Pro-Veganism on Instagram: Effects of User-Generated Content (UGC) Types and Content Generator Types in Instagram-Based Health Marketing Communication about Veganism

Abstract:
Purpose: Through two experiments, this study assessed source and message effects of Instagram-based pro-veganism messages.
Design/methodology/approach: Experiment 1 (N = 294) examined effects of organization (brand vs nonprofit) and message types (egoistic vs altruistic) on consumer responses to Instagram-based pro-veganism content. Experiment 2 (N = 288) examined effects of source type (celebrity vs noncelebrity) and message valence (positive vs negative) on consumer responses to Instagram-based pro-veganism content.
Findings: Results demonstrated significant main effects of organization type, with consumers indicating more positive attitudes and higher credibility toward the brand. Significant main effects of message type were also found, with altruistic messages eliciting higher perceived information value than egoistic messages. Subjective norms had moderating effects on attitude toward the organization, while attitude toward veganism had moderating effects on perceived information value. Results also indicated significant main effects of message valence on perceived information value of pro-veganism Instagram posts and significant interaction effects of the two manipulated factors on intention to spread electronic word-of-mouth (eWOM) about pro-veganism.
Originality/value: Implications for use of Instagram-based health marketing communication about veganism were discussed. Specifically, organizations looking to use social media to influence attitudes and behavioral intentions toward health issues should seek to reach their target audiences through selecting endorsers and messages that will optimally present the health issue in a relatable and engaging way.

The Roles of Celebrity Endorsers’ and Consumers’ Vegan Identity in Marketing Communication about Veganism.

Abstract: Celebrities endorsing veganism may exert social influence on consumers’ attitude toward veganism and behavioral intention to become vegan. A between-subjects online experiment (N=303) examined the effects of consumers’ eating habits (meat eater versus non-meat eater) and celebrities’ vegan identity (altruistic motivation versus egoistic motivation) on various outcomes of health communication about veganism. Results of statistical analyses revealed a significant multivariate main effect of consumers’ eating habits on health consciousness, intention to spread electronic word-of-mouth (eWOM) about veganism, and behavioral intention to become vegan. The results also reveal interaction effects between vegan celebrity endorsers’ motivation and consumers’ eating habits on health consciousness, intention to spread eWoM about veganism, and behavioral intention to become vegan. Additionally, moderating effects of source credibility, subjective norms, and identification with the vegan celebrity endorser were found. This study sheds some light on celebrity endorsements of veganism and effects of message framing on consumers’ veganism-related attitude and behavioral intention.

Pro-Veganism on Instagram: Effects of User-Generated Content and Message Endorser Types in Instagram-Based Pro-Veganism Posts

Paper accepted for presentation at the International Communication Association Annual Conference, Gold Coast, Australia, May 2020.

Abstract: Through two experiments, this study assessed source and message effects of Instagram-based pro-veganism messages. Experiment 1 (N = 294) examined effects of organization (brand versus non-profit) and message types (egoistic versus altruistic), while experiment 2 (N = 288) examined effects of source type (celebrity versus non-celebrity) and message valence (positive versus negative). Results demonstrated significant main effects of organization type, with consumers indicating more positive attitudes and higher credibility towards the brand. Significant main effects of message type were also found, with altruistic messages eliciting higher perceived information value than egoistic messages. Subjective norms had moderating effects on attitude towards the organization, while attitude towards veganism had moderating effects on perceived information value. Results alsoindicated significant main effects of message valence on perceived information value, and significant interaction effects of the two manipulated factors on intention to spread electronic word-of-mouth. Implications for future research and practical applications are discussed.

 

Interaction Effects of Source Type and Message Valence in Instagram-Based Advertising Messages About Veganism

Abstract: A between-subjects 2 (source type: celebrity versus non-celebrity) x 2 (message valence: positive versus negative) factorial experiment (N = 288) examined the effects of source type and message valence on various outcomes of Instagram-based advertising messages about veganism. Results of data analyses indicate significant main effects of message valence on perceived information value of pro-veganism posts on Instagram and significant interaction effects of the two manipulated factors on consumers’ intention to spread electronic word-of-mouth (eWOM) about pro-veganism. Furthermore, perceived prosocial characteristics of the pro-vegan source and intention to build an online friendship with the source significantly moderated the effects of endorser type and message valence on perceived information value and eWOM intention. Theoretical contributions and practical implications are discussed.