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The purpose of this paper is to analyse the effect of attitudes and socio-demographics on wine consumers’ real purchase behaviour for organic wine.

This study is based on GfK household panel data, a real market data source of high population coverage. A two-part fractional model was applied as two distinct categories of wine buyers were observed. The first part of the two-part fractional model consisted of a standard binary choice model and defined the likelihood of belonging to the group of organic wine buyers. The second part of the model only took organic wine buyers into account and described their purchase intensity.

Preferences for organic products and sustainability concerns (e.g. environmental and social concerns) drive organic wine purchases. Proving a causal relation between attitudes and purchase behaviour gives evidence that stated preferences are a reliable indicator to predict consumer behaviour. However, the weak relation between attitudes and behaviour confirms the existence of an attitude-behaviour gap.

Quality benefits of organic wine production need to be communicated to attract new customers. Stronger focus should be put on sustainability issues with the aim of encouraging organic customers to also increase their expenditures for organic wine.

The influence of sustainability concerns on purchase behaviour is still controversial and no study, so far, has analysed real purchase data for organic wine. The results provide new insights on why attitudes do not fully transform into purchase behaviour.

Even though insect products increasingly receive attention as a sustainable food alternative to meat, consumer acceptance remains low. The purpose of this paper is to test consumer acceptance of two different insect species with varying degrees of processing which led to different degrees of insects’ visibility.

Insect dishes that varied according to species and degree of visibility were presented to participants of a self-administered personal survey within a meal context. Consumer acceptance was measured through the willingness-to-try the different dishes, and a hierarchical linear regression was applied to estimate the role of insect species.

Consumer acceptance can be improved by focusing on different forms of food processing and different insect species. The lower the visibility of insects, the higher the consumer acceptance, independent of insect species. However, this is not sufficient to overcome consumers’ widely held rejection. Main barriers for consumer acceptance seem to be low social and cultural acceptance, fear of trying unknown products and a lack of taste experience.

A huge body of literature has examined determinants of insect consumption, but the majority of these studies did not consider the effects of insect species. The study’s main objective is to close this research gap while checking the most relevant individual traits as identified through a literature review: food neophobia and familiarity, social and cultural norms, awareness of benefits of insect production, meat consumption and socio-demographics.

Past work on the role of brands in the acceptance of organic products is partial and inconclusive. Research has failed to examine the consumer sense-making process underpinning fit assessment, despite the centrality of this assessment in the acceptance of line extensions. This study reconceptualizes the fit construct, showing the relationship of the fit dimensions (noncompensatory) and contributes to the literature with a deeper understanding of the role of a brand's association in the assessment process, which has been poorly examined in the past.

Grounded theory was used to unearth the process followed by consumers to assess the fit of organic line extensions. The study was based on 14 in-depth interviews.

The findings show that the dimensions of fit that consumers consider in assessing organic line extensions depend on the schema used in the assessment process. Moreover, it demonstrates that these dimensions have disparate structural relationships with one another, depending on consumers' previous commitment to organic products. Finally, the paper identifies three possible behavioral reactions by consumers toward organic line extensions.

The main limitation of this research concerns the settings in which it was developed. Therefore, and as stated by Strauss and Corbin (1990) the model applies to the situation analyzed and not to others. Future research could study if there are cultural differences in the assessment process of an organic line extension. Moreover, the contribution presented in this paper needs further empirical testing; specifically, the configuration of dimensions needed to accept an organic line extension and the relationship among dimensions.

This paper contributes to the literature by studying the impact of brand association on assessing an organic line extension and reconceptualizing the fit construct by showing the dimensions and the relationship between them that are not additive to the overall fit, as shown in past literature. Additionally, it provides a guide to brands wishing to launch an organic product using a line extension strategy and the potential implications for the parent brand that should be considered.