Standardized Testing Norm-referenced tests : are standardized, have information about reliability and validity, and can be used to compare an individual or groups performance on a test to individuals or groups in the standardization population, often called a “formal” test.
Percentile rank-derived scores that permit us to determine an individual’s position relative to the sample.
Standard scores- raw scores that have been transformed to have a designated mean and standard deviation.
Grade equivalent or age-equivalent scores-average score obtained on a test by different groups of children who vary in age or grade placement.
Normal curve equivalents- standard scores with a mean of 100 and a standard deviation of 21.06
Stanines-a single digit scoring system with a mean of 5 and a SD of 2. (1-9)
Test-retest reliability - consistency of scores on two separate administrations of a test.
Alternate-form reliability- consistency of scores on two equivalent forms of a test.
Split-half reliability – degree to which individual test items are related or measure the same abilities.
Content validity -whether the items on a test
represent the domain that the test is supposed to
Criterion-related validity- the relationship
between test scores and some type of criterion or
Concurrent validity and predictive validity –are test scores related to a current criterion or future performance on a relevant criterion?
Construct validity – the extent to which a test measures a psychological construct.
Function or Domain
National, State and Local Levels: