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Based on the definition of a physiological measure, explain why the team's planned measurements are classified as physiological measures. Why do these measurements serve as an operational definition in this specific context?
Case context: A team of psychological researchers is investigating how human bodies react to sudden, unexpected loud noises in a laboratory setting. They decide to operationalize the variable of 'startle response' by using physiological measures. Specifically, they plan to record the participants' electrical activity in the brain and monitor their blood pressure immediately following the presentation of the noise.
Question: Based on the definition of a physiological measure, explain why the team's planned measurements are classified as physiological measures. Why do these measurements serve as an operational definition in this specific context?
Sample answer: The team's planned measurements are classified as physiological measures because they involve recording biological processes that occur within the body, specifically blood pressure and brain electrical activity. They serve as an operational definition in this context because they take the abstract conceptual variable of 'startle response' and translate it into a specific, quantifiable biological metric that can be directly assessed.
Key points:
- Identifies that electrical activity in the brain and blood pressure are biological processes occurring within the body.
- Explains that recording these internal biological processes is what classifies them as physiological measures.
- Demonstrates comprehension that these biological recordings serve as an operational definition by quantifying the abstract variable of 'startle response'.
Rubric: A complete response should explain that the planned measures are physiological because they record internal biological processes. It should also demonstrate comprehension by explaining that these measures act as an operational definition by providing a way to quantify the abstract variable of 'startle response'.
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Research Methods in Psychology - 4th American Edition @ KPU
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