How does this scenario illustrate the Individual Focus Assumption of single-subject research? Explain why relying solely on the group average would lead to an incorrect conclusion about the treatment.
Case context: A clinical psychologist evaluates a new therapeutic technique for social anxiety. A group study reveals a group mean change of improvement, suggesting the therapy is ineffective. However, individual analysis reveals that the treatment was highly successful for half of the participants but significantly worsened anxiety for the other half.
Question: How does this scenario illustrate the Individual Focus Assumption of single-subject research? Explain why relying solely on the group average would lead to an incorrect conclusion about the treatment.
Sample answer: This scenario demonstrates that group research can hide individual differences by averaging them out, making it look like the treatment has no effect ( change) when it actually had strong opposing effects. The Individual Focus Assumption highlights the necessity of studying individuals directly to reveal these variations. Relying solely on the group average would lead to the false conclusion that the therapy is useless, missing the fact that it is highly beneficial for a specific subset of people.
Key points:
- Averages in group research can obscure or hide individual differences
- Opposing treatment effects (successful for some, detrimental to others) cancel each other out in the group mean
- Direct individual focus is necessary to reveal these crucial variations in treatment outcomes
Rubric: The answer should demonstrate comprehension of how group averages obscure individual variations. It must explain that the average of hides the fact that the therapy was successful for some and detrimental to others, and connect this to the necessity of studying individuals directly to see these variations.
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Research Methods in Psychology - 4th American Edition @ KPU
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