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Celebrity endorsement on microblogging platforms (such as Twitter or Weibo) has become a widely adopted marketing practice. Compared to its counterpart on traditional mass media, celebrity endorsement on microblogging platforms has some unique characteristics. For example, the endorsement information is usually more implicit and the endorsers tend to use different tactics so as to maximize the impact on their followers. However, these new practices have not been thoroughly investigated and the underlying mechanism by which the endorsers influence potential information receivers is not well understood. Anchored on the theory of parasocial interaction borrowed from the mass communication literature, this paper aims to reveal the underlying mechanism of celebrity endorsement on microblogging platforms. More specifically, it examines the relationship between the intensity of microbloggers’ various celebrity-following activities and endorsement effectiveness.

The authors designed and conducted a Web-based survey containing scales for all focal constructs and demographic and control variables. Through online and offline campus advertisement, undergraduate and graduates students who have used microblogging for at least three months were recruited.

First of all, the survey results show that the intensity of users’ celebrity-following activities on microblogging platforms has a positive effect on the effectiveness of celebrity endorsement. Second, the positive effect of the intensity of microbloggers’ celebrity-following activities on the effectiveness of celebrity endorsement is mediated by the perceived parasocial interaction with the endorsers.

Firstly, most respondents of the survey are university students. Second, because of the intrinsic disadvantage of the survey method, the causal relationship between constructs cannot be examined directly. Last, parasocial interaction/relationship is a complex theoretical construct whose influence is unveiled partially in this research.

First, this study found that the effectiveness of celebrity endorsement on microblogging platforms are largely affected by celebrity-followers’ online involvement. Second, this study revealed that celebrity-following activities that help enhance followers’ perceptions of parasocial interactions are particularly beneficial for endorsement effectiveness. Last, the exploratory analysis further revealed that followers’ perceptions of ingenuousness and companionship are two key sub-dimensions of parasocial interaction.

First, the authors verified the positive relationship between information receiver’s involvement and the effectiveness of celebrity endorsement in the context of microblogging platforms. Second, this study found that parasocial interaction fully mediates the relationship between celebrity-following intensity and endorsement effectiveness. Last, through an exploratory factor analysis, the authors further decomposed the construct of parasocial interaction into three sub-dimensions, namely, ingenuousness, empathy and companionship.

This study aims to examine how young consumers perceive the advertising effectiveness of endorsements by virtual idols and how endorsements by virtual idols differ from endorsements by real human celebrities such as traditional celebrities and online influencers.

An experimental study was conducted with 400 randomly selected young respondents in China in December 2022. A 3 × 2 factorial design was used to test how the type of celebrity endorser and level of product involvement influence the persuasiveness of advertising aimed at young adults. Among 400 respondents, the average age was 21.5 years. A total of 193 male and 207 female respondents participated in the experiment.

Young consumers find virtual idols, online influencers and traditional celebrities attractive. Although virtual idols are the least credible among the three types of celebrity endorsers, young consumers tend to be more convinced by their endorsements of products with low levels of consumer involvement than those with high levels of involvement. Among the three types of celebrity endorsements, young consumers find traditional celebrities the most effective. In addition, young consumers’ attitudes toward celebrity endorsers mediate the impact of celebrity endorsers’ attractiveness and credibility on their attitudes toward the advertisements. The perceived level of product involvement moderates the transfer of meaning from the attitude toward the celebrity endorsers to the attitude toward the advertisement.

First, when choosing celebrity endorsers to advertise products targeting young consumers, marketing communication practitioners should give priority to the endorsers’ perceived credibility, as young consumers have a variety of views about them that can significantly affect their attitudes toward the advertisement. Second, real human celebrity endorsers are more effective than virtual idols in celebrity endorsements. However, virtual idols may be suited for use in advertisements to promote products with low involvement levels, such as soft drinks.

To the best of the authors’ knowledge, this is the first experimental study to attempt to analyze the effectiveness of virtual idols in advertising aimed at young consumers. This is also the first comparative study to introduce virtual idols as celebrity endorsers in product advertising and to compare their effectiveness with that of the two other types of commonly discussed celebrity endorsers, traditional celebrities and online influencers.

Celebrity endorsement is a phenomenon widely used by companies and studied by researchers. Despite the generally positive aspects of endorsement on the evaluation of products, in some cases, celebrities cannot substantially help promote products. The purpose of this paper is to analyze the effectiveness of celebrity endorsement effect in an aspiring new celebrity.

Four studies involving 664 respondents were conducted to analyze the effectiveness of the endorsement. In addition to verifying the existence of the effect (Study 1), studies were conducted focusing on contextual variables with the potential to modify effect. Study 2 analyzes the brand and charisma effects, Study 3 analyzes the congruence between celebrities and Study 4 analyzes the exposure level of the endorser celebrity.

The results demonstrate the effectiveness of this celebrity endorsement, as well as the effect of different contexts on endorsement, demonstrating that although new celebrities are less affected by acclaimed celebrities, as they become better known, to use the endorsement of celebrities with charisma and who relating in some way to the aspiring celebrity, can be an effective strategy, especially for the beginners in the career.

This research contributes to the knowledge of celebrity endorsement to fill the lack pointed out in previous studies in the field over the effectiveness of this effect and, above all, the moderator variables that can influence or even annul this effect. In addition, by developing its own image and reputation, the aspiring new celebrity receives less influence from the endorser.

The primary question motivating this study is how message characteristics influence the persuasiveness of celebrity athlete endorsements as used in print advertising for a sports drink. In particular, this study examines the extent to which celebrity endorsement of a product influences the effectiveness of advertising under varying degrees of perceived fit between the celebrity and the product image. The findings indicate that the process of integrating endorsement strength with given endorsers and products can substantially enhance the effectiveness of celebrity advertising. It is found that the interactive effect of endorsement strength and celebrity-product match is more pronounced among consumers with high product involvement than among those with low involvement.

Endorsement research has focused primarily on determining the effectiveness of single endorsers, whereas marketing practice shows that companies usually engage multiple endorsers to promote their brands and products. As academic evidence for multiple endorsers is limited and extant findings are ambiguous, the purpose of this study is to determine the influence of different multiple endorser combinations on consumers' purchase intentions for a sports-related product endorsement and to identify whether endorser-product congruence and consumers' involvement with the endorsed product moderate endorsers' influences.

Two-hundred thirty-three useful responses were collected to an online experiment, and endorsers' direct and indirect influences on consumers' purchase intentions were analyzed in serial mediation analyses. Potential moderating effects of endorser-product congruence and consumers' involvement with the endorsed product were tested in moderated regression analyses.

The study's findings show that using multiple endorsers has an overall positive influence on consumers' purchase intentions, which is mediated by their attitudes toward the advertisements and the endorsed brand. Endorser-product congruence moderates an endorsement's effectiveness, whereas a moderating effect of consumers' product involvement was not supported.

This study adds to the extant body of endorsement research by confirming the overall effectiveness of using multiple endorsers to influence consumers' intentions to purchase the endorsed product. In addition, by showing that endorser-product congruence determines endorsers' effectiveness in a multiple endorser context, the study extends the current research perspective and provides practical implications for marketing professionals on how to combine multiple endorsers.

The purpose of this study is to examine the impact of multiple brand celebrity endorsement strategies on firms’ performance and different attributes associated with celebrities on firms’ performance. In this regard, the present study specifically explores the role of celebrity reputation and experience, as well as social media as a promotion platform in influencing the economic effectiveness of multiple brand endorsement strategies, i.e. proportion of brands endorsed in a firms’ brand portfolio.

Study is based on instrumental variable regression analysis approach and is conducted in one of the emerging markets, i.e. India.

The findings indicate that firms’ market valuations increase as its proportion of brands endorsed by celebrities increases. Furthermore, popularity reputation of celebrity also influences market valuation, and relationship is positively moderated by celebrity’s experience.

Extant studies have considered one endorsement news of a firm at a time. However, how total proportion of firms’ brand endorsed by celebrities impacts its performance has not been investigated. Furthermore, impact of celebrity traits has been examined only in consumer behavior studies and has been rarely investigated in context of firms’ economic performance.

Endorsement marketing has been widely used to generate consumer attention, interest and purchase decisions among targeted audiences. Internet celebrities who become famous on the Internet are dependent on strategic intimacy to appeal to their followers. Our study aims to examine how multiple exposures to Internet celebrity endorsements influence consumers’ click and purchase decisions in the context of influencer marketing.

Based on a unique and representative dataset, the authors first model consumers’ choices for clicks and purchases with two panel fixed-effect logit models linking clicks and purchases with the frequency of exposure to Internet celebrity endorsement. To further control the endogeneity produced by the intercorrelation between the click and purchase models, the authors also adopt the two-stage Heckman probit structure to jointly estimate the two models using Maximum Likelihood Estimation. Robustness checks confirm the effectiveness of the models.

The results suggest that Internet celebrity endorsement plays a significant role in bringing referral traffic to e-commerce sites but is less helpful in affecting conversion to sales. The impact of repetitive Internet celebrity endorsements on consumers’ click decisions is U-shaped, but the role of Internet celebrities as online retailers will “shape-flip” this relationship to a negative linear relation.

Our study is the first to investigate the repetitive exposure effect of Internet celebrity endorsement. The results show a contradictory pattern with a wear-out effect of repetition in the advertising literature. This is the first study to show how the endorsing self, which is a common business model in influencer marketing, moderates the effectiveness of influencer marketing.

This study aims to investigate the rising trend of virtual influencers – digitally created characters with human-like attributes. It aims to evaluate and compare their effectiveness with human influencers in terms of brand attitudes and purchase intentions. It uncovers the mechanisms underlying the differences in effectiveness observed between virtual influencers and their human counterparts.

The research uses a 2 (influencer type: human vs virtual) × 3 (product type: functional vs symbolic vs experiential) between-subjects design. Through a pilot study (n = 334) and a main study (n = 352), the research examines the interactive effects of influencer and product type on brand attitude and purchase intentions. Hypotheses were developed and tested using moderating mediation models centered on authenticity and product–endorser fit.

Virtual influencers are perceived as less authentic than human influencers across all product types, negatively influencing brand attitude and purchase intention. However, the extent to which influencer type affects brand attitudes and purchase intentions, mediated by product–endorser fit, varies based on the product type.

This research emphasizes two key mechanisms – authenticity and product–endorser fit – influencing the effectiveness of virtual influencers. It suggests that aligning virtual influencers with suitable product types can offset their perceived authenticity deficit, significantly affecting their endorsement effectiveness.

The purpose of this study was to test whether endorsements that show a low strength of association (bottom-up bias) benefit from increased attention and processing efforts. The current study also tested whether consumer involvement level (top-down bias) dynamically interacts with the bottom-up attention phenomena.

Through a series of pretests, 36 potential celebrity-product matches were identified using real athletes and product brands. Two experiments were conducted: 330 individual responses (110 participants × three conditions) were obtained in a within-subjects lab experiment, and 868 participants were recruited for a between-subjects online experiment. Linear mixed modeling and moderated mediation analysis were performed.

The relationships between the strength of image associations and attention time to endorsements and recall and choice consideration of endorsed brands were U-shaped and curvilinear. Attention largely mediated the relationship between the strength of association and recall/choice. Involvement effects were diluted by the strength of association effects, rejecting top-down attentional control.

Brand managers for both products and celebrities are recommended to search for corresponding not only image-matched partners but also endorsement partners with dissonant pre-existing images.

The majority of the existing endorsement literature has conventionally suggested that congruence between the endorser and the endorsed property, rather than incongruence, induces consumers’ positive endorsement evaluation. This study constructs important theoretical advancements to the existing literature by empirically proving that through an attentional process, an endorsement contract, conventionally perceived as mismatched, can also generate positive outcomes.

The purpose of this study is to evaluate the economic value of celebrity endorsements to Indian firms based on their branding strategy – corporate or house-of-brands – and their “congruence” or “fit” with the celebrity. The overall economic value of endorsements to firms in India, a moderately collectivist culture, is also assessed.

Standard “event study” methodology is used to evaluate the economic value of endorsements under different branding strategies (47 endorsement announcements – 25 corporate brands and 22 house-of-brands). The impact of the level of congruence (assessed using brand personality scales) on abnormal returns is also examined.

Event study results indicate significant positive abnormal returns for corporate brands and insignificant returns to house-of-brands. Moreover, the level of congruence is found to have an insignificant effect on endorsement announcement returns. Overall, celebrity endorsements result in positive economic value to Indian firms.

This study evaluates the differences in the effectiveness of celebrity endorsements (which might form a significant part of advertising costs) to firms following different branding strategies. Findings from this study indicate that celebrity endorsement announcements from house-of-brands do not lead to any significant stock market returns (in terms of market value). Further, contrary to current literature, the results indicate that the congruence between brand and celebrity has no impact on returns to endorsements in India, warranting further examination of whether congruence or likeability is important in endorsements.