two experimental conditions.
Sample answer: To apply counterbalancing, the psychologist should split the 60 participants into two groups. Half of the participants (30) will complete the Classical music condition first and then the Jazz music condition, while the other half (30) will complete the Jazz music condition first and then the Classical music condition.
Key points:
- Varying the sequence of conditions for different participants.
- Assigning half of the participants to one sequence (Classical then Jazz) and the other half to the opposite sequence (Jazz then Classical).
- Systematic assignment of participants to neutralize order effects.
Rubric: The response must apply counterbalancing to the two music conditions by specifying that some participants complete Classical first then Jazz, while others complete Jazz first then Classical.
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Research Methods in Psychology - 4th American Edition @ KPU
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