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While research shows that organic labels are perceived positively for most food products, the findings are more ambiguous for wine. This may be due to the complexity of the product. Accordingly, the labelling effect might be influenced by people's prior knowledge of wines and their attitudes towards organic wines and thus be more pronounced for certain consumer groups. Providing insights into those moderators could help to steer people towards sustainable wine consumption. Therefore, this paper aims to investigate the effect of organic labelling on consumers' liking of, and their willingness to pay (WTP) for white wine, and the role of potential moderators.

A wine tasting experiment was conducted using a within-subjects design (n = 214). The mediating role of expected liking and the moderating roles of subjective knowledge and attitude towards organic wine were analysed using the MEMORE macro in SPSS.

The results do not confirm an overall positive halo effect of labelling on liking of organic wine. Nevertheless, a positive halo effect on actual liking was observed for those respondents who have a positive attitude towards organic wine. Furthermore, an overall positive effect of organic labelling on WTP was found. Mediation effects could not be confirmed.

This study used an experimental design that considers not only expected liking but also actual liking and WTP for organic wines. Using a moderation-mediation framework helps to better understand consumers' quality evaluation and WTP for organic wine. Finally, it could be shown that the organic halo is more complex for the product category of wine than others have previously stated.

The purpose of this paper is to enhance the understanding about the determinants of consumer food leftovers in out-of-home settings by taking a decomposed perspective on attitudes.

Data on 307 guests in a university canteen composing of stated measures for 12 beliefs, general attitude and behavioral intention and of visually estimated food leftovers are analyzed using exploratory factor and path analyses.

A factor analysis for belief statements derives three distinctive and potentially conflicting attitude dimensions: “Environment,” “Self-Interest” and “Resources.” Path analyses on their interrelation with general attitude, intention and behavior indicate that the dimensions have distinctive effects. Moreover, “Self-Interest” in contrast to the other two dimensions is correlated with situational perceptions about portion size and taste when these are included as direct determinants of leftovers.

It is recommended to consider different dimensions of attitude when addressing food leftover behavior since these dimensions may not be well represented in a classical summary construct and since their relevance may differ depending on situational factors. Additional research is recommended to validate the results for more representative samples of consumers and to elaborate on the interaction of different attitude dimensions as potential source of attitude ambivalence which cannot clearly be determined from the existing data.

Past research on consumer food waste behavior models attitudes exclusively as a summary construct. This contradicts qualitative findings that individuals may hold conflicting beliefs about food leftovers.