This research introduces the concept of “brand addiction” as a new marketing construct. Employing conceptual development, the concept of brand addiction is defined as a psychological state that entails an obsessive relationship between the consumer and a specific brand. To examine the phenomenon of brand addiction, the present research was designed based on a partial sequential mixed methods research in which a qualitative study was followed by a quantitative study. Arguing that research on brand addiction should be built based on an understanding of how consumers experience this phenomenon in reality, the research incorporated a series of four qualitative focus group studies to uncover the possible core features, motives, and consequences of the brand addiction prototype using discursive psychological perspective. Survey data were subsequently used to generate the brand addiction measurement scale and to test the brand addiction theoretical model. Using exploratory and confirmatory factor analyses, the brand addiction measurement scale employed 14 core elements. In addition to the brand addiction core features, the brand addiction prototype comprises brand trust, ideal, and actual self-image congruence and fashion interest as its antecedents. Furthermore, the brand addiction prototype includes the feeling of guilt, appearance esteem, debt attitude, and life happiness as its consequences. This research concludes with a presentation and discussion of the theoretical and managerial implications. The research findings provide an understanding of and deep insights into the brand addiction phenomenon, thereby adding to the existing body of literature.

Consumers watch what a brand does, listen to what a brand says, and expect to make a meaningful connection with a brand via social media. Thus, creating effective and persuasive content on behalf of a brand to attract consumers becomes an important task for today’s marketers in social media. In this dissertation, brand information disclosure is defined as any communication of a brand’s relevant information, thoughts, and feelings, which are generated and deliberately disclosed by marketers. Further, disclosing perceived backstage of a brand by showing various behind-the-scenes information is proposed as a unique type of brand information disclosure, which is interpreted as a higher degree of brand information disclosure. Motivated by the integral role of self-disclosure in interpersonal relationships, the purpose of this dissertation study is to investigate the influence of a brand’s disclosure of perceived backstage information through social media. Specifically, this study explored how the degree and the scarcity of information disclosure would influence on consumer’s intimacy, liking, and trust toward a brand as well as consumer-brand relationship quality. Further, the study attempts to investigate the moderating role of consumer’s advertising skepticism on consumer responses. The findings from this dissertation study illustrate that degree of brand information disclosure is a significant influence on consumers’ brand evaluations and consumer-brand relationship quality in a social media environment. In addition, findings highlighted the influential role of the scarcity of information disclosure, depending upon the degree of information disclosure. Moreover, the findings evidenced how the consumer’s general advertising skepticism can play a significant role when consumers are exposed to information from the brand via social media. / text

Within the marketing management sphere, consumer-brand relationship theory has attracted interest and academic research since its inception. One area that has been relatively unexplored, however, is the interplay between vernacular languages and consumer-brand relationships in a multilingual South Africa. Celebrated for its multicultural and multilingual identity, South Africa recognises eleven official languages with English predominantly used across marketing activities. Despite a variety of research projects aimed at exploring consumer-brand relationship theory, there remains a gap in the knowledge regarding how languages impact the relationships that consumers form with brands. Previous research has been centred on the Western and Asian markets and has failed to address the challenges of the diverse South African market. Consumers experience an emotional link and a sense of attachment to their home language. This paper postulates that this connection extends to consumer-brand relationships and that language choice can, therefore, impact the formation and development of brand relationships. This paper sought to explore this theory, using qualitative research methods. In-depth interviews were conducted in order to collect information about consumers' experiences and feelings regarding this topic. Fourteen participants from various language groups were asked a series of open-ended questions and their responses recorded. Results demonstrated that the use of first languages can influence how consumers respond to brands and can affect a number of elements identified in the brand-relationship quality model. The analysis found a link between language use and brand relationship theory, finding that the use of consumers' mother tongues can lead to consumers developing relationship qualities including love and passion, self-connection and commitment. This demonstrates that language can play a significant role in impacting consumer-brand relationships. We, therefore, infer that language can potentially impact consumer-brand relationships, and that language choice has the power to impact how consumers build relationships with brands.

While past research has revealed diverse forms of relationships between consumers and brands similar to those of interpersonal relationships, this research focuses on the perspective of the brand role in its relationship with consumer in an advertising context. Therefore, the present research examines the interactive effect of brand role (partner vs. servant) and regulatory focus message (promotion vs. prevention) on advertising effectiveness. The results show that interaction between brand role and regulatory focus message significantly influences advertising persuasiveness and consumers' attitudes toward the advertisement, but not consumer's advertising believability, attitudes toward the brand and purchase intention. To be specific, individuals are more persuaded and show more positive attitudes toward advertising when a partner brand is advertised with a promotion-focused message. In contrast, when a servant brand is advertised with a prevention-focused message, individuals are more persuaded and show more positive attitudes toward advertising. / text

With the continuing growth of consumer participation in brand activities in social media, social media marketers and researchers have sought to tap into consumer engagement and relationship building by creating interpersonal social media environments that can facilitate consumers’ sense of belonging or social relatedness. Although consumer engagement and relationship building have become mainstream research topics in social media, little is known about which marketing efforts brands should undertake in order to engage various consumers who have different motivations to engage with brands. The purpose of this research was to explore the mechanism by which consumer motivations and perceptions of social relatedness influence consumer engagement and relationship building in the context of social media. Three studies were conducted to examine whether the extent to which consumers’ experience of social relatedness in social media moderates the effects of self-determination on consumer engagement (i.e., intrinsic motivation and future intention) and relational outcomes (i.e., satisfaction, affective commitment, control mutuality, competence trust, and benevolence/integrity trust). The findings consistently showed that consumers’ perceptions of the social relatedness they experienced within social media moderated the effect of self-determination on intrinsic motivation and affective commitment. Specifically, the positive influence of social relatedness on consumers’ intrinsic motivation and affective commitment to brand activities was greater for consumers with a low level of self-determination than for those who were motivated by a high level of self-determination. Consumers with low levels of self-determination yielded greater intrinsic motivation and affective commitment when they experienced high perceived social relatedness than when they perceived low perceived relatedness. However, among brand followers in social media, the consumer self-determination × social relatedness interaction effects on the relational outcomes were greater for those who were high in self-determination than for those who were low in self-determination. Overall, this research highlights the importance of fulfilling consumers’ need for social relatedness in the context of social media, especially for those who are motivated to engage in brand activities via external factors. Further, findings of this research yield insights into segmenting consumers based on the level of consumer self-determination and consumer type. / text

Increased consumer awareness together with the importance of sustainable consumption is currently a highly debated topic. Frequently, the media reports scandals from strong international brands, revealing information regarding deficiencies linked to the brands social sustainability efforts. As a consequence, some consumers are starting to put higher demands on social sustainability by spreading condemnations. This is to prevent injustices such as child labour and modern slavery. The condemnation can be in the form of negative word-of- mouth or by boycotting the brand. This is something that can affect the brand strongly by damaging the consumers perception of the brand, which can be fatal to the consumer-brand relationship. However, this is something that seems to affect some brands to a greater extent than other brands This study explores the strength of Keller’s brand resonance level as a possible explanation to the above mentioned anomality. It shows that brands resonance operates as a countermeasure against negative information in relation to the brands indiscretions regarding social sustainability. Brand resonance can contradict the consumers ethical values and self-imagery, leaving the consumers perception of the brand unscathed. The results showed that brand resonance can become so strong that it can make the consumer abandon their ethical values, even for consumers whom consider themselves as highly ethical. This study has been conducted by a hypothetically deductive methodology. To determine the significance of the result it has been verified with a Z-test that applied a 5% significance level.

Introduire la marque, dans le cadre des relations de la franchise peut se révéler efficace si les pratiques du franchiseur pour influencer les décisions des franchisés se révèlent inefficaces. Cette recherche explore et examine la qualité de la relation franchisé-marque comme un médiateur de la relation entre les bénéfices de la marque perçus par le franchisé et leurs comportements de citoyenneté de marque. Une phase qualitative a été conduite, suivie par une analyse quantitative où un modèle conceptuel a été testé par des équations structurelles (PLS-SEM). L’enquête par questionnaire a été réalisée en France et en Indonésie. L’analyse montre que les bénéfices de la marque influencent significativement la qualité de relation franchisé-marque. La qualité de la relation franchise-marque est ainsi le principal mécanisme de médiation dans la relation entre les bénéfices de la marque et les comportements de citoyenneté de marque des franchisés. Cette recherche étend le paradigme de la relation de franchise en associant le rôle du franchisé et de la marque dans le cadre relationnel au-delà de la dyade traditionnelle franchisés/franchiseur. Les résultats montrent que les franchisés deviennent des supporteurs actifs de la marque au travers des actions franchiseur/franchisés lorsqu'ils sont liés de manière émotionnelle aux marques. Nous sommes conscients que la petite taille de notre échantillon est insuffisante pour tester notre modèle conceptuel complexe. Les recherches futures peuvent bénéficier en examinant le rôle de la relation franchisé-marque comme atténuateur des transgressions de la marque du franchiseur sur les intentions de renouveler le contrat de franchisé. / Introducing the brand in the context of franchise relationships prove effective since franchisor's practices to influence the decisions of franchisees are no longer as effective. This research aims to explore and examine the quality of franchisee-brand relationship as a mediator of the relationship between franchisee-perceived brand benefits and franchisee brand citizenship behaviours. A qualitative phase was conducted, followed by a quantitative analysis where a conceptual model was tested by structural equations (PLS-SEM). The survey was carried out in France and in Indonesia. The analysis shows that franchisee-perceived brand benefits significantly influence the quality of franchisee-brand relationships. The latter also acts as the key mediating mechanism in the relationship between franchisee-perceived brand benefits and franchisee brand citizenship behaviours. This research extends the franchise relationship paradigm by combining the role of the franchisee and the brand within the relational framework beyond the traditional franchisee-franchisor dyad. The results suggest that franchisees become active supporters of the brand through franchisor-franchisee actions when they are emotionally bonded with the brands. We are aware of the sample size relative insufficiency to fit our complex conceptual model with the data. Future research can benefit by examining the role of franchisee-brand relationship in altering the effect of franchisor brand transgressions on franchisee stay intention.

Esta tese explora um aspecto social específico da interação entre consumidores e marcas em mídias sociais, que é o nível de intimidade da marca. Este fator é entendido como o grau em que a marca interage como um ator social psicologicamente próximo aos seus consumidores, sendo operacionalizado na forma de um construto latente formado pela autorrevelação, pela expressividade de emoções, pela transmissão de sentimentos positivos e de calor humano e pela informalidade. Embora as mídias sociais já tenham se tornado um componente importante para as estratégias de relacionamento das empresas com seus clientes, ainda há uma falta de construtos específicos de relacionamento social na maior parte dos modelos tradicionalmente empregados em branding e comércio eletrônico. Assim, o objetivo geral desta tese foi o de entender como este nível de intimidade da marca influencia o comportamento dos consumidores nas mídias sociais e quando pode ser mais vantajoso para as marcas buscarem maior ou menor intimidade, dependendo do contexto de consumo em que atuam. Mais especificamente, o efeito da intimidade da marca foi analisado em duas variações de contextos de consumo: no caso de serviços de objetivo hedônico ou utilitário; e no caso de serviços de alto ou baixo envolvimento situacional. Quatro estudos experimentais foram usados, apresentando reproduções de páginas de marca no Facebook para participantes selecionados através do Amazon MTurk. Através do Estudo 1, foram oferecidas evidências de suporte ao efeito positivo da intimidade da marca nas respostas dos consumidores – intenção de compra, intenção de uso da página de marca, aceitação e fornecimento de boca a boca online – em função do aumento do valor hedônico da experiência dos consumidores na mídia social. Os resultados do Estudo 1 também ofereceram suporte à hipótese de moderação deste efeito positivo da intimidade da marca pelo tipo de consumo buscado pelos consumidores. A intimidade da marca teve um efeito maior quando os consumidores buscavam um objetivo hedônico do que um objetivo utilitário. O Estudo 2 foi projetado para testar o efeito moderador da valência geral das postagens sobre a marca na mídia social. Os resultados deste estudo demonstraram que, com o maior número de opiniões negativas sobre a marca na mídia social, o efeito positivo da intimidade da marca deixa de se manifestar em todas as variáveis dependentes. O Estudo 3 analisou a possibilidade de que a intimidade da marca pudesse tornar as respostas dos consumidores menos favoráveis à marca, no caso do aumento do risco percebido. Confirmando esta hipótese, o risco percebido foi verificado como um mediador do efeito negativo da intimidade da marca e o nível de envolvimento situacional como um moderador desta relação. Por fim, o Estudo 4 foi projetado para verificar a possibilidade de influência da valência geral das postagens sobre a marca no efeito da intimidade da marca nas variáveis dependentes. Porém, os resultados deste estudo não indicaram nenhuma interação entre a intimidade da marca e a valência geral das postagens, mas apenas um efeito direto da valência geral das postagens na intenção de compra e de boca a boca. De uma forma geral, os resultados desta tese podem contribuir não apenas para a literatura sobre marketing e comércio eletrônico, mas também podem ser úteis para informar os gerentes de marketing sobre como e quando eles deveriam abordar seus clientes de uma forma mais (ou menos) próxima. Em especial, os resultados indicam ser possível obter melhores respostas em termos de intenção de compra, uso da página de marca e boca a boca online, aumentando o nível de intimidade de marca se esta está mais relacionada a produtos/serviços mais hedônicos e de baixo envolvimento situacional, mas diminuindo o nível de intimidade se o produto/serviço está associado a um alto risco e a um elevado envolvimento situacional. / This thesis explores a specific aspect of social interaction between consumers and brands on social media, which is the level of brand intimacy. This factor is defined as the degree to which the brand interacts as a psychologically close social actor to its consumers, and it is operated as a latent construct composed of self-disclosure, emotion expressivity, transmission of positive feelings, human warmth and informality. Although social media have already become an important component in the relationship strategies of companies with their customers, there is still a lack of specific constructs of social relationship in most models traditionally used in online branding and ecommerce. Thus, the general purpose of this thesis was to understand how this level of brand intimacy influences consumer behavior on social media and when it may be more advantageous for brands to seek greater or lesser intimacy, depending on the consumption context in which they operate. More specifically, the effect of brand intimacy was examined under two variations of consumption contexts: in the case of hedonic or utilitarian services; and in the case of services of high or low situational involvement. Four experimental studies were applied to participants selected through Amazon MTurk, with reproductions of Facebook brand pages. The first study provided evidence supporting the positive effect of brand intimacy in consumer responses (purchase intention, intention to use brand page, acceptance and delivery of e-WOM) – due to the increased hedonic value the experience of consumers on social media. The results of Study 1 also offered support to the hypothesis that this positive effect of intimacy brand is moderated by the consumers’ goal type. Brand intimacy had a greater effect when consumers had a hedonic goal than when they had a utilitarian goal. Study 2 was designed to test the moderating effect of the overall valence of posts about the brand on social media. The results confirmed this effect and showed that the positive effect of brand intimacy in all dependent variables ceased to exist due to the number of negative opinions on the brand page. The third study analyzed the possibility that the level of brand intimacy could make consumers’ responses less favorable to the brand in the case of increased perceived risk. Confirming this hypothesis, the perceived risk was observed as a mediator of this negative effect of brand intimacy. Additionally, the study verified that the level of situational involvement was a moderator of this relationship. Finally, the fourth study was designed to test the possibility that the overall valence of the posts about the brand could moderate the effect of brand intimacy on the dependent variables. However, the results of this study indicated no interaction between brand intimacy and the overall valence of the posts, but only a direct effect of the overall valence of posts on purchase intention and e-WOM. In a general way, the results of this thesis can contribute not only to the literature on online marketing and e-commerce, but may also be useful to inform marketing managers on how and when they should address their customers in a more (or less) close way. in order to get better responses in terms of purchase intention, brand page usage and e-WOM. In particular, the results indicate possible best responses in terms of purchase intention, brand page usage intention and e-WOM, by increasing the level of brand intimacy if it is more related to hedonic products/services with low level of situational involvement and risk, or decreasing the level of intimacy for products/services with high levels of situational involvement and risk.

Esta tese explora um aspecto social específico da interação entre consumidores e marcas em mídias sociais, que é o nível de intimidade da marca. Este fator é entendido como o grau em que a marca interage como um ator social psicologicamente próximo aos seus consumidores, sendo operacionalizado na forma de um construto latente formado pela autorrevelação, pela expressividade de emoções, pela transmissão de sentimentos positivos e de calor humano e pela informalidade. Embora as mídias sociais já tenham se tornado um componente importante para as estratégias de relacionamento das empresas com seus clientes, ainda há uma falta de construtos específicos de relacionamento social na maior parte dos modelos tradicionalmente empregados em branding e comércio eletrônico. Assim, o objetivo geral desta tese foi o de entender como este nível de intimidade da marca influencia o comportamento dos consumidores nas mídias sociais e quando pode ser mais vantajoso para as marcas buscarem maior ou menor intimidade, dependendo do contexto de consumo em que atuam. Mais especificamente, o efeito da intimidade da marca foi analisado em duas variações de contextos de consumo: no caso de serviços de objetivo hedônico ou utilitário; e no caso de serviços de alto ou baixo envolvimento situacional. Quatro estudos experimentais foram usados, apresentando reproduções de páginas de marca no Facebook para participantes selecionados através do Amazon MTurk. Através do Estudo 1, foram oferecidas evidências de suporte ao efeito positivo da intimidade da marca nas respostas dos consumidores – intenção de compra, intenção de uso da página de marca, aceitação e fornecimento de boca a boca online – em função do aumento do valor hedônico da experiência dos consumidores na mídia social. Os resultados do Estudo 1 também ofereceram suporte à hipótese de moderação deste efeito positivo da intimidade da marca pelo tipo de consumo buscado pelos consumidores. A intimidade da marca teve um efeito maior quando os consumidores buscavam um objetivo hedônico do que um objetivo utilitário. O Estudo 2 foi projetado para testar o efeito moderador da valência geral das postagens sobre a marca na mídia social. Os resultados deste estudo demonstraram que, com o maior número de opiniões negativas sobre a marca na mídia social, o efeito positivo da intimidade da marca deixa de se manifestar em todas as variáveis dependentes. O Estudo 3 analisou a possibilidade de que a intimidade da marca pudesse tornar as respostas dos consumidores menos favoráveis à marca, no caso do aumento do risco percebido. Confirmando esta hipótese, o risco percebido foi verificado como um mediador do efeito negativo da intimidade da marca e o nível de envolvimento situacional como um moderador desta relação. Por fim, o Estudo 4 foi projetado para verificar a possibilidade de influência da valência geral das postagens sobre a marca no efeito da intimidade da marca nas variáveis dependentes. Porém, os resultados deste estudo não indicaram nenhuma interação entre a intimidade da marca e a valência geral das postagens, mas apenas um efeito direto da valência geral das postagens na intenção de compra e de boca a boca. De uma forma geral, os resultados desta tese podem contribuir não apenas para a literatura sobre marketing e comércio eletrônico, mas também podem ser úteis para informar os gerentes de marketing sobre como e quando eles deveriam abordar seus clientes de uma forma mais (ou menos) próxima. Em especial, os resultados indicam ser possível obter melhores respostas em termos de intenção de compra, uso da página de marca e boca a boca online, aumentando o nível de intimidade de marca se esta está mais relacionada a produtos/serviços mais hedônicos e de baixo envolvimento situacional, mas diminuindo o nível de intimidade se o produto/serviço está associado a um alto risco e a um elevado envolvimento situacional. / This thesis explores a specific aspect of social interaction between consumers and brands on social media, which is the level of brand intimacy. This factor is defined as the degree to which the brand interacts as a psychologically close social actor to its consumers, and it is operated as a latent construct composed of self-disclosure, emotion expressivity, transmission of positive feelings, human warmth and informality. Although social media have already become an important component in the relationship strategies of companies with their customers, there is still a lack of specific constructs of social relationship in most models traditionally used in online branding and ecommerce. Thus, the general purpose of this thesis was to understand how this level of brand intimacy influences consumer behavior on social media and when it may be more advantageous for brands to seek greater or lesser intimacy, depending on the consumption context in which they operate. More specifically, the effect of brand intimacy was examined under two variations of consumption contexts: in the case of hedonic or utilitarian services; and in the case of services of high or low situational involvement. Four experimental studies were applied to participants selected through Amazon MTurk, with reproductions of Facebook brand pages. The first study provided evidence supporting the positive effect of brand intimacy in consumer responses (purchase intention, intention to use brand page, acceptance and delivery of e-WOM) – due to the increased hedonic value the experience of consumers on social media. The results of Study 1 also offered support to the hypothesis that this positive effect of intimacy brand is moderated by the consumers’ goal type. Brand intimacy had a greater effect when consumers had a hedonic goal than when they had a utilitarian goal. Study 2 was designed to test the moderating effect of the overall valence of posts about the brand on social media. The results confirmed this effect and showed that the positive effect of brand intimacy in all dependent variables ceased to exist due to the number of negative opinions on the brand page. The third study analyzed the possibility that the level of brand intimacy could make consumers’ responses less favorable to the brand in the case of increased perceived risk. Confirming this hypothesis, the perceived risk was observed as a mediator of this negative effect of brand intimacy. Additionally, the study verified that the level of situational involvement was a moderator of this relationship. Finally, the fourth study was designed to test the possibility that the overall valence of the posts about the brand could moderate the effect of brand intimacy on the dependent variables. However, the results of this study indicated no interaction between brand intimacy and the overall valence of the posts, but only a direct effect of the overall valence of posts on purchase intention and e-WOM. In a general way, the results of this thesis can contribute not only to the literature on online marketing and e-commerce, but may also be useful to inform marketing managers on how and when they should address their customers in a more (or less) close way. in order to get better responses in terms of purchase intention, brand page usage and e-WOM. In particular, the results indicate possible best responses in terms of purchase intention, brand page usage intention and e-WOM, by increasing the level of brand intimacy if it is more related to hedonic products/services with low level of situational involvement and risk, or decreasing the level of intimacy for products/services with high levels of situational involvement and risk.

Esta tese explora um aspecto social específico da interação entre consumidores e marcas em mídias sociais, que é o nível de intimidade da marca. Este fator é entendido como o grau em que a marca interage como um ator social psicologicamente próximo aos seus consumidores, sendo operacionalizado na forma de um construto latente formado pela autorrevelação, pela expressividade de emoções, pela transmissão de sentimentos positivos e de calor humano e pela informalidade. Embora as mídias sociais já tenham se tornado um componente importante para as estratégias de relacionamento das empresas com seus clientes, ainda há uma falta de construtos específicos de relacionamento social na maior parte dos modelos tradicionalmente empregados em branding e comércio eletrônico. Assim, o objetivo geral desta tese foi o de entender como este nível de intimidade da marca influencia o comportamento dos consumidores nas mídias sociais e quando pode ser mais vantajoso para as marcas buscarem maior ou menor intimidade, dependendo do contexto de consumo em que atuam. Mais especificamente, o efeito da intimidade da marca foi analisado em duas variações de contextos de consumo: no caso de serviços de objetivo hedônico ou utilitário; e no caso de serviços de alto ou baixo envolvimento situacional. Quatro estudos experimentais foram usados, apresentando reproduções de páginas de marca no Facebook para participantes selecionados através do Amazon MTurk. Através do Estudo 1, foram oferecidas evidências de suporte ao efeito positivo da intimidade da marca nas respostas dos consumidores – intenção de compra, intenção de uso da página de marca, aceitação e fornecimento de boca a boca online – em função do aumento do valor hedônico da experiência dos consumidores na mídia social. Os resultados do Estudo 1 também ofereceram suporte à hipótese de moderação deste efeito positivo da intimidade da marca pelo tipo de consumo buscado pelos consumidores. A intimidade da marca teve um efeito maior quando os consumidores buscavam um objetivo hedônico do que um objetivo utilitário. O Estudo 2 foi projetado para testar o efeito moderador da valência geral das postagens sobre a marca na mídia social. Os resultados deste estudo demonstraram que, com o maior número de opiniões negativas sobre a marca na mídia social, o efeito positivo da intimidade da marca deixa de se manifestar em todas as variáveis dependentes. O Estudo 3 analisou a possibilidade de que a intimidade da marca pudesse tornar as respostas dos consumidores menos favoráveis à marca, no caso do aumento do risco percebido. Confirmando esta hipótese, o risco percebido foi verificado como um mediador do efeito negativo da intimidade da marca e o nível de envolvimento situacional como um moderador desta relação. Por fim, o Estudo 4 foi projetado para verificar a possibilidade de influência da valência geral das postagens sobre a marca no efeito da intimidade da marca nas variáveis dependentes. Porém, os resultados deste estudo não indicaram nenhuma interação entre a intimidade da marca e a valência geral das postagens, mas apenas um efeito direto da valência geral das postagens na intenção de compra e de boca a boca. De uma forma geral, os resultados desta tese podem contribuir não apenas para a literatura sobre marketing e comércio eletrônico, mas também podem ser úteis para informar os gerentes de marketing sobre como e quando eles deveriam abordar seus clientes de uma forma mais (ou menos) próxima. Em especial, os resultados indicam ser possível obter melhores respostas em termos de intenção de compra, uso da página de marca e boca a boca online, aumentando o nível de intimidade de marca se esta está mais relacionada a produtos/serviços mais hedônicos e de baixo envolvimento situacional, mas diminuindo o nível de intimidade se o produto/serviço está associado a um alto risco e a um elevado envolvimento situacional. / This thesis explores a specific aspect of social interaction between consumers and brands on social media, which is the level of brand intimacy. This factor is defined as the degree to which the brand interacts as a psychologically close social actor to its consumers, and it is operated as a latent construct composed of self-disclosure, emotion expressivity, transmission of positive feelings, human warmth and informality. Although social media have already become an important component in the relationship strategies of companies with their customers, there is still a lack of specific constructs of social relationship in most models traditionally used in online branding and ecommerce. Thus, the general purpose of this thesis was to understand how this level of brand intimacy influences consumer behavior on social media and when it may be more advantageous for brands to seek greater or lesser intimacy, depending on the consumption context in which they operate. More specifically, the effect of brand intimacy was examined under two variations of consumption contexts: in the case of hedonic or utilitarian services; and in the case of services of high or low situational involvement. Four experimental studies were applied to participants selected through Amazon MTurk, with reproductions of Facebook brand pages. The first study provided evidence supporting the positive effect of brand intimacy in consumer responses (purchase intention, intention to use brand page, acceptance and delivery of e-WOM) – due to the increased hedonic value the experience of consumers on social media. The results of Study 1 also offered support to the hypothesis that this positive effect of intimacy brand is moderated by the consumers’ goal type. Brand intimacy had a greater effect when consumers had a hedonic goal than when they had a utilitarian goal. Study 2 was designed to test the moderating effect of the overall valence of posts about the brand on social media. The results confirmed this effect and showed that the positive effect of brand intimacy in all dependent variables ceased to exist due to the number of negative opinions on the brand page. The third study analyzed the possibility that the level of brand intimacy could make consumers’ responses less favorable to the brand in the case of increased perceived risk. Confirming this hypothesis, the perceived risk was observed as a mediator of this negative effect of brand intimacy. Additionally, the study verified that the level of situational involvement was a moderator of this relationship. Finally, the fourth study was designed to test the possibility that the overall valence of the posts about the brand could moderate the effect of brand intimacy on the dependent variables. However, the results of this study indicated no interaction between brand intimacy and the overall valence of the posts, but only a direct effect of the overall valence of posts on purchase intention and e-WOM. In a general way, the results of this thesis can contribute not only to the literature on online marketing and e-commerce, but may also be useful to inform marketing managers on how and when they should address their customers in a more (or less) close way. in order to get better responses in terms of purchase intention, brand page usage and e-WOM. In particular, the results indicate possible best responses in terms of purchase intention, brand page usage intention and e-WOM, by increasing the level of brand intimacy if it is more related to hedonic products/services with low level of situational involvement and risk, or decreasing the level of intimacy for products/services with high levels of situational involvement and risk.