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Based on Robert Abelson's defense of null hypothesis testing, explain why this statistical framework is particularly vital for Dr. Vance in this specific situation, and what she is attempting to demonstrate to her skeptical colleagues.
Case context: Dr. Vance has discovered a highly unexpected cognitive phenomenon she calls 'perceptual rebound,' where individuals report seeing an image in reverse colors after staring at it under specific conditions. Because this is a brand-new phenomenon, her department colleagues are extremely skeptical of her initial observations. Dr. Vance wants to use null hypothesis testing to analyze her experimental data before presenting it to her peers.
Question: Based on Robert Abelson's defense of null hypothesis testing, explain why this statistical framework is particularly vital for Dr. Vance in this specific situation, and what she is attempting to demonstrate to her skeptical colleagues.
Sample answer: According to Robert Abelson, null hypothesis testing is vital in this situation because 'perceptual rebound' is a new phenomenon. The framework provides a systematic way for Dr. Vance to present a 'principled argument' showing that her results are not mere chance occurrences, which is necessary to convince her skeptical colleagues of the phenomenon's existence.
Key points:
- Recognizes that the scenario involves investigating a new phenomenon.
- Explains that null hypothesis testing functions as a 'principled argument' in this context.
- Explains that the framework allows the researcher to show that results are not mere chance occurrences.
- Connects the framework's use to the goal of convincing skeptical colleagues of the new findings.
Rubric: The response must explain that because Dr. Vance is investigating a new phenomenon, null hypothesis testing serves as a principled argument to demonstrate that the findings are not due to chance, thereby providing a systematic way to convince skeptical peers.
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Research Methods in Psychology - 4th American Edition @ KPU
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