There is broad theoretical consensus that one way to promote climate-friendly behavior is to increase people's belief that their actions can make a difference (individual response efficacy). However, attempts to increase individual efficacy beliefs about climate change through explicit instruction have generally failed. In the current paper, two experiments tested an intervention designed to convince people that their individual actions spread and multiply, causing larger changes in interconnected systems (also known as ripple or butterfly effects). Participants were presented with four principles which explain how individual actions can have aggregate effects at the collective level: social norms, consumer pressure, political pressure, and snowball effects. 

https://www.sciencedirect.com/science/article/abs/pii/S0022103121001207