But we don’t all think right is right, Casasanto has found. Rather, “people associate goodness with the side they can act more fluently on.” Right-handed people prefer the product, job applicant, or extraterrestrial positioned to their right. Lefties march to a left-handed drummer. And those linguistic tropes? They probably “enshrine the preferences of the right-handed majority.”
Casasanto, of The New School for Social Research, and Evangelia G. Chrysikou, of the University of Pennsylvania, wanted to find the causes of these correlations. Does motor experience “give rise to these preferences, or are they hardwired in the brain?” If the former, “how flexible are these preferences? How much motor experience does it take” to instill them?
Their surprising findings are published in Psychological Science, a journal of the Association for Psychological Science.
To investigate the first question, the researchers recruited 13 right-handed patients who’d suffered cerebral injuries that weakened or paralyzed one side of their bodies. Five remained right-handed. The rest lost their right side and became effectively left-handed. The patients were shown a cartoon of a character’s head between two empty boxes and told that he loves zebras and thinks they are good, but hates pandas and thinks they’re bad (or vice versa). Then they were asked to say which animal they preferred and which box, left or right, they’d put it in.
All the patients who were still right-handed put the “good” animal in the right box. All but one of the new lefties put it in the left.
Could these results be explained by neural rewiring? To rule out that possibility, the researchers experimented with 53 healthy righties. They asked 26 to wear a ski glove on the left hand and 27 on the right. The experimenters attached the other glove to the same wrist, letting it dangle. In a putative dexterity test, participants were instructed to pull dominos from a box, two at a time using one hand for each, and place them symmetrically on dots spaced across a table. If a domino fell, they were to set it aright with the appropriate hand only.
They were then escorted to another room and administered three questionnaires (two fillers), supposedly irrelevant to the first task. In one, the participants performed the same animal-box task as the brain-injured patients.
Three-quarters of those with ungloved right hands put the good animal in the right box, two-thirds of the temporary lefties in the left. How much motor experience did it take to switch their loyalties? About 12 minutes’ worth.
What does it all mean? “People generally believe that their judgments are rational and their concepts are stable,” says Casasanto. “But if a few minutes of gentle training can flip our judgments about what’s good or bad, then perhaps the mind is more malleable than people think.”
For more information about this study, please contact: Daniel Casasanto at email@example.com.
The APS journal Psychological Science is the highest ranked empirical journal in psychology. For a copy of the article "When Left Is ‘Right’: Motor Fluency Shapes Abstract Concepts" and access to other Psychological Science research findings, please contact Tiffany Harrington at 202-293-9300 or firstname.lastname@example.org
Tiffany Harrington | EurekAlert!
Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
19.10.2017 | Materials Sciences
19.10.2017 | Materials Sciences
19.10.2017 | Physics and Astronomy