Exam 4: Validity and Item Analysis

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Using decision theory, both expectancy tables and group separation help to determine:

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B

One fundamental assumption of item response theory is that each item is constructed so that it measures only one trait or ability. This assumption is known as:

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D

If an instrument measures consistently but does not measure what it was designed to measure, the instrument is:

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B

In the equation Y' = a + b X, the b represents the:

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Briefly explain the basis of item response theory.  How does it differ from classical test theory?  What are some of the benefits and challenges to each of these theories?  Are there times when one would be more appropriate to employ than the other?  What are item characteristic curves, and what information can they provide?

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An important parameter in item response theory is the slope of the curve, which is an indicator of how well the item discriminates.  If there is a ________  slope then the item is probably a good discriminator ,whereas a ________ slope probably indicates the item does not discriminate very well.

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An example of gathering evidence based on response processes is:

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The standard error of estimate is an index of the:

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Standard error of measurement is to standard error of estimate as:

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Validity evidence is to ________ as item analysis is to ________.

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Of the three historical types of validation evidence, which one is believed by many experts to be the most pertinent with assessments used by counselors?

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A low, non-significant correlation between an observation-based assessment of symptoms of autism and a teacher-report of ADHD symptoms provides ______________________ evidence of the validity of the autism measure.

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There are many methods of gathering construct validity information.  Briefly discuss each process and its advantages and disadvantages: convergent and discriminant evidence; multitrait-multimethod matrix; factor analysis; meta-analysis; correlational method; regression.

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In evaluating an instrument's validity, practitioners should:

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The higher the item difficulty index (i.e., 0.00 to 1.00), the ________ the item.

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When we use Expectancy Tables, hit is to ________ as miss is to _________ .

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Validity is explained as the gradual accumulation of evidence that indicates how an instrument can be used and what can be inferred from the results.  What does this mean for the use of newly-developed instruments that have not existed long enough for evidence of validity to accumulate?

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The difference between concurrent and predictive validity is whether the:

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The most comprehensive type of validity that incorporates a gradual accumulation of evidence is __________ validity.

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In appraisal, regression equations are most frequently used to:

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