Accession Number : AD0727272

Title :   Test Performance and Subjective Feelings as Modified by Caffeine-containing and Caffeine-free Coffee,

Corporate Author : KAROLINSKA INSTITUTET STOCKHOLM (SWEDEN) DEPT OF PHYSIOLOGY

Personal Author(s) : Froeberg,J. ; Karlsson,C. -G. ; Levi,L. ; Linde,L. ; Seeman,K.

Report Date : 1968

Pagination or Media Count : 7

Abstract : An experiment is reported in which 72 students received caffeine-free or caffeine-containing (750 mg) coffee, half of each group being told the truth about the type of coffee served, and the other half being given false information. Performance and subjective feelings were measured over a period of 6 hours. From the results it is concluded that caffeine did improve performance in a cancellation task, while subjective arousal was not much influenced in spite of the fact that the caffeine dose was rather impressive. Information concerning caffeine content seemed to influence performance somewhat, but had no effect whatsoever on subjective variables. (Author)

Descriptors :   (*COFFEE, *EMOTIONS), (*PURINE ALKALOIDS, PERFORMANCE(HUMAN)), ATTENTION, SWEDEN

Subject Categories : Pharmacology

Distribution Statement : APPROVED FOR PUBLIC RELEASE