Caffeine and Reaction Time Study Results

Hard Research Summaries Interpreting Results

Researchers aimed to determine the influence of different caffeine concentrations on reaction time. They conducted an experiment with 30 participants, dividing them into three groups based on caffeine dosage: low (50 mg), moderate (150 mg), and high (300 mg). Participants completed a simple reaction time test after consuming their assigned dosage.

Upon analyzing the results, the researchers found that the average reaction time of participants in each group was as follows:

Low dosage (50 mg): 240 ms
Moderate dosage (150 mg): 210 ms
High dosage (300 mg): 230 ms

Based on these results, which conclusion can be drawn regarding the effect of caffeine on reaction time?

Higher caffeine dosages consistently increased reaction time.

The moderate caffeine dosage resulted in the fastest reaction time.

Low caffeine doses had no significant impact on reaction time.

There was no noticeable difference in reaction time across all groups.

Hint

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