We are often in society told to make decisions in one of two ways. We're either told "Use your gut, just go with how you feel about it and let that guide you," or we're told to use reason - some very deliberative methodical process of pros and cons and really thinking it through.

I mean we might even go to war as to whether we love Coke or Pepsi and our whole identity is wrapped up in that choice. You know, for the Russians they felt that these minor differences between these various sodas was just hyped up and irrelevant.

I think that too ended up affecting a lot of the different research questions that I later asked was really was about well to what extent... How do we balance choice as possibility and choice as limitations?

So for decisions about happiness you essentially need at least both and probably even more than that, you probably also need to do analysis that doesn't involve yourself to get at the answer of what will make you happy in 10 years.

It's always a thrilling experience to go into a place that offers you a lot of choice. You know it's like it reminds you of when you're a kid and you go to the amusement park and whether it be Disneyworld or Six Flags you know that thrilling moment when you first enter and you know you've got all these possibilities for the day and it's really a... it's a wonderful feeling.

People were actually 6 times more likely to buy a jar of jam if they had encountered 6 than if they encountered 24, so what we learned from this study was that while people were more attracted to having more options, that's what sort of got them in the door or got them to think about jam, when it came to choosing time they were actually less likely to make a choice if they had more to choose from than if they had fewer to choose from.

I mean we know that some choice makes you better off than no choice. Now do we get better off if we go from a lot of choice versus a few choices? And there I think the answer is much, much, much more complicated.