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Explain the pathway by which the administration of an inert, simulated treatment can ultimately lead to improved physiological functions, such as enhanced immune system functioning.
Question: Explain the pathway by which the administration of an inert, simulated treatment can ultimately lead to improved physiological functions, such as enhanced immune system functioning.
Sample answer: The administration of an inert treatment can lead to physiological improvements through the placebo effect, which is driven by a participant's psychological expectation of getting better. This positive expectation can autonomously reduce negative states like stress, anxiety, and depression, which subsequently alters perceptions and enables improvements in physiological processes like the immune system.
Key points:
- Mentions the administration of an inert or simulated treatment.
- Identifies psychological expectation of improvement as the catalyst.
- Notes the reduction of stress, anxiety, or depression.
- Explains that this psychological change leads to altered perceptions and physiological improvements.
Rubric: A correct response should demonstrate understanding of the causal chain: receiving the simulated treatment creates an expectation of improvement, which reduces stress/anxiety, and this psychological shift causes the physiological enhancement.
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Research Methods in Psychology - 4th American Edition @ KPU
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Example of the Placebo Effect in a Drug Trial
A research team is studying the effectiveness of a new herbal supplement designed to enhance concentration. One group of participants receives the actual supplement, while a second group receives a pill that looks identical but contains only an inert substance. After one week, both groups show a significant improvement in their ability to concentrate on a difficult task. Which psychological principle best explains the improvement observed in the group that received the inert pill?
Double-Blind Study
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Explain the pathway by which the administration of an inert, simulated treatment can ultimately lead to improved physiological functions, such as enhanced immune system functioning.