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Caffeine On Reaction Time Experiment

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Introduction
The experiment was conducted as part of our stage 1 psychology unit on brain and behaviour where we explored the effects of caffeine on the reaction time of participants. Research surrounding caffeine is important to know the effects Caffeine affects the human body by increasing alertness and reduces fatigue as a result of stimulating the brain. In this experiment, the independent the amount of caffeine subjected to each individual in each group and the dependent variable was the reaction time tested and recorded for each person. There was 1 control group (group c) and 2 treatment group Treatment Group A and B. The control group consumed 0% of caffeine compared to Treatment Group A which consumed 100% of caffeine and group B consumed …show more content…
However, treatment group 2 was slightly faster among the ‘no caffeine group’, and the 100mg caffeine group.
Graph 2 Graph 2 shows that the 50mg caffeine group (group 2) had a significantly faster reaction time than the ‘no caffeine group’ and the 100mg caffeine group (group 1). However, the ‘no caffeine group’ had a slight faster reaction than the 100mg caffeine group (group 1)
Discussion
The results do not support the hypothesis that reaction time will be faster amongst treatment group participants was not supported. The mean score of treatment group (100%) was higher than control group, which indicates that participants who consumed caffeine actually took longer to respond. The mean score of the treatment group A(0.33) was slower than the control group (0.28) which indicates that those who consumed 0% of caffeine had a faster reaction time than those that consumed 100% …show more content…
Another possible reason is that the experimenter may have not waited long enough as it can take longer for the effects of caffeine to kick in for each individual. It takes up to 45 minutes for 99% of caffeine to be absorbed through the entire body. Research suggests that about 10% of the human population are hyposensitive to caffeine this means they process caffeine so regularly that it does not have much effect (Ted,

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