Peter John‘s recent book investigates how to get the best out of nudge theories, considering positive behaviour changes in recycling, volunteering, voting, and petitioning, and provides some unexpected insights about some interventions, finds Sander van der Linden. Nudge, Nudge, Think, Think: Experimenting with Ways to Change Civic Behaviour. Peter John, Sarah Cotterill, Alice Moseley, Liz Richardson, Graham Smith, Gerry Stoker and Corinne Wales. Bloomsbury Academic Publishing. September 2011.