Document Type : Original Article


1 Department of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

2 Department of Industrial Engineering, Science and Arts University, Yazd, Iran

3 M.Sc Student of Industrial Safety, Science and Arts University, Yazd, Iran

4 M.Sc Student of Ergonomics, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran


INTRODUCTION: Occupational accidents have many undesirable and irreparable effects on labor
forces, assets, environment, and credibility of organizations. Human errors are one of the most
important causes of occupational accidents. Human errors have different causes, but in all cases,
human cognitive abilities and limitations play important roles; in this research, the relationship between
occupational cognitive failures and work-related accidents in heavy equipment operators of Shahid
Rajaee Port Complex has been investigated.
METHODS: This research was done through the field method. A sample of 332 people was selected
by a stratified sampling method among all heavy equipment operators. The data gathering tool
contained a 30-item occupational cognitive failure questionnaire. Furthermore, regression analysis
method was used to test the hypotheses.
RESULTS: The results of this study showed that cognitive failures of occupational accidents on
direct work-related accidents in heavy equipment operators of Shahid Rajaee Port complex have a
direct effect (P < 0.00). Further more, variables that modify the research are age, work experience,
working hours, educational level, type of occupation, and marital status of the operators.
CONCLUSION: Regarding the direct relation between cognitive occupational failures and occupational
accidents, one can predictive this result that the occupational cognitive failure questionnaire can be
used as a predictive tool in accidents of Shahid Rajaee Port Complex.


1. Kim T, Chi S. Accident case retrieval and analyses: Using natural
language processing in the construction industry. J Construct
Engin Manage 2019, 145.3: 04019004
2. Niu S. Ergonomics and occupational safety and health: An ILO
perspective. Appl Ergon 2010, 41.6: 744-753.
3. Tamers SL, Chosewood LC, Childress A, Hudson H, Nigam J,
Chang CC. Total Worker Health® 2014-2018: The novel approach
to worker safety, health, and well-being evolves. Int J Environ Res
Public Health 2019;16: 321.
4. Earle AM, Napper LE, LaBrie JW, Brooks-Russell A, Smith DJ,
de Rutte J. Examining interactions within the theory of planned
behavior in the prediction of intentions to engage in cannabisrelated driving behaviors. J Am Coll Health 2019:1-7.
5. Bergheim, K., Nielsen, M. B., Mearns, K., & Eid, J. The relationship
between psychological capital, job satisfaction, and safety
perceptions in the maritime industry. Safety Sci 2015;74:27-36.
6. Hussain, S., Batool, I., Bano, S., & Ali, H. Emotional climate, work
stress and occupational cognitive failure in doctors. Peshawar J
Psychol Behav Sci 2018, 4.2: 221-235.
7. Simpson SA, Wadsworth EJ, Moss SC, Smith AP. Minor injuries,
cognitive failures and accidents at work: Incidence and associated
features. Occup Med (Lond) 2005;55:99-108.
8. van Doorn RR, Lang JW, Weijters T. Self-reported cognitive
failures: A core self-evaluation? Pers Individ Diff 2010,
49.7: 717-722.
9. Mecacci L, Righi S. Cognitive failures, metacognitive beliefs and
aging. Pers Individ Diff 2006;40.7:1453-9.
10. Petitta L, Probst TM, Ghezzi V, Barbaranelli C. Cognitive failures
in response to emotional contagion: Their effects on workplace
accidents. Accid Anal Prev,2019, 125: 165-173
11. Wallace JC, Vodanovich SJ. Workplace safety performance:
Conscientiousness, cognitive failure, and their interaction. J Occup
Health Psychol 2003;8:316.
12. Broadbent DE, Cooper PF, FitzGerald P, Parkes KR. The Cognitive
Failures Questionnaire (CFQ) and its correlates. Br J Clin Psychol
13. Hassanzadeh Rangi, N., Allahyari, T., Khosravi, Y., Zaeri, F.,
& Saremi, M. Development of an Occupational Cognitive Failure Questionnaire (OCFQ): Evaluation validity and reliability. Iran
Occup Health 2012;9:29-40.
14. Hämäläinen P, Takala J, Saarela KL. Global estimates of
occupational accidents. Safety Sci 2006;44:137-156.
15. Allahyari T, Rangi NH, Khalkhali H, Khosravi Y. Occupational
cognitive failures and safety performance in the workplace. Int J
Occup Saf Ergon 2014;20:175-180.
16. Larson GE, Merritt CR. Can accidents be predicted? An empirical
test of the Cognitive Failures Questionnaire. Applied Psychol
17. Allahyari, T., Saraji, G. N., Adi, J., Hosseini, M., Iravani, M.,
Younesian, M., & Kass, S. J. Cognitive failures, driving errors and
driving accidents. Int J Occup Saf Ergon 2008;14:149-158.
18. Wadsworth EJ, Simpson SA, Moss SC, Smith AP. The Bristol
Stress and Health Study: Accidents, minor injuries and cognitive
failures at work. Occup Med (Lond) 2003;53:392-397.
19. O’HARE DA, Wiggins M, Batt R, Morrison D. Cognitive
failure analysis for aircraft accident investigation. Ergonomics
20. Park YM, Kim SY. Impacts of job stress and cognitive failure on
patient safety incidents among hospital nurses. Saf Health Work
21. ABOLGHASEMI, Abbas; KIAMARSI, Azar. The Relationship
between metacognition and cognitive failures in the elderly.
Advances in Cognitive Science 2009;11:8-15.
22. Barati H, Oreyzi SS. Relation between Cognitive Failures and
Cognitive Beliefs in Life Span Considering thought Control;