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64. Attrition of the Zeigarnik effect: role of subjects' expectancy aroused by placebos. Bhavsar VH; Jha RJ; Joshi NJ; Kelkar VV Percept Mot Skills; 1992 Dec; 75(3 Pt 2):1218. PubMed ID: 1484790 [TBL] [Abstract][Full Text] [Related]
65. Drugs and placebos: effects of caffeine on cognitive performance. Mitchell VE; Ross S; Hurst PM Psychol Rep; 1974 Oct; 35(2):875-83. PubMed ID: 4438536 [No Abstract] [Full Text] [Related]
66. [Effect of caffeine on cognitive function and psychophysiological status in man]. Shapkin SA Fiziol Cheloveka; 2002; 28(1):144-50. PubMed ID: 11855129 [No Abstract] [Full Text] [Related]
67. Effects of caffeine on sleep and cognition. Snel J; Lorist MM Prog Brain Res; 2011; 190():105-17. PubMed ID: 21531247 [TBL] [Abstract][Full Text] [Related]