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All Journal Journal of Research and Educational Research Evaluation Jurnal Penelitian dan Pengukuran Psikologi: JPPP
Widyastuti Widyastuti
Department of Psychology, Universitas Negeri Makassar
Humanities Education Health Professions Neuroscience Social Sciences

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Implementation of Item Response Theory (IRT) Rasch Model in Psychometric Property Quality Analysis in Anger Management Scale (AMS-9) of Students Dwi Yan Nugraha; Dian Nugraha; Muh Daud; Widyastuti Widyastuti; Ahmad Ridfah
Journal of Research and Educational Research Evaluation Vol 12 No 1 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jere.v12i1.66260

Abstract

Research on anger management has been widely carried out, especially in Indonesia, so it is necessary to re-evaluate the psychometric characteristics of the anger management scale made by researchers using the Rasch model method. This study aims to analyze the psychometric characteristics of the anger management scale which is used to measure students' ability to manage anger emotions using the Rasch model approach. Respondents in this study were 103 respondents consisting of 35 men and 68 women with an age range of 15-19 years. This study shows that the discriminatory power of items ranges from 0.57 to 0.72. This study also shows that there are three items that are invalid in terms of the validity of the content of the anger management scale, and are classified as valid in terms of construct validity and rating scales which indicate that the answer choices given are understandable and can be differentiated by research respondents. This study also shows that the overall anger management scale is relatively reliable (α = 0.89). Therefore, the anger management scale has good quality psychometric properties and is in accordance with the Rasch model.
Evaluation of Psychometric Characteristics of A Logical Reasoning Tool With The Classic Test Theory Approach Dwi Yan Nugraha; Dian Nugraha; Widyastuti Widyastuti; Ahmad Ridfah
Journal of Research and Measurement in Psychology: JPPP Vol 12 No 2 (2023): Jurnal Penelitian dan Pengukuran Psikologi Vol 12 No 2 Oktober 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat UNJ dan Program Studi Psikologi Fakultas Pendidikan Psikologi Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JPPP.122.02

Abstract

Research on logical reasoning began to be carried out in Indonesia, it is necessary to conduct an evaluation of the psychometric characteristics possessed by logical reasoning measurement tools made by researchers. Logical reasoning measurement tools made by researchers need to be re-evaluated considering there are weaknesses in terms of using a relatively small number of subjects, so that it can affect the standardization of logical reasoning measuring devices. This study aims to obtain an overview of item difficulty index, item discrimination index, effectiveness of the distractors, validity, reliability, and error measurement from the logical reasoning measurement tool. Respondents in this study amounted to 7.730 students, consisting of 3.897 men and 3.833 women with an age range of 15-19 years. The research data were analyzed with the help of Microsoft Excel 2007, SPSS version 22.00, and ITEMAN version 3.6. The results of this study indicate that the item difficulty index moves from 0.35 to 0.80 which belongs to the easy and medium category. This study also shows that the item discrimination index moves from 0.10 to 0.71 with four items rejected and need to be aborted. This study also shows that the effectiveness of the distractors contained in each item in the logical reasoning measure is in the effective category. This study also shows that each item in the logical reasoning measure is considered valid in terms of factorial validity through exploratory factor analysis (EFA) procedures. This study also shows that the measurement of logical reasoning is relatively reliable with a Cronbach Alpha coefficient of 0.906. This study also shows that the measurement error obtained in this study is ± 3.92 of the total score obtained using a logical reasoning measure with a confidence level of 95%, with the actual score estimate obtained by respondents moving from 12.08 to 19.92, if the scores obtained by respondents sixteen.
Co-Authors Ahmad Ridfah Dian Nugraha Dwi Yan Nugraha Dwi Yan Nugraha Muh Daud