pbsi 301

Test-Retest Reliability

The degree to which a person receives the same score when completing a measure at two different points in time.

Parallel Forms Reliability

The equivalence of different versions of the same measure.

Internal Consistency

The consistency of items in a measure assessing the same concept; indicates strong correlation between individual items and total scores.

Cronbach's Alpha

A statistic reflecting the degree of internal consistency of items, ranging from 0 to 1, where closer to 1 indicates better reliability.

Inter-rater Reliability

The consistency of results produced by different raters using the same measure.

Content Validity

The extent to which a measure covers all facets of the construct being assessed.

Criterion Validity

The ability of a measure to predict other indicators of the same construct.

Concurrent Validity

The correlation between a new measure and pre-existing measures that have been validated.

Predictive Validity

The ability of a measure to predict outcomes in the future.

Construct Validity

The degree to which a measure reflects the theoretical concept it is intended to measure, and its relationship with unrelated constructs.

Convergent Validity

The extent to which a measure relates to other constructs that it should be related to.

Discriminant Validity

The extent to which a measure does not relate to constructs that it should not be related to.