I like the experiment but note that the findings would be confounded somewhat. Heavy coffee drinkers have been found to get an increased performance on tasks requiring alertness just from the smell! They get another boost once the caffeine actually gets digested and flows to the brain but it may be difficult to establish a negative finding if both the decaff and caffeinated seem to give an effect.
I like the experiment but note that the findings would be confounded somewhat. Heavy coffee drinkers have been found to get an increased performance on tasks requiring alertness just from the smell! They get another boost once the caffeine actually gets digested and flows to the brain but it may be difficult to establish a negative finding if both the decaff and caffeinated seem to give an effect.