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However, Budescu and Nevo ([1985]), in a partly theoretical and partly empirical study, attacked the assumption of proportionality based on recording the time taken to complete tests using different option format items.
Following the marking of the multiple choice tests, the participants' option selections were analysed and comparisons were conducted of the validity, reliability and difficulty of the three different option format tests as well as the discrimination ability of the items in their those option formats.
The distractors were compared based on their content (as opposed to their letter denomination in the list of options, which was allocated randomly between the items in different option format), their inclusion in the items, and the number of times that an individual distractor was judged to be performing or discriminating according to the definitions employed in section ii above.
Notably however the distributions of performing sets between the items was not consistent as reflected by the correlation coefficients between the data sets shown in Table 10, none of which were significant and for the reading section, were in two out of three cases, negative suggesting that it was not the same items which were producing the performing sets in the different option format groups.
Both scales use a four-answer option format, and item scores range from 0 to 3, with higher scores indicating greater symptom severity.
Questions to be answered in a multiple option format, by a simple yes or no, to complete the answer, or to select more than one response were included in different sections.
Similar(46)
Differences in item difficulty between items in different multiple choice option formats: Facility indices compared using ANOVA.
A comparison of scores, facility, discrimination, reliability and validity from 3-, 4- and 5-option versions of the multiple choice test found little variation in the performance of the three option formats although higher numbers of options tended to increase difficulty and to spread responses between the options.
In order to study the changes in responses between tests, the participants' answers from the short answer test were directly compared with their option selection in the multiple choice test, and the patterns of variation and consistency were classified according to the taxonomy shown in Table 12 below, and analysed based on the test option formats, and the test sections (structure and reading).
Refinements were made to wording, filtering and response option formats, but no items were dropped.
Following this, three multiple choice tests in 3-, 4- and 5-option format were constructed.
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