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Multiple choice question : ウィキペディア英語版
Multiple choice

Multiple choice is a form of assessment in which respondents are asked to select the best possible answer (or answers) out of the choices from a list.〔http://www.merriam-webster.com/dictionary/multiple%20choice〕 If guessing an answer, there's usually a 25 percent chance of getting it correct on a 4 answer choice question. Finding the right answer from multiple choices can be automated using multiple choice question answering systems.〔"(Versatile question answering systems: seeing in synthesis )", Mittal et al., IJIIDS, 5(2), 119-142, 2011.〕 The multiple choice format is most frequently used in educational testing, in market research, and in elections, when a person chooses between multiple candidates, parties, or policies.
Although E. L. Thorndike developed an early multiple choice test, Frederick J. Kelly was the first to use such items as part of a large scale assessment.〔Mathews, J: "Just Whose Idea Was All This Testing?", The Washington Post, November 14, 2006.〕 While Director of the Training School at Kansas State Normal School (now Emporia State University) in 1915, he developed and administered the Kansas Silent Reading Test. Soon after, Kelly became the third Dean of the College of Education at the University of Kansas. The first all multiple choice, large scale assessment was the Army Alpha, used to assess the intelligence and more specifically the aptitudes of World War I military recruits. Multiple choice testing is particularly popular in the United States.
The items of a multiple choice test are often colloquially referred to as "questions," but this is a misnomer because many items are not phrased as questions. For example, they can be presented as incomplete statements, analogies, or mathematical equations. Thus, the more general term "item" is a more appropriate label. Items are stored in an item bank.
== Structure ==
Multiple choice items consist of a stem and a set of options. The ''stem'' is the beginning part of the item that presents the item as a problem to be solved, a question asked of the respondent, or an incomplete statement to be completed, as well as any other relevant information. The options are the possible answers that the examiner can choose from, with the correct answer called the ''key'' and the incorrect answers called ''distractors''.〔Kehoe, Jerard (1995). (Writing multiple-choice test items ) ''Practical Assessment, Research & Evaluation'', ''4''(9). Retrieved February 12, 2008.〕 Only one answer can be keyed as correct. This contrasts with multiple response items in which more than one answer may be keyed as correct.
Usually, a correct answer earns a set number of points toward the total mark, and an incorrect answer earns nothing. However, tests may also award partial credit for unanswered questions or penalize students for incorrect answers, to discourage guessing. For example, the SAT removes a quarter point from the test taker's score for an incorrect answer.
For advanced items, such as an applied knowledge item, the stem can consist of multiple parts. The stem can include extended or ancillary material such as a vignette, a case study, a graph, a table, or a detailed description which has multiple elements to it. Anything may be included as long as it is necessary to ensure the utmost validity and authenticity to the item. The stem ends with a lead-in question explaining how the respondent must answer. In a medical multiple choice items, a lead-in question may ask "What is the most likely diagnosis?" or "What pathogen is the most likely cause?" in reference to a case study that was previously presented.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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