reciprocation

Rapper Jay-Z used a classic influence principle for non-profit persuasion.

If you can get a small favor from someone, they are more likely to grant you a bigger one.

We all need to ask for favors from time to time, and here are seven ways to make your request more likely to succeed.

Reciprocity is a powerful tool in sales and marketing, and the exchange of favors are often of different magnitude.

If you attend conferences, you'll encounter lots of people doing things to get your business card. Walk the aisles of an exhibit hall, and you'll see fishbowls for iPad raffles, booth babes handing out t-shirts... all for the price of a…