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Perception of caffeine and its effects: Laboratory and everyday abilities

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Perception of caffeine and its effects: Laboratory and everyday abilities. / Blount, J. P.; Cox, W. Miles.
In: Perception and Psychophysics, Vol. 38, No. 1, 01.1985, p. 55-62.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Blount, JP & Cox, WM 1985, 'Perception of caffeine and its effects: Laboratory and everyday abilities', Perception and Psychophysics, vol. 38, no. 1, pp. 55-62. https://doi.org/10.3758/BF03202924

APA

Blount, J. P., & Cox, W. M. (1985). Perception of caffeine and its effects: Laboratory and everyday abilities. Perception and Psychophysics, 38(1), 55-62. https://doi.org/10.3758/BF03202924

CBE

Blount JP, Cox WM. 1985. Perception of caffeine and its effects: Laboratory and everyday abilities. Perception and Psychophysics. 38(1):55-62. https://doi.org/10.3758/BF03202924

MLA

Blount, J. P. and W. Miles Cox. "Perception of caffeine and its effects: Laboratory and everyday abilities". Perception and Psychophysics. 1985, 38(1). 55-62. https://doi.org/10.3758/BF03202924

VancouverVancouver

Blount JP, Cox WM. Perception of caffeine and its effects: Laboratory and everyday abilities. Perception and Psychophysics. 1985 Jan;38(1):55-62. doi: 10.3758/BF03202924

Author

Blount, J. P. ; Cox, W. Miles. / Perception of caffeine and its effects : Laboratory and everyday abilities. In: Perception and Psychophysics. 1985 ; Vol. 38, No. 1. pp. 55-62.

RIS

TY - JOUR

T1 - Perception of caffeine and its effects

T2 - Laboratory and everyday abilities

AU - Blount, J. P.

AU - Cox, W. Miles

PY - 1985/1

Y1 - 1985/1

N2 - Three studies investigated the ability to perceive caffeine via taste or bodily effects, under different concentrations and in different brands of coffee. In Experiment 1, 40 subjects ingested capsules containing 0, 200, 400, or 600 mg of caffeine. After a 90-min delay, they made magnitude estimates and category ratings of the caffeine ingested. Results showed significant linear trends between actual and judged caffeine levels. In Experiment 2, 89 subjects tasted samples of coffee with concentrations corresponding to the doses of Experiment 1. The estimated levels of caffeine again showed a significant linear relationship to actual levels. In Experiment 3, 63 subjects tasted 24 samples of coffee and judged which of two brands each sample was and whether each was caffeinated or decaffeinated. Brand, but not caffeination, was identified with better than chance accuracy. It was concluded that the ability to perceive caffeine in coffee is lost somewhere between 200 mg/cup and 50 mg/cup.

AB - Three studies investigated the ability to perceive caffeine via taste or bodily effects, under different concentrations and in different brands of coffee. In Experiment 1, 40 subjects ingested capsules containing 0, 200, 400, or 600 mg of caffeine. After a 90-min delay, they made magnitude estimates and category ratings of the caffeine ingested. Results showed significant linear trends between actual and judged caffeine levels. In Experiment 2, 89 subjects tasted samples of coffee with concentrations corresponding to the doses of Experiment 1. The estimated levels of caffeine again showed a significant linear relationship to actual levels. In Experiment 3, 63 subjects tasted 24 samples of coffee and judged which of two brands each sample was and whether each was caffeinated or decaffeinated. Brand, but not caffeination, was identified with better than chance accuracy. It was concluded that the ability to perceive caffeine in coffee is lost somewhere between 200 mg/cup and 50 mg/cup.

U2 - 10.3758/BF03202924

DO - 10.3758/BF03202924

M3 - Article

VL - 38

SP - 55

EP - 62

JO - Perception and Psychophysics

JF - Perception and Psychophysics

SN - 0031-5117

IS - 1

ER -