A glove on your hand can change your mind

March 10, 2011
A glove on your hand can change your mind. Participants wore a bulky ski glove on one hand, with the other glove dangling from the same wrist, while arranging dominoes on a table. Right-handers who wore the glove on their right hand became functionally left-handed, causing them to make good-bad judgments like natural left-handers. © Max Planck Institute for Psycholinguistics

(PhysOrg.com) -- Unconsciously, right-handers associate good with the right side of space and bad with the left. But this association can be rapidly changed, according to a study published online March 9, 2011 in Psychological Science, by Daniel Casasanto (Max Planck Institute for Psycholinguistics) and Evangelia Chrysikou (University of Pennsylvania). Even a few minutes of using the left hand more fluently than the right can reverse right-handers' judgments of good and bad, making them think that the left is the 'right side' of space. Conceptions of good and bad are rooted in people's bodily experiences, and change when patterns of bodily experience change.

In language, positive ideas are linked with the right side of space and negative ideas with the left. It's good to be 'in the right', but bad to be 'out in left field'. Space and goodness are also associated in the unconscious mind, but not always in the same way that they are linked in language. For right-handers, right is good, but for left-handers, left is good.

In experiments by psychologist Daniel Casasanto, when people were asked which of two products to buy, which of two job applicants to hire, or which of two alien creatures looks more intelligent, right-handers tended to choose the product, person, or creature they saw on their right, but most left-handers chose the one on their left.

Why do righties and lefties think differently? Casasanto proposed that people's conceptions of good and bad depend, in part, on the way they use their hands. 'People can act more fluently with their dominant hand, and come to unconsciously associate good things with their fluent side of space.'

To test this theory, Casasanto and colleagues studied how natural right-handers think about good and bad when their right hand is handicapped, either due to or something much less extreme: wearing a ski glove. completed a task that reveals implicit associations between space and goodness in healthy participants. Patients who had lost the use of their left hand showed the usual right-is-good pattern. But patients who lost the use of their right hand following damage to the left-hemisphere of the brain associated good with left, like natural left-handers.

The same pattern was found in healthy university students who performed a motor fluency task while wearing a bulky glove on either their left hand (which preserved their right-handedness) or on their right hand, which turned them temporarily into left-handers. After about 12 minutes of lopsided motor experience, the right-gloved participants' judgments on an unrelated task showed a good-is-left bias, like natural left-handers.

'People generally think their judgments are rational, and their concepts are stable,' says Casasanto. 'But if wearing a glove for a few minutes can reverse people's usual judgments about what's good and bad, perhaps the mind is more malleable than we thought.'

More information: Casasanto, D., & Chrysikou, E. (2011). When Left is 'Right': Motor fluency shapes abstract concepts. Psychological Science. doi:10.1177/0956797611401755

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TheGhostofOtto1923
4.2 / 5 (5) Mar 10, 2011
So much for the concept of free will, eh? More philo poetry bites the dust.
brad_levy
5 / 5 (2) Mar 10, 2011
This doesn't surprise me. If two items we are asked to choose between are otherwise equal in all respects, it would seem natural that the brain would choose the one that it is easiest to connect with under current circumstances. The underlying decision rule wouldn't be changing, just being applied. I don't think it reflects malleability of the brain as much as whether the brain is making the decision based on repetitive habit/dominance or current input. Perhaps in this case the brain is being more rational than sometimes being given credit for. It'd be an interesting area for further study.
StillWind
2.3 / 5 (3) Mar 10, 2011
I think that there is alot more here than meets the eye. I'd love to see how this was performed, and where the people came from that took part in the "test". Different cultures have different ideas about these things, which can have a major effect on the results.
Really looks like more junk science to me.
James_Absconditus
3 / 5 (1) Mar 10, 2011
'But if wearing a glove for a few minutes can reverse people's usual judgments about what's good and bad, perhaps the mind is more malleable than we thought.'

Does the glove make people agree that murder is good? How about rape or theft?
ironjustice
not rated yet Mar 11, 2011
This gives credence to the 'home remedy' of tying the left hand to the body in order to right handededness in your child.
cyberCMDR
not rated yet Mar 11, 2011
The Romans knew this. They called the left side "sinister", which has come into English with its darker interpretation. The right side, which most people used to manipulate things, was called "dexter", from which we get "dexterous".
ekim
not rated yet Mar 11, 2011
Does the glove make people agree that murder is good? How about rape or theft?

This has OJ all over it.
frazzical
not rated yet Mar 14, 2011
I'm ambidextrous. This must be why I'm so indecisive.

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