Scientists at the Weill Cornell Medical College have done a study and have found that people (secretaries in this case):

… ate an average of 7.7 kisses each day when the candies were in clear containers on their desks; 4.6 when in opaque jars on the desk; 5.6 when in clear jars 6 feet away; and 3.1 when in opaque jars 6 feet away.
[Read more]

So, if you want to stop eating so much candy, put it where you can’t see it! Makes sense. For me though, if I have the munchies and I know candy is around (whether I can see it or not), the candy gets eaten.

Candy jar study [via BoingBoing]