Thousands of years before the power of positive thinking was scientifically proven and popularized, people knew about the effects of group prayer. Lynne McTaggart finds a scientific explanation for this phenomenon.• What happens when 8 people deliberately think about the same thing.• The boomerang effect of group intention.• Amazing results of numerous experiments. Lynne MacTaggart is the author of seven best-selling books about the work of the brain and consciousness . She is included in the list of the 100 most influential spiritual leaders of our time. Her books have been translated into 30 languages.