Original Research ARTICLE
The Rasch Analysis of Rosenberg Self-Esteem Scale in Individuals with Intellectual Disabilities
- 1Jeonju University, South Korea
Background: The purpose of this study was to examine the psychometric properties of the Rosenberg Self-Esteem Scale for individuals with intellectual disabilities using the Rasch model and to determine whether the scale is valid and reliable for use with this population. Methods: Rasch analysis was carried out on data from 223 respondents to the 8th Panel Survey on Employment for the Disabled conducted by the Korea Employment Agency for the Disabled. The validity and reliability of scale items were verified through analyses of item fit, item difficulties, the rating scale, and separation indices. Results: Item infit mean square values were found to range between 0.71 and 1.25, and item outfit mean square values between 0.71 and 1.26. Additionally, item difficulties were appropriate; Item 4 was the most difficult item, while Item 10 was the easiest item. The 4-point rating scale was appropriate, and the separation indices were at an acceptable level. Conclusions: Based on these results, the validity and reliability of the Rosenberg Self-Esteem Scale for use with individuals with intellectual disabilities were verified. Thus, this scale can be regarded as a useful tool for evaluating the level of self-esteem of individuals with intellectual disabilities.
Keywords: Rosenberg Self-Esteem Scale, Rasch, Intellectual Disabilities, Psychometric, validity
Received: 29 Mar 2019;
Accepted: 14 Aug 2019.
Copyright: © 2019 Park and Park. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Prof. Eun-Young Park, Jeonju University, Jeonju, 560-759, North Jeolla, South Korea, email@example.com