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'Like' This Article Online? Your Friends Will Probably Approve, Too, Scientists Say
By KENNETH CHANG
A positive nudge can set off a bandwagon of approval, researchers
found, but negative reaction does not spur others to "dislike."
*****科學刊物還是需要顧客認同
*****著名科學家的一組多樣的書評.序文和小品文
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