This study examines consumer–celebrity attachment within multiple endorsement situations. A 2 × 2 factorial design manipulates attachment strength to the celebrity and endorsement situation while controlling for celebrity attractiveness, familiarity and match-up. Results show strong attachment to a celebrity encourages positive attitude towards the advertisement and brand regardless of the number of endorsements. A significant interaction effect is found for purchase intention, suggesting that both attachment and the number of endorsements influence likelihood of purchase. When consumers are more attached to a celebrity and view that celebrity endorsing multiple brands, this negatively impacts their purchase intention. Yet, when consumers have a weak attachment, their purchase intention is increased with multiple endorsements.

Celebrity brand authenticity is introduced as a construct that represents consumer perceptions of celebrities being "true to oneself" in their behaviors and interactions with consumers. A scale is developed through two purification stages and the scale's predictive validity is assessed. First, the meaning of celebrity brand authenticity to consumers is explored. Second, the Authenticity Inventory from the psychology literature is adapted to develop a scale for consumer perceptions of celebrity brand authenticity. Celebrity brands are perceived as true to self when they appear genuine in their relationships with consumers and behave in accordance with their perceived held values. Evidence of the convergent and discriminant validity of the celebrity brand authenticity scale is provided, which confirms celebrity brand authenticity as distinct from celebrity attachment, despite containing relational items. Finally, the predictive power of celebrity brand authenticity is confirmed through positively influencing consumer intentions to purchase an endorsed brand. Brand managers can use celebrity brand authenticity to position or develop celebrity brands, as well as in the selection of celebrity endorsers.

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Facial expressions act as a powerful readout device, influencing a viewer's own emotional response. Drawing from facial feedback theory, the mediating role of source expressive display‐based judgments on the influence of source facial expressions on consumer attitudes toward advertising stimuli, attitudes toward endorsed brands, and behavioral intention is examined. In addition, the examination of expressive display‐based judgments as an automatic phenomenon, contingent on the familiarity of the source and the perceived match with the product endorsed is investigated. Across three studies, the facial expression of a source (resting vs. smiling) is manipulated within endorsement contexts. Results demonstrate that when an endorser is pictured in an advertisement with a smiling facial expression, consumers report feeling more pleasant (pleasure), with this positive emotional response mediating the relationship between source expressive display and attitude toward an advertisement, attitude toward a brand, and purchase intention. Results also indicate that the emotional response derived from the presence of a smiling source in an advertisement occurs effortlessly, yet only for a familiar source and one that is perceived to match the product endorsed, indicating this process can be defined as automatic under certain conditions. The findings from these studies provide advertisers with an effective cue to enhance a consumer's emotional response to advertisements, which in turn heighten advertisement, brand, and behavioral based judgments.

This paper applies Gestalt psychology and associative network theory to examine the effect of eclipsing in celebrity endorsement on consumer attitude towards the endorsed brand. Eclipsing occurs when the celebrity overshadows the endorsed brand by dominating in an advertisement and diminishing the associative link between the celebrity and endorsed brand. Three studies take into account match‐up, celebrity attachment, brand familiarity, and the moderating role of eclipsing, through manipulating two levels of eclipsing in advertising: (1) high eclipsing, when the celebrity is the focus, and (2) low eclipsing, when both the celebrity and brand are emphasized. Consumers who have a weak attachment to the celebrity endorser report a more positive brand attitude when they see the celebrity and endorsed brand both emphasized in an advertisement (low eclipsing) than when the celebrity overshadows and dominates the brand (high eclipsing), irrespective of whether consumers perceive the celebrity and brand to match or mismatch. For consumers with strong celebrity attachment, high eclipsing enhances brand attitude, regardless of whether they perceive the celebrity and brand to either match or mismatch. The findings of these studies have significant implications for advertisers and brand managers in the execution of their advertisements featuring endorsements.

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