FaraAngizesh Publication Recent Innovations in Psychology 3041-8968 3 3 2026 06 22 The Relationship of Neuroticism and Neuropsychological Functioning With Risky Driving Behaviors The Relationship of Neuroticism and Neuropsychological Functioning With Risky Driving Behaviors 234694 10.22034/rip.2025.552005.1115 FA Hossein Ali Mohammadi Ph.D. in Health Psychology, Najafabad Branch, Islamic Azad University, Najafabad , Iran 0000-0002-6287-5262 Fatemeh Jafari MSc. in General Psychology, Zarrinshahr Branch,, Payeme Noor University, Zarrinshahr, Iran 0009-0007-9436-0291 Somayeh Abolghasemi Ph.D. Student in Psychology, Najafabad Branch, Islamic Azad University, Najafabad , Iran 0009-0002-0264-8014 Tayyebeh Jafari Ph.D. Student in Psychology, Najafabad Branch, Islamic Azad University, Najafabad , Iran 0000-0001-9090-8159 Journal Article 2025 08 05 The present study aimed to examine the relationship between neuroticism and neuropsychological functioning and risky driving behaviors among heavy vehicle drivers. In a correlational design, 100 heavy vehicle drivers (trucks, tractor-trailers, and buses) attending health card service centers and technical inspection centers in Najafabad were selected through convenience sampling. Data were collected using the Manchester Driver Behavior Questionnaire (M-DBQ), the Amen Brain System Checklist (ABSC), and the NEO Five-Factor Inventory short form (NEO-FFI). The findings indicated positive and significant correlations among the study variables (<em>p </em>< .01). Regression analysis also showed that neuroticism (<em>β </em>= .17), hyperactivity (<em>β </em>= .20), and basal ganglia function (<em>β </em>= .39) were positive predictors of risky driving behavior. Risky driving is a multifactorial phenomenon, and neuroticism, prefrontal hyperactivity, and basal ganglia function play roles in it. Despite limitations such as the correlational design and self-report instruments, psychological and neuropsychological screening and interventions targeting emotion regulation, impulse control, sustained attention, and decision-making are recommended for heavy vehicle drivers and for the process of issuing and renewing driver’s licenses. The present study aimed to examine the relationship between neuroticism and neuropsychological functioning and risky driving behaviors among heavy vehicle drivers. In a correlational design, 100 heavy vehicle drivers (trucks, tractor-trailers, and buses) attending health card service centers and technical inspection centers in Najafabad were selected through convenience sampling. Data were collected using the Manchester Driver Behavior Questionnaire (M-DBQ), the Amen Brain System Checklist (ABSC), and the NEO Five-Factor Inventory short form (NEO-FFI). The findings indicated positive and significant correlations among the study variables (<em>p </em>< .01). Regression analysis also showed that neuroticism (<em>β </em>= .17), hyperactivity (<em>β </em>= .20), and basal ganglia function (<em>β </em>= .39) were positive predictors of risky driving behavior. Risky driving is a multifactorial phenomenon, and neuroticism, prefrontal hyperactivity, and basal ganglia function play roles in it. Despite limitations such as the correlational design and self-report instruments, psychological and neuropsychological screening and interventions targeting emotion regulation, impulse control, sustained attention, and decision-making are recommended for heavy vehicle drivers and for the process of issuing and renewing driver’s licenses.