Do kiosks outperform cashiers? An S-O-R framework of restaurant ordering experiences

Purpose This study aims to compare the performance of self-service kiosks in a quick-service setting with the performance of cashiers. In particular, this study explores both internal responses and external responses between the two ordering methods with the moderating role of crowdedness. Design/methodology/approach This study develops a theoretical framework based on the stimulus-organism-response (S-O-R) model. A 2 × 2 field experiment was conducted in a real quick-service outlet to collect data. Findings The results reveal that customers reported a better experience when using self-service kiosks compared to placing orders with cashiers. However, cashiers generated more revenue for the quick-service outlet than kiosks. Significant interaction effects were found for external responses. Customers spent more time placing orders with cashiers than with kiosks in less crowded periods, while cashiers generated more sales than kiosks during busier periods. Originality/value This study enriches the hospitality and tourism literature by applying the S-O-R framework in an experimental design incorporating both internal and external responses. The findings on the interaction between ordering methods and crowdedness on external responses provide practical insights for quick-service restaurant operators to find a balance between technology and human services.