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A clinical trial is designed to test a new therapy theory () by investigating the hypothesis that patients will show a 50% reduction in symptoms (). The results show that patients do not experience a 50% reduction in symptoms. Apply the formal logic of hypothesis disconfirmation to express this scenario in logical notation and state the final status of the therapy theory.
Question: A clinical trial is designed to test a new therapy theory () by investigating the hypothesis that patients will show a 50% reduction in symptoms (). The results show that patients do not experience a 50% reduction in symptoms. Apply the formal logic of hypothesis disconfirmation to express this scenario in logical notation and state the final status of the therapy theory.
Sample answer: The logic is represented as: if then ; we observe not ; therefore, we must conclude not . Consequently, the therapy theory is incorrect.
Key points:
- Applies conditional logic representing that the theory implies the hypothesis (if then ).
- Applies the empirical outcome showing the hypothesis is false (not ).
- Applies the final logical conclusion representing that the theory is incorrect (not ).
Rubric: The answer should apply the logical notation (if then , not , therefore not ) and state that the theory () is incorrect or disproved.
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Research Methods in Psychology - 4th American Edition @ KPU
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A clinical trial is designed to test a new therapy theory () by investigating the hypothesis that patients will show a 50% reduction in symptoms (). The results show that patients do not experience a 50% reduction in symptoms. Apply the formal logic of hypothesis disconfirmation to express this scenario in logical notation and state the final status of the therapy theory.