3.2 Experimental Design Considerations

Question 1

What is external validity?

Answer 1

flaw or limitation that might make it difficult to apply the conclusion to the real world

Question 2

What is internal validity?

Answer 2

limitation of a study such that the experiment is not well done leaving doubts about the conclusion because of inherent design flaws

Question 3

When is predictive validity used?

Answer 3

psychometric evaluations

Question 4

What are the threats to internal validity?

Answer 4

Impression management
Confounding variables
Lack of reliability
Sampling bias
Attrition effects
Demand characteristics

Question 5

What are the threats to external validity?

Answer 5

Experiment doesn’t reflect the real world
Selection criteria
Situational effects
Lack of statistical power