Structure of the Complexity Parameter of the Test Physic Problem in Rasch ModelReport as inadecuate

Structure of the Complexity Parameter of the Test Physic Problem in Rasch Model - Download this document for free, or read online. Document in PDF available to download.

International Journal of Environmental and Science Education, v11 n18 p11899-11905 2016

In today's item response theory (IRT) the response to the test item is considered as a probability event depending on the student's ability and difficulty of items. It is noted that in the scientific literature there is very little agreement about how to determine factors affecting the item difficulty. It is suggested that the difficulty of the item increases with the number of key elements, which are the data elements used in solving the item. Based on the statistical analysis of solutions of specially designed test items it has been concluded that there is a linear dependence of the item difficulty in the Rasch model on the number of key elements of the solution. The result allows taking an unbiased look at the difficulty of test items at the stage of their development, as well as predicts the outcome of testing.

Descriptors: Item Response Theory, Test Items, Difficulty Level, Science Tests, Physics, Electronics, Test Construction, Testing, College Science, College Freshmen, Foreign Countries

LOOK Academic Publishers. Knobbelzwaansingel 211 Den Haag 2496LN, Netherlands. Tel: 31-20-217-0912; e-mail: editor[at]; Web site:

Author: Volov, Vyacheslav T.; Gilev, Alexander A.


Related documents