The only real problem with that test is that any activity could be inserted instead and you'd get the same results. TV, eating, exercising, driving, etc. I mean, would yoe rather eat or be intimate with your partner? Depends on how hungry I am. How often do you form new relationships over dinner? Hmm... I've met quite a few people at dinner. Do you often eat more than you should? Yip. Does your studying time suffer because you really NEEDED that pizza? Yip.
I guess I must have a weight problem, oh wait, I'm only 140. Hmmmm.