Amran Hapsan, Endang Mulyatiningsih, Kana Hidayati, Indriani H. Ismail
The Academic Potential Test (APT) is a crucial instrument used in the selection process of Indonesian Civil Servant Candidates (CSC), which measures the cognitive potential of prospective employees. This study aims to evaluate the characteristics of items in the Academic Potential Test for Indonesian Civil Servant Candidates using the Item Response Theory (IRT) approach with dichotomous scoring, in order to improve the quality and validity of the test. The research method applied was descriptive quantitative, involving 330 participants in the APT CSC simulation training as research samples. Data analysis was conducted using three logistic models in IRT, namely one parameter (1-PL), two parameters (2-PL), and three parameters (3-PL). The results revealed that the 1-PL model is the most suitable model (fit) for estimating item parameters as well as the difficulty level of APT CSC questions in dichotomous data. Analysis of the item parameters showed that overall, the items in the APT CSC met the criteria of “good” based on the standard level of difficulty. Based on these findings, the study concluded that the 1-PL model can be used as a valid and reliable tool in estimating the difficulty level of APT CSC question items. In addition, the results of this study provide a basis for efforts to improve and develop the APT CSC in the future. © 2026, National Research University Higher School of Economics (HSE University). All rights reserved.
Department of Mathematics Education, Patompo University Makassar, Inspection Canal Street, Citraland No. 10, Rappocini District, Makassar City, 90233, Indonesia; Department of Culinary Arts and Fashion Engineering Education, Faculty of Engineering, Yogyakarta State University, Colombo Street No. 1, Karang Malang, Caturtunggal, Depok District, Sleman Regency, Special Region of Yogyakarta, 55281, Indonesia; Yogyakarta State University, Colombo Street No. 1, Karang Malang, Caturtunggal, Depok District, Sleman Regency, Special Region of Yogyakarta, 55281, Indonesia
