The Group Approach can involve turning negative peer pressure into positive peer pressure, such as in reducing bullying through teamwork. Another example is study groups, which can be extraordinarily powerful in improving academic performance -- Urie Triesman's innovations in learning Calculus at the University of California, Berkeley in the 1970's. Kurt Lewin, the founding father of social psychology said it best, “Group dynamics can be the biggest barriers and the biggest motivators for change.” Muhammad Yunus and the Women of Jobra and Nicholas Carlisle and No Bully: the Power of Positive Peer Pressure.