Two Wharton researchers have developed a mathematical model that they say will allow companies for the first time to predict at what pace new products will gain acceptance in markets where purchasing decisions by knowledgeable influential customers sway the buying habits of others. Wharton marketing professor Christophe Van den Bulte and doctoral student Yogesh V. Joshi say their model can be put to use in industries as diverse as movies music pharmaceuticals and high-technology. Their findings are presented in a paper titled ”New Product Diffusion with Influentials and Imitators.”