Exploring a customer engagement spillover effect on social media: the moderating role of customer conscientiousness

Purpose Though prior research has addressed customer engagement (CE) with a focal object (e.g. a brand), the dynamics characterizing customers' engagement with different objects and the potential spillover from a customer's engagement with one object to that with another remains tenuous, exposing an important literature-based gap. The authors, therefore, develop a model proposing the existence of a spillover effect from customers' brand engagement to their engagement with brand-related content and suggest customers' personality trait of conscientiousness to moderate this effect. Design/methodology/approach An online survey-based experiment using 380 Danish Facebook users was conducted to test the model. Findings The results suggest customers' brand engagement as a significant predictor of their engagement with brand-related content, corroborating the proposed spillover effect. A weaker spillover effect is observed for highly (vs less) conscientious customers, substantiating the moderating role of customer conscientiousness. Moreover, customer conscientiousness is found to interact with brand content-related (i.e. commenting/content creation) task type and brand type (i.e. utilitarian/hedonic) (e.g. more conscientious customers are less likely to engage in brand-related content creation vs. commenting tasks), weakening the spillover effect. Originality/value This study extends prior research by quantitatively corroborating an intra-individual CE-based spillover effect from customers' brand engagement to their engagement with brand-related content. The authors also unearth a moderating role of customer conscientiousness, which interacts with brand- and brand content-related task type, on the spillover effect, informing the development of digital marketing strategies.