Scientists assigned 66 subjects to one of two groups. Half got a 200-milligram caffeine tablet, a dose equal to almost three cups of coffee. The other half received a sugar tablet. Thirty minutes later the volunteers were shown strings of letters, and had to decide as fast as they could if a string formed a word or was just gibberish.
The volunteers recognized words with positive associations much faster than either negative or neutral words.
Other studies have shown that positive words tend to be recognized more quickly, but the caffeine increases the gap.
So next time you wake up with a grumpy sweetheart, your compliments might be appreciated more if they have a cup of coffee.
—Christie Nicholson
