No such luck — Justin swore he wasn’t dating anyone!

To really understand what people prefer, you need to pair men and women randomly in an experimental dating service and document the decisions they make. Speed dating is matchmaking on, well, speed—each male-female pair (we stuck to heterosexual couples) meets for four minutes to size each other up, at which point a whistle blows, signaling the men to get up and move on to the next woman.

And so for a couple of years at a local bar just off the Columbia campus, I ran a speed-dating experiment with two psychologists, Sheena Iyengar and Itamar Simonson, and fellow economist Emir Kamenica. After each "date," participants decide if they'd like to see their partner again.

For our study, we also asked them to rate their partners' intelligence, looks, and ambition after each meeting.

Each event had between 10 and 20 daters of each gender, and in the course of the evening, every man met every woman and vice versa.

It’s interesting to see Justin with a girl, considering he told Ellen De Generes on the December 5 episode of Ellen that he wasn’t interested in dating!

Ellen asked him the hardball questions, trying right away to find out who he was dating.

The dress is a little on the summery side now with exposed shoulders and in a white hue, which is probably why it is now sold out. Or get the off shoulder look in one of the picks in the line up below.

Add a leather jacket and suede over the knee boots to give it more of a wintry edge.

Doctors marry doctors, lawyers marry lawyers, and economists marry economists, probably not because they actually prefer to do so, but because those are the people they meet in daily life.