What Is Internal Validity and How Is It Related to Confounding

question 468

Essay

What is internal validity and how is it related to confounding variables and experimenter expectancies? In your discussion, define each of these concepts. What is the difference between internal validity and external validity? Give a hypothetical example of: 1) a study with poor internal validity, and 2) a study with poor external validity.

---

Definitions:

Donald Super

A psychologist known for his theories on career development and the concept of life-span, life-space approach to career development.

Developmental Model

A theoretical framework outlining the sequence and nature of developmental changes in individuals over time.

Nancy Betz

A psychologist noted for her work in the area of career development, especially focusing on career assessment and counseling.

Clinical Psychologist

A professional specializing in diagnosing and treating mental disorders and psychological problems through therapy.