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Simulation Study of Item Validity Testing and Item Discrimination Index [PDF]

Proceeding of the Electrical Engineering Computer Science and Informatics, 2014
In psychology or educational research, we often want to test the validity of our instrument. Usually we use the Pearson coefficient of correlation in validity testing. However, the distribution of the data are not always normal distribution so it is also possible to use the Spearman and Kendall coefficient of correlation to test the validity of items ...
Adi Setiawan
exaly   +4 more sources

Item Validity vs. Item Discrimination Index: A Redundancy?

Journal of Physics: Conference Series, 2018
In several literatures about evaluation and test analysis, it is common to find that there are calculations of item validity as well as item discrimination index (D) with different formula for each. Meanwhile, other resources said that item discrimination index could be obtained by calculating the correlation between the testee's score in a particular ...
Nurdinah Hanifah
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Relationships Between the Item Difficulty and Discrimination Indexes

Educational and Psychological Measurement, 1979
The dependence of the item discrimination index (D) on the item difficulty index ( p), and the relationship of D and p to the phi coefficient (ϕ) are delineated. A table of critical values of D for significance at the .10 and .05 levels, with the number of examinees in the upper group (n, ) on total test score ranging from 10 to 25
Lewis R Aiken
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Two Generalizations of the Item Discrimination Index to Multi-Score Items

Journal of Experimental Education, 1971
Two general item analysis indices which apply to multi-score items are developed as generalizations of a popular index applicable to dichotomous items. The indices of discrimination are of two types: one based on differential difficulty and the other on net number of positive discriminations. The usefulness and limitations of each are discussed.
Darrell L Sabers
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An Attribute-Specific Item Discrimination Index in Cognitive Diagnosis

Springer Proceedings in Mathematics and Statistics, 2019
There lacks an item quality index as a measure of item’s correct classification rates of attributes. The purpose of this study is to propose an attribute-specific item discrimination index as a measure of correct classification rate of attributes based on a q-vector, item parameters, and the distribution of attribute patterns.
Lihong Song, Wenyi Wang
exaly   +2 more sources