How are cognitive and physical difficulty compared?

Area of Science:

• Cognitive Psychology
• Decision Making
• Psychophysics

Background:

• Individuals generally prefer tasks with lower physical or mental effort.
• Choosing between tasks with different types of effort (physical vs. mental) presents a unique decision-making challenge.

Purpose of the Study:

• To investigate how individuals choose between tasks demanding different kinds of effort (physical vs. mental).
• To test whether subjective task duration serves as a common currency for comparing task difficulties.

Main Methods:

• Participants chose between a physical bucket-carrying task and a mental counting task.
• Task difficulty was manipulated by varying reach distance (physical) and final count value (mental).
• Two-alternative forced choice and computational modeling were used to analyze choice data.

Main Results:

• Reduced likelihood of choosing the physical task with longer reach or smaller count values.
• Subjective task duration provided a superior explanation for task choices compared to objective durations.
• This suggests perceived duration is a key factor in comparing effort types.

Conclusions:

• Subjective task duration acts as a common metric for comparing the difficulty of physically and mentally demanding tasks.
• This research introduces a novel approach to studying the perception of task difficulty across different modalities.
• Findings have implications for understanding attention, perception, and psychophysical judgments.