“Unless or until a vaccine is developed, or we discover medicines to treat the virus, our means of controlling the spread of infection depend on behavioural changes and hence upon human psychology. … Indeed, all we can do to control the virus right now is get people to behave appropriately — to ‘do the right thing.’ … However, it is not enough to understand that we need psychology as a core part of efforts against COVID-19. It is also important to understand what sort of psychology helps or hinders in those efforts.”