Exact(1)
Yet, animals are confronted with items that vary in size throughout their lives, such as foods, conspecifics or predators, and the ability to discriminate items on the basis of their size is assumed to be highly advantageous.
Similar(59)
The rotated factors did not clearly discriminate item 5 (" How do you rate your physical fitness?").
Discrimination parameters were limited to this range because items with very low discrimination (i.e., less than 0.5) are rarely used in item banks, whereas highly discriminating items (i.e., true discrimination parameters greater than 2.5) tend to be poorly estimated (i.e., positively biased) parameters [ 36].
There were eleven highly discriminating items (D = 0.3 - 1), thirteen slightly discriminating items (D = 0.1 - 0.3), and three poorly discriminating (17, 21, and 23; D < 0.1) items.
Regarding the discrimination index, the results showed that the percentage of the very good discriminating items increased from 13.3%% in 2009/2010 to 70%% in 2010/2011.
Discriminating items have higher slopes than lower discriminating items.
Both assessments were found to be Rasch homogeneous, and the number of clearly discriminating items was determined to be sufficient.
This paper adopts the view that the most precise person estimator was achieved using the remaining discriminating items according to the item information function of the Rasch model.
The least discriminating items in the bully scale were damaging the belongings of others and using the Internet to hurt others (cyberbullying).
In other words, DIF in high discriminating items may be easier to detect because these items are administered more frequently in CAT.
For these items the range of scores in which participants respond either correctly or incorrectly is wider than high discriminating items.
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