Lecture 3D: External Validity

Question 1

What is external validity also called?

Answer 1

Generalizability

External validity refers to the applicability of study results beyond the specific context of the study.

Question 2

What does external validity concern?

Answer 2

The usefulness of the information outside the experimental situation

This concept emphasizes the importance of applying research findings to real-world scenarios.

Question 3

What three factors influence external validity?

Answer 3

• The characteristics of subjects in the study
• Study environment
• History

Question 4

What historical factor can influence external validity?

Answer 4

The time period of the study
Findings from studies conducted decades ago may not be relevant today.

Question 5

How does internal validity typically relate to external validity?

Answer 5

As internal validity improves, external validity weakens
Increased control in a study often limits generalizability.

Question 6

What is the impact of a homogeneous sample on external validity?

Answer 6

It decreases external validity
Similar characteristics among subjects can restrict the generalization of findings.