Examining Factors Influencing Public Knowledge, Risk Perception, and Policy Support for Waste Classification: A Multigroup Comparison of the Cognitive Mediation Model Based on Gender Differences

Using the cognitive mediation model, this study aims to examine how media attention affects knowledge of the ways to implement waste classification via different information processing strategies, and ultimately influences risk perception of noncompliance with waste classification and policy support for waste classification. A total of 1,011 Chinese citizens participated in our survey using convenience sampling. The results demonstrated that media attention enhanced individuals' knowledge via elaboration. The knowledge acquisition subsequently increased risk perception, which, in turn, strengthened policy support for waste classification. Furthermore, the multigroup structural equation modeling was conducted to determine differences in the cognitive meditation model between males and females. Compared with females, males with a high level of risk perception were more likely to support waste classification policies. Theoretical and practical contributions are discussed as well.