“…Previous empirical studies of the effects of voluntary and/or of mandatory product labeling in the food sector have tended to focus on the provision of nutritional information and exhibit mixed results regarding effectiveness of information provision (see, for example Ippolito and Mathios, 1990, Mojduszka and Caswell, 2000, Ippolito and Mathios, 1995, Mathios, 2000, Teisl, Bockstael, and Levy, 2001. Evaluating ecolabels, Teisl, Roe, and Hicks (2002) report that dolphin-safe labels resulted in changes in aggregate tuna consumption, and Jin and Leslie (2003) conclude that consumer demand is sensitive to mandatory and voluntary display of hygiene quality grade cards in the Los Angeles restaurant market.…”