Relationship among Noise Exposure, Noise Annoyance, Emotional Intelligence, and Cognitive Emotional Regulation: A Generalized Structural Equation Modeling

Background and Aim: There is evidence of associations between noise exposure and psychological outcomes from noise annoyance. This study aims to examine the mediating role of noise annoyance in the relationship of noise exposure with Emotional Intelligence (EI) and Cognitive Emotion Regulation (CER). Methods: This is a cross-sectional study that was conducted on 58 male workers of a lead mine in Yazd, Iran. Noise exposure was determined based on ISO 9612:2009. Noise annoyance was assessed using the ISO/TS 15666:2003’s numerical rating scale. The Schutte Self-Report Emotional Intelligence Test (modified version) and the Cognitive Emotion Regulation Questionnaire (CERQ) were used for data collection. Mann-Whitney U test, correlation test, and Generalized Structural Equation Modeling (GSEM) were used to analyze the data. Results: The mean age of workers was 35.78±7.10 years. A significant relationship was found between noise annoyance and noise exposure, such that a unit increase in noise exposure had a multiplicative effect on the odds of experiencing more annoyance (p<0.001). Also, for every one-unit increase in noise annoyance, mean scores for EI and CER decreased by 0.192 and 0.172, respectively. Conclusion: Noise exposure is directly related to noise annoyance and indirectly related to EI and CER. Further studies in this area are recommended to clarify the issue and the relationships between these variables

Psychometric properties of the Persian version of Proactive-Safety Role Orientation questionnaire (PRO-SAFE)

Abstract Background Participation and initiative of workers are effective in promoting safety in the workplace. Proactive-Safety Role Orientation questionnaire (PRO-SAFE) is a proper tool to evaluate the psychological drivers that support the proactive orientation of individuals toward workplace safety. This study was conducted to translate and measure the psychometric properties of the Persian version of PRO-SAFE. Methods The PRO-SAFE was translated into Persian using procedures for translation and cross-cultural adaptation. To collect data, 252 employees of a steel complex were selected. To measure the validity of the questionnaire, face, content, convergent, and construct validity was utilized. The questionnaire’s reliability was evaluated by assessing its internal consistency. Results The mean of the content validity index and content validity ratio was equal to 0.83 and 0.85, respectively. We found a positive correlation between PRO-SAFE and safety behavior dimensions (r = 0.372 to 0.792, P < 0.001). Confirmatory factor analysis showed the Persian version of the PRO-SAFE questionnaire had an excellent six-factor model consistent with the original questionnaire. Cronbach’s alpha of the Persian version of the PRO-SAFE questionnaire was obtained between 0.717 to 0.880. Conclusions The Persian version of the PRO-SAFE questionnaire was found to have appropriate psychometric properties, indicating that it can be confidently used as a valid tool for assessing proactive role orientation toward safety management among Iranian employees

Investigation of the Relationship between Biorhythms and Occupational Accidents Severity in a Chemical Industry, 2009-2022

Introduction: Occupational accidents have several life and financial consequences in industries. Among the causes of accidents, human error and unsafe behavior are known as the most important factors. Studies showed that biorhythms affect human errors and occupational accidents. This study aimed to investigate the relationship between biorhythms and the severity of occupational accidents in the chemical industry.   Materials and Methods: This study investigated chemical industry accidents from 2009-2022. After removing the incomplete reports, 279 accidents report was collected. The investigated accidents were classified into two groups major and minor. Information related to the biorhythms cycles was analyzed using Natural Biorhythm software. Data analysis was done using SPSS-24. Results: The investigation of accidents showed that 115 and 164 people were involved in major and minor accidents, respectively. In this study, in the critical state of the intellectual cycle, the number of major accidents was significantly higher than minor accidents (P=0.009). In the investigation of morning shift work accidents, the relationship between the critical state of the intellectual cycle and the severity of accidents was confirmed (P=0.004). We found no significant relationship between physical and emotional cycles with the severity of accidents.  Conclusion: The results of the present study showed that the critical days of the intellectual biorhythm are related to the severity of occupational accidents. It is recommended to conduct more studies on different jobs and duties to clarify the exact relationships between the variables