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While there is relatively little research on the reliability and validity of the SLUMS exam, available studies suggest that it exhibits high sensitivity (greater than 95%) and specificity (greater than 95%) in differentiating between individuals with normal cognition from those with dementia. [3]
Test validity is the extent to which a test (such as a chemical, physical, or scholastic test) accurately measures what it is supposed to measure.In the fields of psychological testing and educational testing, "validity refers to the degree to which evidence and theory support the interpretations of test scores entailed by proposed uses of tests". [1]
Unfortunately, there is no way to directly observe or calculate the true score, so a variety of methods are used to estimate the reliability of a test. Some examples of the methods to estimate reliability include test-retest reliability, internal consistency reliability, and parallel-test reliability. Each method comes at the problem of ...
The BRIEF has demonstrated good reliability, with high test-retest reliability (rs ≈ .88 for teachers, .82 for parents) internal consistency (Cronbach's alphas ≈ .80 – .98), and moderate correlations between parent and teacher ratings (rs ≈ .32 – .34). Evidence for the convergent and divergent aspects of the BRIEF's validity comes ...
E.g. a scale that is 5 pounds off is reliable but not valid. A test cannot be valid unless it is reliable. Validity is also dependent on the measurement measuring what it was designed to measure, and not something else instead. [6] Validity (similar to reliability) is a relative concept; validity is not an all-or-nothing idea.
Related: Patient Dies After Hospital Asks Wrong Family About Removing Life Support If the amount of beds aren’t increased, researchers estimate that, given the “aging population ...
Reliability is supposed to say something about the general quality of the test scores in question. The general idea is that, the higher reliability is, the better. Classical test theory does not say how high reliability is supposed to be. Too high a value for , say over .9, indicates redundancy of items.
The 2014 edition is the 7th edition of The Standards, and it shares the exact same names as the 1985 and 1999 editions. [3] Technical recommendations for psychological tests and diagnostic techniques: A preliminary proposal (1952) and Technical recommendations for psychological tests and diagnostic techniques (1954) editions were quite brief.