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Intro to Tests
| Term | Definition |
|---|---|
| Psychometrics | the measurement of mental traits, abilities and processes |
| Psychometricians | involved in test development in order to measure some construct/behavior that distinguishes people |
| Constructs | ideas that help summarize a group of related phenomena/objects |
| Psychological tests | include tests of abilities, interests, creativity, personality and intelligence |
| Standardization | first establishes test norms from the test results of initial sample and then ensures that the test is administered and scored uniformly |
| Norms | standard used to compare the scores of test takers |
| Reliable test | we should obtain the same score no matter where, when or how many times we take it (if other variables remain the same) |
| Test-retest method | the same exam is administered to the same group on two different occasions and the score compared (1. 0 correlation = reliable) |
| Split-half method | the score on one half of the test question is correlated with the score on the other half of the questions to see if they are consistent |
| Alternate/Equivalent form method | two different versions of a test on the same material are given to the same test takers and the scores are correlated |
| Interrater reliability | the extent to which two or more scorer evaluate the responses in the same way |
| Validity | the extent to which an instrument accurately measures or predicts what it is supposed to measure/predict |
| Face Validity | a measure of the content is testing what you're supposed to be learning (according to test takers) |
| Content Validity | a measure of the content is testing what you're supposed to be learning (according to expert judges) |
| Criterion related validity | a measure to which a test's results correlate with other accepted measures of what is being tested |
| Predictive validity | a measure to which the test accurately forecasts a specific future result |
| Construct validity | the extent to which the test actually measures the hypothetical construct or behavior it is designed to assess |