Sentences with phrase «author of the bestseller contagious»

But all contain triggers that get people talking, says Jonah Berger, marketing professor at the Wharton School at the University of Pennsylvania and author of the bestseller Contagious: Why Things Catch On.

According to Wharton marketing professor Jonah Berger, author of the bestseller Contagious, word - of - mouth is 10 times as effective as traditional advertising.