Xu Pengfei, Zhang Yuanyuan
This study examines the influence of online reviews on young consumers’ purchase intentions in the context of food delivery platforms, using Meituan as a representative case to investigate the effects of three key factors-review quantity, review length, and emotional valence-as well as their interaction effects. A 2×2×2 between-subjects experimental design was employed, with university students as the primary sample. Through a simulated food-ordering scenario conducted before lunchtime, the study analyzed how different review conditions affected purchase intention. The findings indicate that, first, a greater number of reviews significantly enhances young consumers’ purchase intentions. Second, longer reviews are more likely to increase consumers’ trust and willingness to purchase. Third, when considered independently, positive reviews exert a more significant effect on purchase intention, whereas negative reviews do not show a stable direct effect. However, at the level of interaction effects, negative reviews demonstrate stronger influence under specific conditions. In particular, when review quantity is high and review content is lengthy, negative reviews are more likely to attract young consumers’ attention, shape their risk perceptions, and alter their decision-making. Accordingly, the study argues that online reviews on food delivery platforms function not only as mechanisms of information transmission, but also as important bases through which young consumers construct trust and reduce uncertainty in the platform economy. The findings further suggest that the effects of review-related variables are not simply linear, but instead exhibit significant interaction patterns. This study provides empirical implications for review management by food delivery merchants, the design of platform reputation systems, and research on youth consumer behavior. Nevertheless, the study is limited by its focus on a single product category, a relatively restricted sample structure, and the exclusion of image-based reviews. Future research may extend the analysis to different product categories, more diverse youth populations, and multimodal review contexts in order to improve external validity and explanatory power.