Warranted inferences of mediation and possibility of a threshold effect: Verifying the mediating effects of anger in situational crisis communication theory

Scholars have called for communication research to verify the causal claims of mediation models from a research design perspective, instead of only proving mediation statistically. This study validates whether and how anger mediates the causal effects of crisis types on publics’ responses in Situational Crisis Communication Theory (SCCT), including reputation, negative word-of-mouth intention, and purchase intention in China. Two experiments were conducted based on the experimental-causal-chain design. Results in Study 1 demonstrate that the causal relationships between three crisis types and publics’ emotional and other responses in China are consistent with findings in Western contexts. In Study 2, the results of a 2 (anger: low, high) x 3 (crisis types: victim crisis, accidental crisis, preventable crisis) factorial experiment reveal significant mediating effects of anger on publics’ responses in the victim and accidental crisis conditions, but not for preventable crises. This novel finding suggests the possibility of a threshold effect of anger in the mediating process. Specifically, anger has a mediating effect on publics’ responses when it is below the high-anger threshold. However, anger may no longer be the mediator when it exceeds this threshold. This finding empirically challenges the common assumption that emotions have a linear relationship with publics’ responses, thus offering a new research avenue and deeper understanding of how emotions function in crises. Therefore, this research serves as a pioneer, calling for future studies to validate other theories involving mediation to yield fruitful insights.     

蒙古帝国时期的东西方贸易

1200年到1400年,蒙古帝国对欧亚大陆的统治开创了近两个世纪的“蒙古和平”。尽管不少学者对和平的真实性表示怀疑,但单纯从物质文化交流的角度看,蒙古帝国始终是和平的。在这样一个和平安全的环境中,东西方贸易得以迅速发展。贸易的繁荣有力地推动了欧亚各地的商业发展,商品种类极大丰富,商业城市高度繁盛,商贸路线开放畅通,商人活动范围空前扩大。虽然,蒙古人之间的不和与冲突对东西方贸易的发展产生了一些不利影响,但从大环境来看还是利大于弊,至少相较蒙古帝国之前有了很大改善。     

基本医保“系统老龄化”的门限效应与地区差异

本文利用2001—2019年省际面板数据,基于门限效应检验的结果划分了基本医保系统老龄化的不同区域,考察了系统老龄化和制度覆盖率对统筹基金收支平衡能力的影响,结果表明:我国基本医保的系统老龄化程度整体呈现持续上升趋势;不同地区在退休在职比、覆盖率和统筹基金结余率上的差异显著,东北地区的系统老龄化问题最为严重;系统老龄化对统筹基金收支平衡的影响存在明显的"门限特征",在高系统老龄化区间扩大制度的覆盖面无法有效改善统筹基金的运行状况。基于此,需要科学对待基本医保系统老龄化和统筹基金收支状况的地区差异,重点关注东北地区,积极推进基本医保统筹层次的提升。     

重元素化学中的低价态和周期性趋向

用相对论效应和电子相关效应对周期表中第ⅢA族和第6周期氢化物和卤化物进行理论研究。