Sachiko Nadia Rahmadani, - (2026) The Effects of Caffeine on Mood and Cognitive Performance. Repository Universitas Airlangga. (Unpublished)

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Abstract

Caffeine is a widely consumed psychoactive stimulant that affects the brain and nervous system. This study used a double-blinded, randomised, between-subjects design to confirm the effects of caffeine on mood and cognitive performance. Mood was assessed using the Profile of Mood States, focusing on depression and tension. Cognitive performance was assessed using the Parametric Go/No-Go task, focusing on reaction time and target identification accuracy. This study included 55 participants aged 19 to 49 years. Participants abstained from caffeine consumption six hours prior to the session. Thirty participants received 200mg of caffeine, while 25 received placebo of 0mg caffeine. Results showed no significant effects of caffeine on depression, tension, and identification accuracy. However, the caffeine group demonstrated significantly lower reaction times than the placebo group. These findings suggest that caffeine may enhance reaction time in some individuals, but does not influence mood or cognitive performance.

Item Type:	Article
Uncontrolled Keywords:	Caffeine, Cognitive Performance, Mood
Subjects:	B Philosophy. Psychology. Religion > BF Psychology B Philosophy. Psychology. Religion > BF Psychology > BF1-940 Psychology B Philosophy. Psychology. Religion > BF Psychology > BF180-205 Experimental Psychology
Divisions:	11. Fakultas Psikologi > S1 Psikologi
Creators:	Creators NIM Sachiko Nadia Rahmadani, - NIM112111133046
Contributors:	Contribution Name NIDN / NIDK Contributor Atika DianAriana, - NIDN0004038302
Depositing User:	Sachiko Nadia Rahmadani
Date Deposited:	05 Feb 2026 01:49
Last Modified:	05 Feb 2026 01:49
URI:	http://repository.unair.ac.id/id/eprint/140228
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