Poverty impairs cognitive function

[pt716]

Poverty consumes so much mental energy that those in poor circumstances have little remaining brainpower to concentrate on other areas of life, new research finds. As a result, those with few resources are more likely to make bad decisions that perpetuate their financial woes.

Published in the journal Science, the study suggests our cognitive abilities can be diminished by the exhausting effort of tasks like scrounging to pay bills. As a result, less “mental bandwidth” remains for education, training, time-management, and other steps that could help break out of the cycles of poverty.


UBC Prof. Jiaying Zhao

“Previous accounts of poverty have blamed the poor for their personal failings, or an environment that is not conducive to success,” said lead author Jiaying Zhao, a University of British Columbia professor who conducted the study as a graduate student at Princeton University. “We’re arguing that being poor can impair cognitive functioning, which hinders individuals’ ability to make good decisions and can cause further poverty.”

[Editors: UBC Prof. Jiaying Zhao is unavailable on Aug. 29 after 3 pm EST due to an international flight. A colleague from Princeton University is available in her place.]

In one set of experiments, the researchers found that pressing financial concerns had an immediate negative impact on the ability of low-income individuals to perform on common cognitive and logic tests. On average, a person preoccupied with money problems exhibited a drop in cognitive function similar to a 13-point dip in IQ, or the loss of an entire night’s sleep.

In another series of field experiments, the researchers found that farmers show diminished cognitive performance before getting paid for their harvest, compared to after when they had greater wealth. These differences in cognitive functioning could not be explained by differences in nutrition, physical exertion, time availability or stress. According to the study, the mental strain of poverty differs from stress, which can actually enhance a person’s functioning in certain situations.

Background

Zhao’s study co-authors include Eldar Shafir (Princeton University), Sendhil Mullainathan (Harvard University) and Anandi Mani (University of Warwick). The paper, “Poverty impedes cognitive function,” was published online Aug. 29 by Science and is available upon request.

According to Shafir, the fallout of neglecting other areas of life may loom larger for a person just scraping by. Late fees tacked on to a forgotten rent, a job lost because of poor time-management — these make an already-tight money situation worse. And as people get poorer, they tend to make desperate decisions, such as excessive borrowing, that further perpetuate their hardship, he says.

The researchers suggest that services for the poor should better accommodate the strain that poverty places on a person’s mind. Such measures would include simpler aid forms and more guidance to receiving assistance, or training and educational programs structured so that missed classes aren’t as detrimental.

“When [people living in poverty] make mistakes, the outcomes of errors are more dear,” says Shafir. “So, if you are poor, you’re more error prone and errors cost you more dearly — it’s hard to find a way out.”

Jiaying Zhao is UBC’s Canada Research Chair in Behavioural Sustainability and a professor in the Dept. of Psychology and Institute of Resources, Environment and Sustainability.
news.ubc.ca/2013/08/29/poverty-impairs-cognitive-function/

[rugbywife]

I am not surprised. Mental health is now one of our main initiatives as a school board (and throughout the province) since research shows that stress = cortisol = reduced intellectual ability. Hard not be stressed or suffering from mental health when you live in poverty.

[BNL2]

This article helps me understand my family a little better, particularly my brother. His decision making skills have become poorer and poorer over the years, and so has his financial situations. This gives insight on why he does things that make me say "he knows better than that."

This also makes me worry about my niece who is in her senior year of HS and should be prepping for college. My brother's family recently moved in with my mom an money is very tight. She's a good student and a great kid but now I'm concerned the stress she's dealing with could undo all of her hard work.

[stealthmom]

Yep, Maslow was right. But I like that they actually found supporting evidence for the theory in real-world situations.

[emptygee]

Aug 31, 2013 11:15:52 GMT -5 incogneato said:

Not surprising, but nonetheless.

My students struggled a lot when their home life was extra stressful. I would watch kids completely stall out in their learning when a parent got arrested, or they had to move to a new apartment (usually moving in with friends or family and making for crowded living) or even when a new sibling was born. Stress (even good stress, but especially bad) definitely affects cognition.

I think you're missing the point. The study was specifically about the effect of poverty on cognitive functioning, not the effect of stress. In fact, it specifically differentiates between stress and poverty and says that stress doesn't have the same effect. I think what you're describing is just the natural consequence of kids being distracted by life events and not focusing on their schoolwork.

[blacksred]

Speaking from experience it is very hard to focus all day when you are hoping, praying and thinking will the gas or lights be cut off before i can get home to a phone to beg for more time.