This study aimed to explore the relationship among the Big Five personality traits, emotional intelligence (EIQ), psychological capital (PsyCap), and teacher well-being (TPWB) within the context of higher education. The objective was to predict TPWB in university teachers by utilizing the Big Five personality traits and PsyCap while considering EI as a mediator. Data were collected from 708 teachers in Ethiopian higher education institutions. Participants completed the Emotional Intelligence Scale (EIS-16), Big Five Personality Inventory (BFI-10), Psychological Capital Questionnaire (PCQ-12), and Teacher Professional Well-Being Scale (TPWBS). The analysis included reliability tests, correlation analysis, validity assessment, measurement invariance, and serial mediation testing. The findings unveil a significant direct positive effect of Big Five personality traits on EIQ, PsyCap, and TPWB. Furthermore, PsyCap demonstrates a direct positive effect on TPWB. PsyCap fully mediates the relationship between the Big Five personality traits, EIQ, and TPWB, while EIQ partially mediates the relationships between the Big Five personality traits and PsyCap/TPWB, accentuating a serial mediation effect. Moreover, the personality trait of openness to experience positively predicts EIQ, PsyCap, and TPWB. Conscientiousness and agreeableness also positively predict EIQ, while extraversion directly influences PsyCap in a positive manner. However, neuroticism exerts a negative direct impact on EIQ, PsyCap, and TPWB. Additionally, emotional intelligence partially mediates the relationship between the five dimensions of the Big Five personality (openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism) and TPWB. In conclusion, PsyCap fully mediates the relationship between the Big Five personality traits, EIQ, and TPWB, while EIQ partially mediates the relationships between the Big Five personality traits and PsyCap/TPWB. These findings hold significant implications for enhancing well-being among teachers.

Introduction: The widespread use of the internet has brought numerous benefits, but it has also raised concerns about its potential negative impact on mental health, particularly among university students. This study aims to investigate the relationship between internet addiction (IA) and mental health (MH) in university students, as well as explore the mediating effects of positive psychological capital (PsyCap) in this relationship. Objective: The main goal of this study was to examine the psychometric properties of the measures and to determine whether internet addiction could negatively predict university students’ mental health, mediated through PsyCap. Method: A cross-sectional design with an inferential approach was employed to address this objective. The data were collected using the Psychological Capital Questionnaire (PCQ-24), Internet Addiction Scale (IAS), and Keyes’ Mental Health Continuum-Short Form (MHC-SF). The total sample of this study comprised 850 students from two large public higher education institutions in Ethiopia, of whom 334 (39.3%) were female and 516 (60.7%) were male, with a mean age of 22.32 (SD = 4.04). Several analyses were performed to achieve the stated objectives, such as Cronbach’s alpha and composite reliabilities, bivariate correlation, discriminant validity, common method biases, and structural equation modeling (confirmatory factor analysis, path analysis, and mediation analysis). Confirmatory factor analysis was conducted to test the construct validity of IAS, PCQ-24, and MHC-SF. Additionally, the mediating model was examined using structural equation modeling with the corrected biased bootstrap method. Results: The preliminary study results found that the construct validity of IAS, PCQ-24, and MHC-SF was excellent and appropriate. Furthermore, the findings demonstrate that internet addiction had a negative and direct effect on PsyCap and MH. Moreover, PsyCap fully mediated the relationship between IA and MH. Additionally, this study confirmed that all the scales exhibited strong internal consistency and good psychometric properties. Conclusion: This study contributes to a better understanding of the complex interplay between IA, PsyCap, and MH among university students, confirming previous findings. Recommendation: The findings, discussed in relation to the recent and relevant literature, will be valuable for practitioners and researchers aiming to improve mental health and reduce internet addiction by utilizing positive psychological resources as protective factors for university students.

Teacher professional well-being (TPWB) is crucial in education, affecting educators and students. The Teacher Professional Well-Being Scale (TPWBS) measures five core dimensions—self-efficacy, job satisfaction, aspiration, recognition, and authority—initially developed in Turkey. This study aims to adapt, develop, and validate the Teacher Professional Well-Being Scale (TPWBS) in Ethiopia. Investigate the TPWBS factor structure and evaluate its measurement invariance (MI) across gender, university type, and teaching experience. By examining teachers’ perceptions of professional well-being, this study contributes to understanding Ethiopian higher education. Exploratory factor analyses (EFA) and confirmatory factor analyses (CFA) use data from Ethiopian university instructors. Conduct initial EFA on a sample of 82 men and 222 women (sample 1), followed by CFA on a sample of 529 men and 179 women (sample 2). Assess factor loadings of TPWBS items across sub-dimensions. Use data from Ethiopian higher education institutions and involve 1012 instructors. The EFA reveals excellent factor loadings for all TPWBS items within each sub-dimension, indicating a robust factor structure. TPWBS exhibits acceptable construct validity, good reliability, and satisfactory convergent and divergent validity. The CFA demonstrates good model fit, supporting TPWBS validity: χ² (289) = 942.20, p < 0.001, χ²/df = 3.26, GFI = 0.912, TLI = 0.935, CFI = 0.943, RMSEA = 0.057, 95% CI [0.053, 0.061]. TPWBS is a valid and reliable tool for assessing the professional well-being of Ethiopian university teachers. Its adaptation and validation process highlight cultural and contextual factors in well-being evaluation. Findings offer insights for practitioners and researchers in well-being assessment.