Endorsements: How Sports Stars Get Inside Your Head

Buick recently ended its $3 million per year relationship with golfer Tiger Woods. Then NBA star LeBron James lost his connection with Microsoft after less than two years promoting the company. Finally, David Beckham's endorsement deal with Pepsi went flat.

All three companies blamed the struggling economy. Was that the reason, or were these endorsements doomed from the beginning? For years, researchers have tried to develop models to explain consumer behavior and our emotional reactions to celebrity endorsers. Matching the right spokesperson to the right product is the key.