Effect of caffeine on prospective and re
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Ronald P. Gruber; Richard A. Block
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Article
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2003
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John Wiley and Sons
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English
β 93 KB
π 1 views
## Abstract The effects of caffeine on prospective and retrospective duration judgements were evaluated in a doubleβblind placeboβcontrolled experiment. After taking either 200βmg caffeine or a placebo, participants touched a 17βsided polygon for 15βs. Then they verbally estimated the number of ang