Researchers have developed a new way to measure stress and Boredom by analyzing biological signals from both the body and brain, revealing unexpected insights into how stress is experienced.
The study found that highly challenging and overly simple tasks triggered the highest stress levels, while moderately difficult tasks resulted in the lowest stress. Surprisingly, the study also linked stress levels to feelings of boredom, offering a new perspective on stress measurement.
Measuring Stress and Boredom as an Integrated System
Traditionally, stress is measured through physiological indicators such as heart rate, perspiration, and brain activity. However, hidden variables can influence these factors, making it difficult to assess stress comprehensively. In this study, researchers took a different approach by considering the body and brain as a single dynamic system rather than evaluating each stress marker separately.
Participants were asked to complete computational tasks of varying difficulty to test this method while their biological signals were recorded. Researchers used electroencephalograms (EEG) to track brain activity, electrocardiograms (ECG) to monitor heart function, and skin conductance measurements to assess sweat levels.
Stress Levels Highest in Easy and Difficult Tasks
Researchers analyzed the collected data using Integrated Information Theory, a mathematical method that quantifies the coherence of a system with multiple variables over time. The results showed that stress levels were highest during the most straightforward and complex tasks, while medium-difficulty tasks led to the lowest stress.
This finding suggests that stress is caused by overwhelming difficulty and a lack of engagement. Further analysis of participants’ subjective reports reinforced this conclusion, showing that boredom was the most decisive factor associated with stress.
Rethinking Stress and Engagement
These results suggest that stress is not solely a reaction to high-pressure situations but can also emerge from insufficient stimulation. The study offers a new perspective on stress management, emphasizing the importance of maintaining an optimal level of challenge to prevent excessive stress and disengagement.
By incorporating this new mathematical approach, future research could refine stress assessment methods and help develop better strategies for managing stress in workplaces, schools, and daily life. Researchers hope these findings will contribute to a deeper understanding of how stress functions and how it can be mitigated effectively.
Reference: Takayuki Niizato, Yuta Nishiyama, Yuta Oka, Poe Thinzar Aung, Shusaku Nomura. Toward stressor-free stress estimation: The integrated information theory explains the information dynamics of stress. iScience, 2024.
