Social influence and social change-
CPS- Nolan et al (2008) changed people energy usage using messages hung up on peoples front doors daily (California + San Diego) for a month, having signs comparing to others or just asking to reduce energy uses, significant decreases when compared to others.
CPW- Foxcroft et al (2015) reviewed part of the ‘gold standard’ collection, using 70 studies approaching alcohol usage with students, found a small reduction in drinking quantity but no effect on frequency, meaning that social influence doesn’t produce long term social change.