Some People Choose Smaller Meals When Offered

Some don't. So?

Offering downsized meal portions in addition to normal ones at cafeterias may help some people cut their calorie intake, Dutch researchers say.

They say the smaller portions could work in other settings, too, and might help curb obesity, although it's too soon to know if people compensate by eating more the rest of the day.

Seems like a critical piece of missing information.

Why bother doing this garbage study, then?