I think that could lead to an interesting research. Then again, you have to keep in mind most advertising is meant to elicit an emotion, which is why car ads are never about the car itself and more about you being "free" or "adventurous" or whatever thanks to the car; or why beer commercials are about fun, parties and sports despite them tasting like shit. Things that you remember more easily when you're buying groceries, so you're more likely to go with that brand over another.

I don't think they work with me, tho. This is their holy grail, convincing you while making you think you made that choice all by yourself.