Dr Chris Wheadon, head of scientific research and development at AQA, explained how the test would work: "There would be a bank of questions, each graded in terms of difficulty, and the program would pull up questions of appropriate difficulty as the student progressed through the paper.
It is concluded that students are satisfied with the technology for foreign language learning due to its convenience, appropriate difficulty level, and practicality.
A personalized training program with the appropriate difficulty level according to the patients' abilities can be established.
The patient executes the task with an appropriate difficulty configuration in order to get the best treatment effectiveness.
Targeting is defined as the extent to which items are of appropriate difficulty for the sample [ 17].
The appropriate difficulty level for each subject for the PERMP was determined at screening based on results of a timed math pretest.
Station A produces the closest to the ideal TCC with appropriate difficulty (mean θ = −1.01) while Station E results in a linear type TCC.
Finally, the automatic therapy planning is done by selecting tasks from the Suitability Quartiles, configuring the appropriate difficulty depending on the rehabilitation needs of each patient.Figure 6 summarizes the process of assigning the score to every task, rating them into suitability quartiles, and how the difficulty level is selected to personalize treatments.
After each field test, scenarios and items in the CI were eliminated or revised in order to increase readability and to ensure appropriate difficulty and discriminability of all items and optimal selection of all distracters (steps 4 8, Table 1; see Methods for more details).
Anchor items are important in statistical equating, as they are used to equate performance across different diets of the exam, and they themselves are usually chosen in terms of good conventional item statistics (high item-total correlation and an appropriate difficulty level).
