Validity Flashcards
(48 cards)
It is a judgment based on evidence about the appropriateness of inferences drawn from test scores
Validity
Validation process if test users plan to alter format, instruction, language or content of the test
Local validation
Trinatarian view
Content, criterion, construct validity
Judgment concerning how relevant a test items appear to be
Face validity
How adequately a test samples behavior representative of the universe of behavior that the test was designed to sample; coverage, course syllabus, curricula
Content validity
A plan regarding the types of info to be covered by the items the numbers of items tapping each area of coverage, organization of items and so forth
Test blueprint
Manage creation of new items and the output of old items in a manner that is consistent with the test’s blueprint
item pool management
In quantifying content validity, this is used to gauge agreement among raters or judges regarding how essential a particular item is
Lawshe content validity ratio (CVR)
Negative=fewer than half the panelists indicate item is essential
Zero= exactly half the panelists indicate essential
Positive=more than half but not all panelists indicate essential item
Content Validity ratio
Judgment of how adequately a test core can be used to infer an individual’s most probable standing on some measure of interest
Criterion-related validity
A criterion must be ___, ___, and ___.
relevant, valid and uncontaminated
Happens when criterion overlap with predictor measures
Criterion contamination
Test scores are obtained about the same time criterion measures are obtained; also used to compare tests with different versions
Concurrent validity
How accurately scores on a test predict some criterion measure
predictive validity
Correlation coefficient that provides a measure of the relationship between test scores and scores on the criterion measure
Validity coefficient
Degree to which an additional predictor explains something about the criterion measure that is not explained by predictors already in use
Incremental validity
Provide info that can be used in evaluating criterion-related validity of a test
Expectancy data
Likelihood that testtaker will score within somwe interval of scores on a criterion measure (an interval that may be seen as “passing or acceptable”
Expectancy table
Provide an estimate of the percentage of employess by the use of a particular test who will be successful at their jobs.
Taylor-russel tables (comprises test’s validity, selection ratio, base rate)
Numerical value that reflects relationship between number of people to be hired and number of people available to be hired
Selection ratio
Percentage of people hired under the existing system for a particular position
Base rate
Limitations of the Taylor-Russel table
- cannot distinguish differences between successful from unsuccessful employees
- relationship between predictor and criterion must be linear
Obtain difference between the means of the selected and unselected groups to derive an index of what the test is adding to the already established procedures
Naylor-Shine table
Provide an estimate of the extent to which inclusion of a particular test in the selection system will actually improve selection
Taylor-Russel tables