Reliability & Validity

Question 1

What does reliability measure?

Answer 1

Consistency of measurement.
Exam logic: Same test → same result.

Question 2

What does validity measure?

Answer 2

Accuracy — does it measure what it claims?
Exam logic: A test can be reliable but invalid.

Question 3

If a measure gives different results each time, what is the issue?

Answer 3

Low reliability.
Exam logic: Inconsistent = unreliable.

Question 4

“What type of validity asks whether a test truly measures trauma?”

Answer 4

Construct validity.
Exam logic: Concept accuracy