![]() ![]() Ultimately, it's the overall pattern of correlations that provides convincing (or unconvincing) evidence of a test's construct validity. usually requires a series of studies that examine the correlations between the test and various measures related to the trait in question. construct validity-the extent to which there is evi- dence that a test measures a particular hypothetical construct. If your test has reasonable validity, there ought to be a reason- ably strong positive correlation between the test and the criterion measure. Consulting the Table of Areas of the Normal Curve in Appendix C, for a z value of 2.78, we find that the area in the smaller portion that is cut off. The performance ratings would be the independent criterion of pilot aptitude. To determine the statistical significance of the obtained score difference of 5 points, we divide that difference by the SEdiff and obtain a critical value of 5/1.80 2.78. Criterion-related validity is estimated by correlating subjects' scores on a test with their scores on an independent criterion (another measure) of the trait assessed by the test. Content validity is evaluated with logic more than with statistics. Content validity refers to the degree to which the content of a test is representative of the domain it's supposed to cover. Achievement tests and educational tests such as class- room exams should have adequate content validity. (no set standards) Validity refers to the ability of a test to measure what it was designed to measure. Most reliability coefficients fall between 0.70 and 0.95. Reliability estimates require the computation of correlation coefficients. One widely used approach is to check test-retest reliability, which is estimated by comparing subjects' scores on two administrations of a test. intelligence, attitudes, personality, interests, etc. A device or procedure designed to measure variables related to psychology (e.g. Reliability refers to the measurement consistency of a test (or of other kinds of measurement techniques). Terms in this set (57) Psychological Tests. ![]()
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