Brief problem-solving questions in medical school examinations: is it necessary for students to explain their answers?

Abstract:

OBJECTIVE:To compare outcomes when answers to objective type problem-solving questions are marked with and without consideration of students' explanations of their answers. DESIGN:Students answered six multiple-part problem-solving questions on the final examination for a course in clinical biochemistry. Each part required a choice from a list, a number or a few words, plus an explanation or justification. Scores were determined independently for the answers alone and for the answers plus explanations. The outcomes of the two marking methods were compared. SETTING:Department of Pathology, University of Otago Medical School, Dunedin, New Zealand. SUBJECTS:Final year preclinical medical students. RESULTS:Marks were slightly higher for answers alone than for answers plus explanations (overall mean, 82.1%; standard deviation, 9.8% vs. 77.1%; 9.3%; P < 0.001 by paired t-test). There was a very high correlation between scores derived from the two methods (r=0. 87). Consideration of the answers alone (without explanations) was about as good as answers plus explanations in identifying students who performed at different levels overall on the examination and in identifying the weakest students. CONCLUSIONS:The data suggest that when students arrived at the correct answers, their information and reasons were usually correct and that answers alone discriminate adequately among students with different levels of knowledge and ability. By dispensing with the requirement for explanations, we would be able to ask more questions and mark objectively, so competent students should not be disadvantaged by the lack of opportunity to explain their reasoning.

journal_name

Med Educ

journal_title

Medical education

authors

Schwartz PL,Loten EG

doi

10.1046/j.1365-2923.1999.00382.x

keywords:

subject

Has Abstract

pub_date

1999-11-01 00:00:00

pages

823-7

issue

11

eissn

0308-0110

issn

1365-2923

pii

med382

journal_volume

33

pub_type

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