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1 .This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
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2 .
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3 .A good "poker face" can hide the quality of your cards.
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4 .But your arms might still be giving away your hands.
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5 .That's the finding of a study to come out in the journal Psychological Science.
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6 .Volunteers watched videos of the World Series of Poker.
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7 .The videos were edited so the subjects saw one of three different views of the players:
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8 .the poker players' entire bodies from the table up, or just the players' faces or just the players' arms pushing chips into the pot.
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9 ."When participants were watching chips being pushed into the center of the table by the players,
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10 .it was only then could they accurately perceive how good a hand was better than chance.
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11 .They couldn't do it for the whole body and if anything they were worse from just watching the face."
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12 .Michael Slepian, a psychology doctoral student at Stanford University, and a co-author of the study.
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13 .No pros were among the video watchers.
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14 .But there's some evidence that, as might be expected, they'd be even better at catching arm cues.
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15 ."In one of our studies, the more participants were familiar with poker, even though they were all novices, the better they did."
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16 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Steve Mirsky.
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