Psychological Testing Chapter 5

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Face Validity

Accepting that it is valid, although it may not be evidence based it is not validity

Construct Irrelevant Variance

Noise. The test measures more than just the construct

Validity Coefficient

The correlation coefficient that results from relating the test being evaluated w/ the criterion measurement

Predictor

Used to predict future outcome

5 Sources of Evidence

1. Based on content 2. 3. Based on internal structure 4. Based on Response Processes 5. Based on consequences of testing

Validity

A agreement between a test score or measure and the quality it is believed to measure

Convergent Evidence

Evidence showing that you're measuring the same thing

Construct Related Evidence

Exists when a test adequately represents the universe of items it is intended to sample from

Criterion Validity

If the test predicts performance of another outcome

Subjective

Includes personal feelings, own thoughts and opinions, can be more prone to unreliability and to criterion contamination

Criterion

Is the future outcome of performance

Concurrent Method

Is used to account for variability in performance on an outcome (criterion) that is measured at the same time

Objective

May be too limited, may not have a opinion, inadequately capture the construct of interest. More of a factual perspective

Discriminate (Divergent) Evidence

Measuring unrelated construct

Things you should consider when choosing variables

Objective & Subjective

Construct Under-representation

Test measures less than all aspects of the construct

Predictive Method

Test test is used to forecast performance on an outcome (criterion) that is measured at a later time

Content Validity

Whether the items on a test actually represent the domain of the test


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