A COMPARISON OF SEVERAL ITEM DISCRIMINATION INDICES1

@article{Engelhart1965ACO,
  title={A COMPARISON OF SEVERAL ITEM DISCRIMINATION INDICES1},
  author={Max Dissette Engelhart},
  journal={Journal of Educational Measurement},
  year={1965},
  volume={2},
  pages={69-76}
}
  • M. D. Engelhart
  • Published 1 June 1965
  • Education
  • Journal of Educational Measurement
The item discrimination indices compared in this study include tetrachoric coefficients of correlation, phi or fourfold point correlation coefficients, biserial coefficients, point biserial coefficients, Davis discrimination indices, and simple differences in proportions of correct response between upper and lower groups given the symbol "D." The tetrachoric coefficients, the phi coefficients, and the D indices were secured for test samples both divided at the median total score and into… 

A Comparison of Biserial Discrimination, Point Biserial Discrimination, and Difficulty Indices in Item Analysis Data

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Assessing the performance of classical test theory item discrimination estimators in Monte Carlo simulations

The performance of various classical test theory (CTT) item discrimination estimators has been compared in the literature using both empirical and simulated data, resulting in mixed results regarding

Assessing the performance of classical test theory item discrimination estimators in Monte Carlo simulations

The performance of various classical test theory (CTT) item discrimination estimators has been compared in the literature using both empirical and simulated data, resulting in mixed results regarding

A Monte Carlo Comparison of Ten Item Discrimination Indices.

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The indices of discrimination determined for items in multiple choice examinations are known to be spuriously inflated (biased), due to their part-whole correlation. The magnitude of this bias for

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A Note on Comparing r-Biserial and r-Point Biserial

HIGH correlation has been reported (Engelhart, 1965; Aleamoni and Spencer, 1969) between r-point biserial and r-biserial item selection indices; the implication is that use of either index in typical

A reappraisal of the use of the phi‐coefficient in multiple choice examinations

  • J. H. KOESLAGS. R. SCHACHC. W. Melzer
  • Education
    Medical education
  • 1987
The behaviour of the phicoefficient (ø) was investigated in two one‐from‐five MCQ and two true/false examinations and it is shown that the magnitude of the ø‐coefficient for the items in any examination is a function not only of the discriminating power of the items, but also of the magnitudeof the countermark for incorrect responses.

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