Wampold et al (1990) ​- Hypothesis Validity of Clinical Research

Question 1

What is hypothesis validity?

Answer 1

refers to the extent to which research results reflect theoretically derived predictions about the relations between or among constructs

Question 2

Theory is falsified when

Answer 2

the null hypothesis is not rejected because the obtained result is contrary to the expected result.

Question 3

What are potential reasons for the failure to reject a null hypothesis?

Answer 3

1. Type II error (chance)
2. Low power
3. Poor experimental methods
4. Unreliable variables
5. Violated assumptions
6. Incorrect formulation of theoretical implications
7. Misspecification of expected outcome

Question 4

What are threats to hypothesis validity?

Answer 4

1. Inconsequential research hypothesis
2. Ambiguous research hypothesis
3. Non-congruence of research hypothesis and statistical hypothesis
4. Diffuse statistical hypotheses and tests