Daniel Kahneman tells us:
When you make your own sandwich, you anticipate its taste as you’re working on it. And when you think of a particular food for a while, you become less hungry for it later. Researchers at Carnegie Mellon University, for example, found that imagining eating M&Ms makes you eat fewer of them. It’s a kind of specific satiation, just as most people find room for dessert when they couldn’t have another bite of their steak. The sandwich that another person prepares is not “preconsumed” in the same way.
Fairly fascinating and in my case at least, it feels like this phenomenon depends on a case to case basis. Sometimes food/sandwiches I prepare for myself are bomb and just hit the spot. Other times, there’s nothing like eating out or having someone make something for you.
Curiously enough, this seems to run counter to the IKEA Effect, which postulates people derive more satisfaction/sense of accomplishment from building their own things and hence, end up loving the end product more. [via marginalrevolution]