Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

Comparing Dichotomous and Polytomous Items Using Item Response Trees

Jenkins, Daniel
http://orcid.org/0000-0003-1966-1645
http://rave.ohiolink.edu/etdc/view?acc_num=wright1598874460571779

Abstract Details

2020, Master of Science (MS), Wright State University, Human Factors and Industrial/Organizational Psychology MS.
Research on the optimal number of response options on graphic rating scales has yielded mixed results such as that more scale points are better; there is an optimal range; or that it does not matter. The present study compared the psychometric properties of dichotomous and polytomous personality items using several methods of scoring including summed scores, item response theory (IRT), and item response trees. It was found that regression models based on dichotomous items explained similar amounts of variance in careless responding as models based on polytomous items. In addition, scores from dichotomous models were more closely related to the trait-level variance from the IR tree model. Results suggests that a 2- or 3-point graphic rating scale can achieve comparable trait measurement as what is offered by longer alternatives while reducing the cognitive burden on the respondent.
David LaHuis, Ph.D. (Committee Chair)
Nathan Bowling, Ph.D. (Committee Member)
Joseph Houpt, Ph.D. (Committee Member)
59 p.
Psychology
Item Response Theory; IRT; Item Response Tree; Scale Length; Graphic Rating Scale Length

Recommended Citations

Citations

  • Jenkins, D. (2020). Comparing Dichotomous and Polytomous Items Using Item Response Trees [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1598874460571779

    APA Style (7th edition)

  • Jenkins, Daniel. Comparing Dichotomous and Polytomous Items Using Item Response Trees. 2020. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1598874460571779.

    MLA Style (8th edition)

  • Jenkins, Daniel. "Comparing Dichotomous and Polytomous Items Using Item Response Trees." Master's thesis, Wright State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1598874460571779

    Chicago Manual of Style (17th edition)

wright1598874460571779
297
© 2020, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.