Supplementary file 1_Psychometric validation of the Ego-undercontrol scale in Chinese college students.docx

Ego-control is considered a vital element of ego functioning. This study aimed to explore the factor structure and psychometric properties of the Chinese version of the Ego-undercontrol Scale (EUC-C) in Chinese college students. A sample of 1,823 participants from three general universities in Shanghai, China (mean age = 19.70, SD = 1.42, 44.2% male individuals), completed the survey. A shorter version of the EUC-C was developed. Confirmatory factor analysis (CFA) validated a two-factor structure of the EUC-C, comprising impulse and inhibitory behaviors. In addition, the EUC-C showed adequate validity and reliability. In conclusion, the results showed that the EUC-C has acceptable psychometric properties, making it a valid and reliable instrument for assessing ego-control among Chinese university students.