The objective of this study is to investigate and construct a valid and reliable instrument to measure training effectiveness or the development of Training Effectiveness (TREF). The research was done through three TREF measures including satisfaction, learning performance, and behavioral change measures. The development of TREF was applied using descriptive statistics average variance explained (AVE), Composite Reliability (CR), and reliability. Data were analyzed using reliability analysis, and structural equation modeling (SEM) using confirmatory factor analysis (CFA) through Stata and Jamovi software. Significantly, the TREF as produced in this research can be used as an instrument to measure the effectiveness of training in the private and public sectors. Subsequently, this effort will support the improvement of quality human resources in the public sector for effective national policy implementation.

Keywords: Training, TREF, CFA, Human resource development, training effectiveness