Hurts to Think: The Unpleasant Truth About Mental Effort

Summary: New research suggests that mental exertion is often associated with unpleasant feelings such as stress and irritation, challenging the notion that people enjoy mentally demanding tasks.

A meta-analysis of 170 studies found a consistent link between mental effort and discomfort across diverse populations and tasks. Interestingly, this aversive effect was less pronounced in Asian countries, possibly due to different cultural attitudes towards education.

Despite the discomfort, people still engage in challenging tasks for potential rewards, indicating that the motivation may lie in the benefits rather than the effort itself.

Key Facts:

  1. Discomfort with Effort: People generally find mental effort unpleasant, experiencing feelings like frustration and stress.
  2. Cultural Differences: The discomfort associated with mental exertion is less pronounced in Asian countries, possibly due to cultural attitudes towards education.
  3. Motivation vs. Enjoyment: People often engage in challenging tasks for rewards, not necessarily because they enjoy the mental effort.

Source: APA

If somebody complains that it hurts to think, they may be onto something, as mental exertion appears to be associated with unpleasant feelings in many situations, according to research published by the American Psychological Association.

“Managers often encourage employees, and teachers often encourage students, to exert mental effort. On the surface, this seems to work well: Employees and students do often opt for mentally challenging activities,” said senior author Erik Bijleveld, PhD, of Radboud University.

“From this, you may be tempted to conclude that employees and students tend to enjoy thinking hard. Our results suggest that this conclusion would be false: In general, people really dislike mental effort.”

The research was published in the journal Psychological Bulletin.

Researchers conducted a meta-analysis of 170 studies, published between 2019 and 2020 and comprising 4,670 participants, to examine how people generally experience mental effort. They did so by testing whether mental effort is associated with unpleasant feelings and whether that association depends on the task or the population involved. 

The studies used a variety of participants (e.g., health care employees, military employees, amateur athletes, college students) from 29 countries and involved 358 different cognitive tasks (e.g., learning a new technology, finding one’s way around an unfamiliar environment, practicing golf swings, playing a virtual reality game).

In all studies analyzed, participants reported the level of effort they exerted as well as the extent to which they experienced unpleasant feelings such as frustration, irritation, stress or annoyance. 

Across all populations and tasks, the greater the mental effort, the greater the unpleasantness experienced by participants.

“Our findings show that mental effort feels unpleasant across a wide range of populations and tasks,” said Bijleveld.

“This is important for professionals, such as engineers and educators, to keep in mind when designing tasks, tools, interfaces, apps, materials or instructions. When people are required to exert substantial mental effort, you need to make sure to support or reward them for their effort.” 

One interesting finding, according to Bijleveld, was that while the association between mental effort and adverse feelings was still significant, it was less pronounced in studies conducted in Asian countries compared with those in Europe or North America. This fits with the general idea that the aversiveness of mental effort may depend on people’s learning history.

High school students in Asian countries tend to spend more time on schoolwork than their European or North American counterparts and may therefore learn to withstand higher levels of mental exertion early on in their lives, he said.

More important is the real-world observation that despite the aversive nature of mentally challenging tasks, people still voluntarily engage in them, said Bijleveld.

“For example, why do millions of people play chess? People may learn that exerting mental effort in some specific activities is likely to lead to reward. If the benefits of chess outweigh the costs, people may choose to play chess, and even self-report that they enjoy chess,” he said.

“Yet, when people choose to pursue mentally effortful activities, this should not be taken as an indication that they enjoy mental effort per se. Perhaps people choose mentally effortful activities despite the effort, not because of it.”

About this psychology and stress research news

Author: James Sliwa
Source: APA
Contact: James Sliwa – APA
Image: The image is credited to Neuroscience News

Original Research: Closed access.
The Unpleasantness of Thinking: A Meta-Analytic Review of the Association Between Mental Effort and Negative Affect” by Erik Bijleveld et al. Psychological Bulletin


Abstract

The Unpleasantness of Thinking: A Meta-Analytic Review of the Association Between Mental Effort and Negative Affect

Influential theories in psychology, neuroscience, and economics assume that the exertion of mental effort should feel aversive. Yet, this assumption is usually untested, and it is challenged by casual observations and previous studies.

Here, we meta-analyze (a) whether mental effort is generally experienced as aversive and (b) whether the association between mental effort and aversive feelings depends on population and task characteristics. We meta-analyzed a set of 170 studies (from 125 articles published in 2019–2020; 358 different tasks; 4,670 unique subjects).

These studies were conducted in a variety of populations (e.g., health care employees, military employees, amateur athletes, college students; data were collected in 29 different countries) and used a variety of tasks (e.g., equipment testing tasks, virtual reality tasks, cognitive performance tasks).

Despite this diversity, these studies had one crucial common feature: All used the NASA Task Load Index to examine participants’ experiences of effort and negative affect. As expected, we found a strong positive association between mental effort and negative affect. Surprisingly, just one of our 15 moderators had a significant effect (effort felt somewhat less aversive in studies from Asia vs. Europe and North America).

Overall, mental effort felt aversive in different types of tasks (e.g., tasks with and without feedback), in different types of populations (e.g., university-educated populations and non-university-educated populations), and on different continents.

Supporting theories that conceptualize effort as a cost, we suggest that mental effort is inherently aversive.