Hey guys. My friend is in need of finding an independent variable for his science fair project. His project is testing which variables have the greatest effect on a person's hand-eye co-ordination. His current variables are sugar, soothing music, and caffeine, BUT he is looking to replace caffeine with another variable (as he believes some test subjects will refuse to drink coffee). Thanks for the advice!Need help finding an independent variable for a science fair project!?
cant think of anything with the same effect as coffee besides soda, energy drinks, and sugar.
But liquorish is proven to calm the senses, which might be a good variable.Need help finding an independent variable for a science fair project!?
light
amount/quality of sleep
exercise
natural instinct
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