of course in the end everyone says 'content' of which i agree, but you all have to admit, a book is only as good as its cover when youre shopping--- you tend to gravitate towards the prettily packaged stuff and thats when you realize whether the stuff inside is worth buying.
which is why the study makes sense, and times are not changing necessarily... advertising is one of the biggest money making businesses in the world in the U.S alone we bring in about 2 billion from advertising alone, which is enough to feed at least 3 3rd world countries, and i think that goes to say that packaging means a lot.
another thing, most of you could look at it like your boyfriend, and realize that before you started talking to him (and realized what a great person he is), you were probably attracted to him right?