Here's Why Every Entrepreneur Should Study Psychology

Salespeople have used psychological principles to increase their sales, as well as customer satisfaction, for decades. 

Yet when it comes to entrepreneurs who want to build their businesses, they're far more likely to pick up a book on product development or marketing than they are on psychology. But why aren't more entrepreneurs including psychology in their research when it could significantly help their business?

Image: Ryan Hornby, Founder of Hornby Property Ltd., a property investment, development, and management ... [+]