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Breaking the Plastic Habit in ASEAN: Behaviour-Centred Interventions for Lasting Plastic Reduction
Summary
Six pilot programs across Southeast Asian countries found that simple behavioral tricks—like making eco-friendly choices easier, adding social pressure, and connecting them to local values—actually got people, businesses, and institutions to cut back on single-use plastic, not just say they intended to. This matters because less plastic waste means less of it breaking down into microplastics that end up in our water, food, and eventually our bodies, where research suggests they may pose health risks. The takeaway: smart policy design that accounts for how people actually behave (not just what they say they'll do) could be a more effective tool for fighting plastic pollution than bans or
Plastic pollution is a growing challenge in Southeast Asia, where rapid urbanisation and rising consumption are driving sharp increases in plastic waste. While traditional regulations such as plastic bans and information campaigns are important, they often fail to shift deeply ingrained consumption and waste management habits on their own. This new report demonstrates how applying behavioural science to the challenge of plastic pollution can effectively bridge the “intention–action gap” among individuals, institutions, and businesses.Phase II of Breaking the Plastic Habit in ASEAN explored how insights from the behavioural sciences can help close this gap through the application of a psychosocial theory of change and the use of behaviour-centred design processes. Through six pilot interventions inCambodia, Indonesia, Lao PDR, the Philippines, Thailand, and Viet Nam, the project innovated homegrown behaviour-centred approaches to bring about a lasting reduction in plastic consumption.The pilots achieved measurable reductions in single-use plastic consumption and improvements in waste management among individuals, institutions, and businesses. The findings show that lasting change is most likely when sustainable choices are easy, socially reinforced, and connected to local values. Integrating behavioural insights into policy design can therefore strengthen ASEAN’s efforts to tackle plastic pollution.