'All' they had to do was to ask ANY teenager!!!!
Therefore, I ask now, what 'obvious' things can we all get some School or other agency to 'waste' money on us 'studying' this obviousness???
I will start; How about a study 'proving' that chicken soup is what cures the common cold? Since I have also heard that tequila and a blanket also cures it, how m,ujch money do you think we can get for THAT study?