关键词: 感激表达, 回音效应, 旅游, 游客, 员工

Abstract: Gratitude expression is a ubiquitous behavior in interpersonal interactions. Prior research has primarily examined its positive effects from the perspective of single interactions or a single actor, with limited attention to its dynamics across ongoing interactions. In particular, tourism service interactions are characterized by openness in norms of gratitude expression, interactional reciprocity, continuity, and network connectivity, which make gratitude expression more likely to be reciprocated and extended across multiple rounds of interaction. To address this gap, the present research proposes the echo effect of gratitude expression, which captures the dynamic process through which gratitude expressions extend their influence via repeated feedback in interactions. Building on this conceptual framework, this research advances the literature through two research modules comprising three studies: the first constructs and tests the theoretical framework of the echo effect, and the second examines the underlying mechanisms of gratitude expression from a bidirectional interaction perspective. This work extends gratitude research from a static to a dynamic interactional perspective and provides a novel integrative framework for understanding the sustained effects of emotional expressions in service contexts.