Sentence examples for difficulty and ability from inspiring English sources

IRT enables construction of scales where both items and persons are assigned values representing their respective difficulty and ability.

Nevertheless, Rasch software is able to provide simulated estimates of other parameters aside from difficulty and ability such as the degree of discrimination an item provides in determining the level of the underlying trait in a respondent.

The Rasch model uses probability to determine the relationship between a raw score and a person's ability, taking both item difficulty and person ability into account on an item-by-item basis (Bond & Fox, 2001; Rasch, 1980).

Although it is still necessary to have a number of persons who complete both tests and/or a number of items common to both tests, all the data are recorded in one file so that a single execution of the Winsteps program is used to simultaneously calculate the difficulty measures and ability measures for all items and persons.

Similarly, for a 5-point increase in trust, self-reported difficulty would decrease by 0.1 points (about 20% of a standard deviation in difficulty) and global ability to care for diabetes would decrease by 0.3 (about 33% of a standard deviation in global ability to care for diabetes).

First, item difficulty and person ability measures are calculated for Test A. Then, a number of items and/or persons are selected as anchor values around which item difficulty and person ability measures from Test B are calibrated.

Item difficulty and person ability were determined using IRT based on logits, which are estimated using the marginal maximum likelihood analysis.

This design optimized the match between item difficulty and respondent ability, providing more reliable information about a respondent's skills within the specified testing time.

The mean ability of average secondary school students could hence be expected to increase slightly when the test is applied in a situation that is more relevant to the students, resulting in an increased fit between item difficulty and person ability.

The section of the study described here addressed the effect of using 3-, 4- and 5-option items and investigated if there were significant differences in the validity, reliability, difficulty, and discrimination ability of stem-equivalent items associated with differing numbers of options.

Rasch methodology is probabilistic, in that item difficulty and person ability are concurrently approximated.