scholarly journals The Effect of Two Scoring Methods on Multiple Choice Agricultural Science Test Scores

2012 ◽  
Vol 4 (1) ◽  
Author(s):  
B. K. Ajayi ◽  
M. S. Omirin
2018 ◽  
Vol 23 (2) ◽  
pp. 342-366 ◽  
Author(s):  
Jiyun Zu ◽  
Patrick C. Kyllonen

We evaluated the use of the nominal response model (NRM) to score multiple-choice (also known as “select the best option”) situational judgment tests (SJTs). Using data from two large studies, we compared the reliability and correlations of NRM scores with those from various classical and item response theory (IRT) scoring methods. The SJTs measured emotional management (Study 1) and teamwork and collaboration (Study 2). In Study 1 the NRM scoring method was shown to be superior in reliability and in yielding higher correlations with external measures to three classical test theory–based and four other IRT-based methods. In Study 2, only slight differences between scoring methods were observed. An explanation for the discrepancy in findings is that in cases where item keys are ambiguous (as in Study 1), the NRM accommodates that ambiguity, but in cases where item keys are clear (as in Study 2), different methods provide interchangeable scores. We characterize ambiguous and clear keys using category response curves based on parameter estimates of the NRM and discuss the relationships between our findings and those from the wisdom-of-the-crowd literature.


Author(s):  
Tomoharu Iwata ◽  
Tomoko Kojiri ◽  
Takeshi Yamada ◽  
Toyohide Watanabe
Keyword(s):  

Author(s):  
David DiBattista ◽  
Laura Kurzawa

Because multiple-choice testing is so widespread in higher education, we assessed the quality of items used on classroom tests by carrying out a statistical item analysis. We examined undergraduates’ responses to 1198 multiple-choice items on sixteen classroom tests in various disciplines. The mean item discrimination coefficient was +0.25, with more than 30% of items having unsatisfactory coefficients less than +0.20. Of the 3819 distractors, 45% were flawed either because less than 5% of examinees selected them or because their selection was positively rather than negatively correlated with test scores. In three tests, more than 40% of the items had an unsatisfactory discrimination coefficient, and in six tests, more than half of the distractors were flawed. Discriminatory power suffered dramatically when the selection of one or more distractors was positively correlated with test scores, but it was only minimally affected by the presence of distractors that were selected by less than 5% of examinees. Our findings indicate that there is considerable room for improvement in the quality of many multiple-choice tests. We suggest that instructors consider improving the quality of their multiple-choice tests by conducting an item analysis and by modifying distractors that impair the discriminatory power of items. Étant donné que les examens à choix multiple sont tellement généralisés dans l’enseignement supérieur, nous avons effectué une analyse statistique des items utilisés dans les examens en classe afin d’en évaluer la qualité. Nous avons analysé les réponses des étudiants de premier cycle à 1198 questions à choix multiples dans 16 examens effectués en classe dans diverses disciplines. Le coefficient moyen de discrimination de l’item était +0.25. Plus de 30 % des items avaient des coefficients insatisfaisants inférieurs à + 0.20. Sur les 3819 distracteurs, 45 % étaient imparfaits parce que moins de 5 % des étudiants les ont choisis ou à cause d’une corrélation négative plutôt que positive avec les résultats des examens. Dans trois examens, le coefficient de discrimination de plus de 40 % des items était insatisfaisant et dans six examens, plus de la moitié des distracteurs était imparfaits. Le pouvoir de discrimination était considérablement affecté en cas de corrélation positive entre un distracteur ou plus et les résultatsde l’examen, mais la présence de distracteurs choisis par moins de 5 % des étudiants avait une influence minime sur ce pouvoir. Nos résultats indiquent que les examens à choix multiple peuvent être considérablement améliorés. Nous suggérons que les enseignants procèdent à une analyse des items et modifient les distracteurs qui compromettent le pouvoir de discrimination des items.


1966 ◽  
Vol 19 (3) ◽  
pp. 971-977 ◽  
Author(s):  
E. Vaughn Gulo ◽  
M. R. Nigro

In two experiments the efficiencies of programmed, television, and conventional textbook instruction were compared. Ss were randomly assigned to a group which worked through a standard programmed text; one which read the same material in conventional textbook form; one which listened to and saw a verbatim video-taped lecture of the programmed material. A 30-item multiple-choice test was administered immediately following instruction (Exps. I and II; Ns = 160, 134) or 1 wk. later (Exp. II). The results indicate that Ss who simply read the material in conventional textbook format only tended to have higher criterion test scores than Ss in either the programmed or television instruction groups. The results were, therefore, interpreted as consistent with the contention often made that differences in effectiveness of various methods of instruction are negligible, or at best, slight.


1966 ◽  
Vol 19 (2) ◽  
pp. 651-654 ◽  
Author(s):  
Donald W. Zimmerman ◽  
Richard H. Williams ◽  
Hubert H. Rehm ◽  
William Elmore

College students were instructed to indicate on various multiple-choice tests whether they “knew the answer” or “guessed” each item, and the results were treated as estimated true and error components of scores. The values of the intercorrelations of these components were similar to those given by a computer program described previously. The values found for all tests were consistent with the assumption that test scores consist of both independent and non-independent components of error and that the non-independent error component is relatively large.


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