Validity

Question 1

Validity

Answer 1

How well a test measures what it is supposed to measure. More important than reliability.

Question 2

Face Validity

Answer 2

What the test appears to measure. If too obvious it can allow test takers to falsify responses.

Question 3

Content Validity

Answer 3

How well the test items relate to the skills/knowledge/behaviour/etc of interest. Gained through observation of groups who display the desired traits and expert opinion.

Question 4

Criterion-related Validity

Answer 4

A way of establishing where a person sits on a measure of interest. Can be concurrent (test score is related to objective rating made at the time of testing) or predictive (test predicts future performance on the criterion).

Question 5

Construct Validity

Answer 5

A judgement about whether the test actually measures the construct (internal consistency, pre/post test and age related changes, special population testing, convergent evidence and discriminant evidence).

Question 6

Factor Analysis

Answer 6

Method of determining construct validity. Mathematical procedures designed to group similar items into factors, however need a large sample size.