Purpose -A lot of literature is available that discusses personal determinants of organic food consumption. However different models and determinants are used in the literature. This paper aims to provide an overview, within a framework linking Schwartz' values theory and the theory of planned behaviour (TPB). Also it seeks to focus on the importance of affective attitude, emotions, personal norm, involvement and uncertainty related to organic food consumption. Design/methodology/approach -The paper is based on secondary data sources, namely the literature concerning personal determinants of organic food consumption. Findings -Both the values theory and the theory of planned behaviour have been referred to as relevant theories for better understanding consumers' choice for organic food. Organic food consumption decisions can be explained by relating attributes of organic food with more abstract values such as "security", "hedonism", "universalism", "benevolence", "stimulation", "self-direction" and "conformity". Appealing to these values can positively influence attitudes towards organic food consumption. Besides attitude, subjective and personal norm and (perceived) behavioural control influence consumption of organic food. Research limitations/implications -More research related to the role of uncertainty (reduction) during the process of buying organic food is recommended. Practical implications -Relatively little research has examined the affective component of attitude and emotions in relation to organic food consumption, while these may play an important role as drivers of involvement and thus help to jolt food purchasers out of their routine of buying conventional food and set a first step to adopt organic food. Originality/value -To the authors' knowledge, this is the first paper providing a comprehensive overview and linking the literature on organic food consumption to the values theory and the theory of planned behaviour, including the role of personal norm and focusing on emotions. The proposed integration of mental processing in an organic food consumption model leads to interesting hypotheses and recommendations for policy makers, researchers and stakeholders involved in the organic food market.

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.com Emerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services. Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. Abstract Purpose-The purpose of this paper is to understand how information revealed on organic food labels and perceived organic knowledge drive consumer trust and attitudes towards organic foods, which in turn together with subjective norm eventually influence subsequent purchase intentions. Design/methodology/approach-The questionnaire surveys were administered to customers at four urban large-scale supermarkets and three health food stores at three major cities in Taiwan. In total, 693 valid questionnaires were obtained, yielding a response rate of 81.5 per cent. Findings-Trust, serving as the antecedent of attitudes, significantly mediates the relationships between revealing information, perceived knowledge, and organic purchase intentions. Additionally, both attitudes towards organic foods and subjective norm significantly influence consumer organic food choices. However, the impact of perceived organic knowledge on consumer attitudes has been found to be insignificant, indicating that the increase in perceived knowledge cannot create positive attitudes towards organic foods. Thus, a focus on how to use knowledge to enhance consumer trust in organic foods is suggested as an effective marketing strategy for the organic food industry. Research limitations/implications-The research findings support that trust and attitudes play the mediating roles linking revealed information and perceived knowledge with organic food purchase intentions. This result is consistent with previous studies, indicating that better organic labeling information and related knowledge perceived by consumers have critical effects on consumer trust in organic foods, which in turn will influence their attitudes and intentions to purchase organic foods. However, this study also found that perceived knowledge can generate positive attitudes only when trust can be firmly built. This confirms the essential role of trust in the process of consumer organic buying intentions. Practical implications-First, providing credible labeling information by displaying how organic agricultural products are grown, processed, and handled, and the percentage of organic ingredients in a product is crucial to stimulate consumer tru...

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The materials balance condition is a fundamental adding up condition, which essentially says that: ''what goes in must come out''. In this paper we argue that a number of the recently developed methods of incorporating pollution measures into standard productive efficiency models may be inconsistent with this fundamental condition. We propose an alternative method that involves the incorporation of the materials balance concept into the production model in a similar manner to which price information is normally incorporated. This produces a new environmental efficiency measure that can be decomposed into technical and allocative components, in a similar manner to the conventional cost efficiency decomposition. The approach is illustrated with the case of phosphorus emission on Belgian pig-finishing farms, using data envelopment analysis (DEA) methods. Our results indicate that a substantial proportion of nutrient pollution on these farms can be abated in a cost reducing manner.

Purpose -This paper aims to perform a meta-analysis of the literature comparing the environmental impacts of organic and conventional farming and linking these to differences in management practises. The studied environmental impacts are related to land use efficiency, organic matter content in the soil, nitrate and phosphate leaching to the water system, greenhouse gas emissions and biodiversity. Design/methodology/approach -The theoretic framework uses the driver-state-response framework and literature data were analysed using meta-analysis methodology. Meta-analysis is the statistical analysis of multiple study results. Data were obtained by screening peer reviewed literature. Findings -From the paper's meta-analysis it can conclude that soils in organic farming systems have on average a higher content of organic matter. It can also conclude that organic farming contributes positively to agro-biodiversity (breeds used by the farmers) and natural biodiversity (wild life). Concerning the impact of the organic farming system on nitrate and phosphorous leaching and greenhouse gas emissions the result of the analysis is not that straightforward. When expressed per production area organic farming scores better than conventional farming for these items. However, given the lower land use efficiency of organic farming in developed countries, this positive effect expressed per unit product is less pronounced or not present at all. Original value -Given the recent growth of organic farming and the general perception that organic farming is more environment friendly than its conventional counterpart, it is interesting to explore whether it meets the alleged benefits. By combining several studies in one analysis, the technique of meta-analysis is powerful and may allow the generation of more nuanced findings and the generalisation of those findings.

This paper explores the willingness of Belgian farmers to participate in two voluntary agri-environmental policies. Farmers' contingent behaviour is analysed on the basis of survey data. Derivations based on a conceptual micro-economic model indicate that decision subject and decision maker characteristics are important for farmers' participation. The model is empirically tested through the specification and estimation of a probit model. Consistency is found between the theoretical framework and the empirical results indicating that both the expected effect on farm production and the farmers' environmental attitude, which is more positive among younger and better educated farmers, are significant determinants of the acceptance rate of agri-environmental policies. Other variables which influence participation decisions are farm size and previous experience of farmers themselves or of neighbouring farmers with agri-environmental measures.

In this contribution we try to look at the new role for agriculture in rural areas by reviewing the concept of multifunctional agriculture as well as the analytical frameworks used. Next, we review the existing evidence about the multifunctional role of farming. Although not overwhelming, the existing literature shows that agriculture contributes to the rural wealth not only through the production of commodities, but also by the delivery of non-tradable goods. This contribution can be both direct through increased values for properties or economic benefits in the tourism sector, but also indirect through conservation of rural heritage or agriecological systems. Next we focus on how this role of agriculture can be stimulated. It is argued that multifunctionality can be a unifying principle to bring the productive and non-productive functions into harmony. This requires the development of new institutional arrangements and a major change in policy incentives.

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