Excerpt: [N]ew Wharton research suggests that a compensation structure based on long-term escrow accounts could be better -- at least for a company's future -- than the common practice of rewarding short-term changes in share price. Wharton finance professor Alex Edmans and a group of colleagues propose linking an executive's compensation to the performance of the firm over a longer horizon. Their method also takes into account changing conditions within the firm.  MORE >>