Impulsivity and risky decision making among taxi drivers in Hong Kong: An event-related potential study

Shu Kei Cheng, K. H. Ting, Karen P.Y. Liu, Yutao Ba

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)


However, they tend to be more involved than other professional driver groups in accidents caused by deliberate recklessness. This study used an event-related potential (ERP) experiment to examine risk-taking behavior arising from impulsivity by comparing the underlying neural processes of taxi drivers with and without traffic offence records in Hong Kong. A sample of 15 traffic offenders and 15 nonoffenders, matched by sociodemographic characteristics, was recruited. The results show that the offender group demonstrated significantly less negative-going (less negative) feedback-related negativity but more positive-going (more positive) feedback-related P300 when than with their nonoffending counterparts. These findings show that taxi drivers with traffic offence records were less sensitive to the consequences of behavior and more attuned to the magnitude of potential reward. In addition, behavioral data revealed that they were more willing to make risky decisions. All these characteristics pertain to impulsive personality traits. Based on these findings, we can conclude that the offenders in this sample were more impulsive than their nonoffending counterparts.
Original languageEnglish
Pages (from-to)387-394
Number of pages8
JournalAccident Analysis and Prevention
Publication statusPublished - 1 Oct 2016


  • Event-related potentials
  • Impulsivity
  • Risk-taking behavior
  • Taxi driver
  • Traffic offence

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Safety, Risk, Reliability and Quality
  • Public Health, Environmental and Occupational Health
  • Law

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