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Climate change adaptation capacity remains low among vulnerable communities in developing countries such as Vietnam. Vector-borne diseases as dengue fever are increasing as a result of changing weather patterns. This study aims to examine the impact of key psychological variables in the Theory of Reasoned Action, the Theory of Planned Behavior, an Extended Parallel Process Model and the Social Cognitive Theory on the intention of schoolchildren to engage in climate change adaptation behavior-in this study, practices which would help reduce the risks of contracting dengue fever. It also seeks to identify the most salient predictors of the behavioral intention across these theories. Data were obtained from 796 Vietnamese schoolchildren who completed questionnaires measuring constructs of the four theories. Multivariate data analysis demonstrated that self-efficacy and severity appeared to be significant and consistent predictors of the individual's intention to reduce dengue fever. The results provide practical suggestions for the use of the theorical constructs tested in climate change communication campaigns in Vietnam and insights generally on pro-environmental behavior change.

Shrimp aquaculture in Vietnam is in the process of being transformed into a major industry around the intensification of the production system. The experiences of other countries in the region, especially in Thailand where high input production systems dominate, suggests that now is a critical time for intervention to redirect industry into pathways that are more sustainable ecologically, socially, and economically. In Thailand, years of experience with intensified systems and a complex industrial organization has not led to sustainable solutions. The challenge here is for society to regain control and then to redirect the transformation along more efficient and benign pathways. Our analyses suggest that current pathways in both countries are unlikely to lead to a sustainable industry. A complete transformation of the way shrimp are grown, fed, processed, distributed, and regulated is needed.