Chatbots in retailers' customer communication: How to measure their acceptance?

Currently, online retailers evaluate whether chatbots-software programs that interact with users using natural languages-could improve their customers' satisfaction. In a retail context, chatbots allow humans to pose shopping-related questions and receive answers in natural language without waiting for a salesperson or using other automated communication forms. However, until now, it has been unclear which customers accept this new communication form and which factors determine their acceptance. In this paper, we contrast the well-known technology acceptance model (TAM) with the lesser known uses and gratifications (U&G) theory, applying both approaches to measure the acceptance of the text-based Emma chatbot by its target segment. Emma was developed for the prepurchase phase of online fashion retailing and integrated into Facebook Messenger by the major German online retailer Zalando. Data were collected from 205 German Millennial respondents in a usability study. The results show that both utilitarian factors such as authenticity of conversation and perceived usefulness, as well as hedonic factors such as perceived enjoyment, positively influence the acceptance of Emma. However, privacy concerns and the immaturity of the technology had a negative effect on usage intention and frequency. The predictive power of both models was similar, showing little deviation, but U&G gives alternative insights into the customers' motivation to use Emma compared to the TAM.