Use of the coombs elimination procedure in classroom tests

David A. Bradhard, Samuel B. Green

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effectiveness of the Coombs elimination procedure was evaluated with 29 college students enrolled in a statistics course. Five multiple-choice tests were employed and scored using the Coombs procedure. Specifically, students were instructed to mark incorrect rather than correct options and were informed about the scoring method, which discourages guessing. Four indices of performance were calculated to obtain specific indicants of guessing and partial knowledge. Simulated scores were calculated for each test as if the questions were administered using standard procedures. The results suggest that the Coombs procedure decreased guessing, and this effect increased over the grading period. Decreased guessing may account for modest gains in reliability in comparison to reliability of a standard test; however, the decrease from the first to final exam did not improve reliability.

Original languageEnglish (US)
Pages (from-to)68-72
Number of pages5
JournalJournal of Experimental Education
Volume54
Issue number2
DOIs
StatePublished - 1986
Externally publishedYes

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classroom
Students
grading
Research Design
student
statistics
performance

ASJC Scopus subject areas

  • Education
  • Developmental and Educational Psychology

Cite this

Use of the coombs elimination procedure in classroom tests. / Bradhard, David A.; Green, Samuel B.

In: Journal of Experimental Education, Vol. 54, No. 2, 1986, p. 68-72.

Research output: Contribution to journalArticle

Bradhard, David A. ; Green, Samuel B. / Use of the coombs elimination procedure in classroom tests. In: Journal of Experimental Education. 1986 ; Vol. 54, No. 2. pp. 68-72.
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