Lauxa,
Another thing to consider is that the paths theaters all have pictures that relate to that module. It's quite possible that staring at a picture of a thin person for 3 minutes once a week could have side effects of 1) making the subject think more about being thin, or, if they are not thin and don't feel good about it, 2) lower self esteem.
In order to work around that, you would need to keep the screen blank like they said they did in the tanning experiment.
Rebecca
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