psychology of product development

In order to be a successful marketer, or new products development person, you must study the psyche.

It holds the key to understanding not only consumer behavior, but what essential needs humans must fulfill in order to be happy. Emotions are the things that control human impulse, for better or worse.
For example,

[ Click here .]

If I write this attractively, you are prone to click on it out of curiousity. What lies beyond it?

Similarly, if I confuse you first, or make an unclear suggestion, you will want to resolve it in your mind. The mind must fulfill the big picture, and it is curiosity that allows us to survive.

This is what is needed in product development. Yes, there are some products that get by because the box is nice, but it eventually will stop bringing in sales. This is why function is most important, in my opinion.