How to interpret one study about eating in front of a mirror

It seems like a disarmingly simple suggestion, but installing a mirror in the dining room and kitchen could be the best way to avoid piling on the pounds.
A new study suggests that when diners gaze at their own reflection, they literally, watch what they eat.
It is one of a number of simple behavioural tricks, which according to food psychologists at the University of Central Florida can prevent overeating.
“A glance in the mirror tells people more than just about their physical appearance, helps them to judge themselves”
Dr Ata Jami, University of Central Florida
They also advise eating from smaller, less fancy or even paper plates, using a fork instead of a spoon and skipping dinner if you do not feel hungry.

(source & more on this » How a mirror in the dining room could help you eat less – Telegraph)

What’s one possible issue with the above situation?

• The study focuses on some specific conditions. Sure, if I know people are watching me, and if you put a mirror in front of me I feel a discomfort and not very well. If you add to that the pressure of a mirror, I have even more pressure to follow what I think is right.
• On another hand, if I decide to put a mirror in my kitchen, the results might differ, because after a while the situation for me might be different.
• Also, there’s a difference between what a person will do the first time it eats in front of a mirror and how does that person behave after doing so for years.

I’m not saying the study is wrong, I’m just saying that whenever you hear that „study X says so-and-so”, you should try to understand all the implications.

I think the study holds value, but you have to dig deeper.