Investigation the Effect of Item Position on Person and Item Parameters: PISA 2015 Turkey Example

Different positions of items in booklets affect the probabilities correct answers. This effect is called item position literature, which causes variances and person parameters. The aim this study to investigate within framework explanatory response theory. analyses research were carried out on PISA 2015 Turkey sample, was examined domains reading mathematics. In addition, different formats (open multiple choice) investigated. According results, decreased probability answering correctly, higher than Furthermore, domain mathematics, open affected more multiple-choice by position. domain, choice similarly. results analysis show that there undesirable effects position, these should be taken into account.