MEASURING THESIS PROCRASTINATION: VALIDATION OF AN INDONESIAN STUDENT SCALE WITH THE RASCH MODEL

Abstract

This study aims to develop and validate the Indonesian Thesis Procrastination Scale (ID-TPS) while exploring students' procrastination behavior in thesis completion. ID-TPS was tested on 762 university students (636 females, 126 males) using Rasch Models, particularly the Partial Credit Model (PCM). The analysis results indicate that ID-TPS exhibits high validity and reliability, making it a precise instrument for assessing academic procrastination levels. Of the 32 items developed, 31 were retained, while one item was removed due to outfit MNSQ > 1.5. The scale demonstrates high item and person separation indices, confirming its ability to differentiate procrastination levels among students. These findings contribute to the academic procrastination literature and have the potential to be integrated into academic interventions, such as structured academic support, counseling, and time management workshops, to assist students in overcoming procrastination and completing their studies on time.