Task-related effort - distinguishing boredom- and difficulty-related effort via electrodermal activity

Area of Science:

• Cognitive Psychology
• Psychophysiology
• Human Performance

Background:

• Effort is crucial for human performance, stemming from task difficulty or boredom.
• Understanding the temporal dynamics and physiological correlates of different effort sources is essential.
• The potential impact of cognitive effort on subsequent physical performance (ego depletion) remains debated.

Purpose of the Study:

• To investigate the temporal dynamics of effort related to task difficulty versus boredom during cognitive tasks.
• To examine the physiological correlates of these distinct effort types using electrodermal activity (EDA).
• To determine if cognitive effort influences subsequent physical task performance.

Main Methods:

• Ninety-five participants performed easy and hard Stroop tasks, rating boredom, difficulty, effort, and fatigue.
• Electrodermal activity (EDA) was recorded during cognitive tasks.
• A handgrip task followed each cognitive task to assess physical performance.

Main Results:

• Boredom, boredom-related effort, and fatigue increased over time; task difficulty and difficulty-related effort decreased.
• The easy Stroop task induced more boredom and fatigue, while the hard Stroop task involved higher difficulty and difficulty-related effort.
• EDA showed distinct patterns for boredom- vs. difficulty-related effort in the easy Stroop task, with no effects in the hard Stroop task.

Conclusions:

• Effort is multifaceted, with boredom and difficulty eliciting distinct psychological and physiological responses.
• Enduring boredom may be more physiologically taxing than managing task difficulty.
• No evidence for ego depletion was found, as cognitive effort did not impair subsequent physical performance.