Association between exposure to work stressors and cognitive performance

Area of Science:

• Occupational Health
• Cognitive Psychology
• Neuroscience

Background:

• Work-related stress is a prevalent issue in healthcare settings.
• Cognitive performance is crucial for effective job execution in demanding professions.

Purpose of the Study:

• To investigate the relationship between occupational stress (job strain) and cognitive abilities.
• To assess how different levels of job strain affect learning, short-term memory, and memory retrieval speed.

Main Methods:

• A cohort of 99 female hospital ward employees was studied.
• Participants were categorized into high job strain (top quartile) and low job strain (bottom quartile) groups.
• Cognitive performance was evaluated using validated tests measuring learning, short-term memory, and speed of memory retrieval.

Main Results:

• The high job strain group demonstrated significantly lower performance in learning, short-term memory, and speed of memory retrieval compared to the low job strain group.
• After adjusting for education level, the difference in the speed of memory retrieval remained statistically significant.
• P-values: Learning (P=0.025), Short-term memory (P=0.027), Speed of memory retrieval (P=0.003, adjusted P=0.010).

Conclusions:

• Job strain is associated with deficits in cognitive functions, especially the speed of memory retrieval.
• Impaired speed of memory retrieval due to work stress may be a significant factor contributing to reduced work performance.
• Findings suggest interventions targeting stress reduction could improve cognitive function and performance in healthcare workers.