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  1. Optimum Level of Item Difficulty

    Author(s): Lord, Frederic M.

    Publication Year: 1953

    Source: ETS Research Memorandum

  2. Difficulty and Other Correlates of Criticalness Response Style at the Item Level

    Author(s): Stricker, Lawrence J.

    Publication Year: 1964

    Source: ETS Research Bulletin

  3. Difficulty and Other Correlates of Criticalness Response Style at the Item Level

    Author(s): Stricker, Lawrence J.

    Publication Year: 1965

    Source: Educational and Psychological Measurement, v25 n3 p683-706, 1965

  4. An Investigation of the Effect of Difficulty and Chance Success on Item-Test Correlation and on Test Reliability (Abstract of Dissertation)

    Author(s): Plumlee, Lynnette B.

    Publication Year: 1950

    Source: ETS Research Bulletin

  5. A Complexity Analysis of Items From a Survey of Academic Achievement in the Life Sciences

    Author(s): Allen, Nancy L. ; Enright, Mary K. ; Kim, Myung-In

    Publication Year: 1993

    Source: ETS Research Report

  6. An Investigation of the Relation of the Reliability of Multiple Choice Tests to the Distribution of Item Difficulties

    Author(s): Lord, Frederic M.

    Publication Year: 1951

    Source: ETS Research Bulletin

  7. Differences in Strategies Used to Solve Stem-Equivalent Constructed-Response and Multiple-Choice SAT-Mathematics Items

    Author(s): Bennett, Randy Elliot ; Berger, Aliza E. ; Friedman, Debra E. ; Katz, Irvin R.

    Publication Year: 1996

    Source: ETS Research Report

  8. An Analysis of Factors Affecting the Difficulty of Dialogue Items in TOEFL Listening Comprehension

    Author(s): DeVincenzi, Felicia ; Nissan, Susan ; Tang, K. Linda

    Publication Year: 1996

    Source: ETS Research Report

  9. Optimum Item Difficulty for a Multiple Choice Test

    Author(s): Sorum, Marilyn

    Publication Year: 1958

    Source: ETS Research Memorandum

  10. Difficulty in Grades 11 and 13 of 4,800 words from 6,000 Through 20,000 in Frequency

    Author(s): Diederich, Paul B. ; Palmer, Osmond E.

    Publication Year: 1956

    Source: ETS Research Bulletin

  11. A Comparison of Percentage of Pupillary Dilation With Other Measures of Difficulty of Mental Multiplication Items

    Author(s): Harasymiw, Stefan J. ; Parry, Mary Ellen ; Payne, Donald T.

    Publication Year: 1967

    Source: ETS Research Bulletin

  12. College Entrance Examination Board Item Difficulties of Mathematics Achievement Tests

    Author(s): Swineford, Frances

    Publication Year: 1952

    Source: ETS Research Memorandum

  13. The Relationship Between Item Difficulty and Test Validity and Reliability

    Author(s): Myers, Charles T.

    Publication Year: 1955

    Source: ETS Research Bulletin

  14. Possible Contributing Factors in Test Item Difficulty

    Author(s): Stabler, Edward P., Jr.

    Publication Year: 1986

    Source: ETS Research Memorandum

  15. Using a Neural Net to Predict Item Difficulty

    Author(s): Boldt, Robert F. ; Freedle, Roy O.

    Publication Year: 1996

    Source: ETS Research Report

  16. Effects of Prose Complexity on Achievement Test Item Difficulty

    Author(s): Scheuneman, Janice Dowd ; Gerritz, Kalle ; Embretson, Susan

    Publication Year: 1991

    Source: ETS Research Report

  17. A Theoretical Framework for the Study of Item Difficulty and Discrimination

    Author(s): Scheuneman, Janice Dowd ; Steinhaus, Karin S.

    Publication Year: 1987

    Source: ETS Research Report

  18. The Prediction of SAT Reading Comprehension Item Difficulty for Expository Prose Passages

    Author(s): Freedle, Roy O. ; Kostin, Irene W.

    Publication Year: 1991

    Source: ETS Research Report

  19. Item Difficulty and Programmed Learning

    Author(s): Jacobs, Paul I.

    Publication Year: 1961

    Source: ETS Research Memorandum

  20. The Relationship Between Item Difficulty and Test Validity and Reliability

    Author(s): Myers, Charles T.

    Publication Year: 1962

    Source: Educational and Psychological Measurement, v22 n3 p565-571, 1962

  21. Exploiting Auxiliary Information About Items in the Estimation of Rasch Item Difficulty Parameters

    Author(s): Mislevy, Robert J.

    Publication Year: 1987

    Source: ETS Research Report

  22. Item Difficulty Adjustment Study: GRE Verbal Discretes

    Author(s): Adams, Richard ; Carson, John ; Cureton, Kevin

    Publication Year: 1993

    Source: ETS Research Report

  23. Optional Use of Calculators on a Mathematical Test: Effect on Item Difficulty and Score Equating

    Author(s): Dorans, Neil J. ; Lawrence, Ida M.

    Publication Year: 1994

    Source: ETS Research Report

  24. A Note on 'Efficiency of Multiple-Choice Tests as a Function of Spread of Item Difficulties' by Lee J. Cronbach (Psychometrika,1952, 17, 127-147)

    Author(s): Lord, Frederic M.

    Publication Year: 1953

    Source: ETS Research Memorandum

  25. A Comparative Study of Curriculum Effects on the Stability of IRT and Conventional Item Parameter Estimates

    Author(s): Cook, Linda L. ; Eignor, Daniel R. ; Taft, Hessy L.

    Publication Year: 1985

    Source: ETS Research Report

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