1. Department of Marketing, Deakin Business School, Deakin University, Burwood, Victoria 3125, Australia;
2. Booth School of Business, University of Chicago, Chicago, Illinois 60637;
3. School of Marketing, University of New South Wales, Randwick, New South Wales 2052, Australia;
4. Ehrenberg-Bass Institute for Marketing Science, University of South Australia, Adelaide, South Australia 5000, Australia