Affiliation: | E.J. Ourso College of Business, Louisiana State University, Baton Rouge, LA 70803, USA Tel.: +1 225 578 2514; fax: +1 225 578 2511.;Weatherhead School of Management, Case Western Reserve University, Cleveland, OH 44106-7235, USA Tel.: +1 216 368 5353; fax: +1 216 368 4776. |