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Consumers often form beliefs about credence attributes unsupported by the best available evidence. In particular, prior research has revealed many consumers have overly‐optimistic beliefs about the environmental and nutritional impacts of organic food. We propose and study the effects of a sustainability facts label (SFL), which displays quantitative environmental information related to global warming potential, land use, and energy use per serving size of the product. The SFL is akin to a nutrition facts label (NFL), which we also study. We surveyed a nationally representative sample of milk consumers in the United States (USA) to measure their choices and beliefs about organic vs. conventional milk under one of three different label information treatments; the NFL only, the SFL only, and both labels relative to a control without any nutrition or sustainability information. Unexpectedly, our results show that the SFL increased the likelihood of organic purchases. Facts panels altered beliefs; The participants exposed to the SFL increased their perception that organic performs better on environmental metrics, despite the fact the information contained in the label provided a nuanced picture with organic better in some dimensions and worse in others. Consistent with the information provided, consumers exposed to the NFL decreased their perception that organic had fewer calories and more protein than conventional milk. Prior beliefs about organic were found to be important determinants of choice and information acquisition. [ABSTRACT FROM AUTHOR]

Support for organic farming is a promising policy for improving sustainability in the food sector. Further consumer demand, however, is hindered by high prices. We review research from 2000 to 2014 on the role of perceived price, income, price knowledge, willingness to pay, and reactions to price changes on organic food. We find that price is the major perceived barrier to purchase. Income is only a partial explanatory factor and is superseded by psychographic variables. Willingness to pay a premium is around 30% (ranging from 0% to 105%) and depends on consumer segments and product category. Price knowledge is vague, and organic consumers' price sensitivity is relatively lower than that of occasional or nonorganic consumers. The results suggest that further market differentiation in terms of organic consumer segments and food categories is necessary. Furthermore, we discuss detailed implications for public policy and practice and present a future research agenda. [ABSTRACT FROM AUTHOR]