Bright light increases honesty and leads people to perform ethical deeds
It also makes us more ethical and less selfish, researchers say
Sunday 21 July 2013
Bright lights make people more honest, altruistic and ethical, and less selfish, according to new research. Experiments showed people in a brightly lit room donated more than twice as much as those in a dim room, and were more likely to offer to help others.
“We provide the first experimental evidence showing that brightness appears to heighten the salience of morality to the individual, thereby leading people to perform ethical deeds,” say the researchers from National Sun Yat-sen University, Taiwan, who report their findings in the Journal of Environmental Psychology.
“We suggest that brightness may enhance the self-importance of morality and thereby increase ethical behaviour.” The researchers carried out a series of experiments with three levels of brightness under 12, eight, and four fluorescent lights.
In one experiment, men and women were told they were playing a game which involved sharing money between themselves and a stranger said to be in another room. Those in the brightest room offered around 15 per cent more of the cash than those in the moderately lit room, and around 30 per cent more than the people in the dimmest room.
The researchers calculated an 85.2 per cent honesty rate for people in the well-lit room, 70.4 per cent for the those in the moderately lit room, and 51.9 per for those under dim lighting.
As Voltaire once said, “Ice cream is exquisite. What a pity it isn’t illegal”
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