11 January 2012 UTC There is a vast body of work on this topic called motivation crowding theory The great news is that while the authorities on the subject have always said that monetary rewards can strengthen intrinsic motivation under some conditions recent work suggests that those conditions have become far more well understood For example intrinsic interest is actually higher under pay for individual performance Fang M and Gerhart B 2011 Does pay for performance diminish intrinsic interest International Journal of Human Resource Management Median FRT response time was reduced from 90 to 70 days a 22 reduction in the presence of payments With payments only 1 of the FRTs exceeded six months without payments 16 of the FRTs exceeded six months Thompson G D et al 2010 Does Paying Referees Expedite Reviews Results of a Natural Experiment Economic Journal 76 3 678 92 monetary payments as well as intrinsic motivation have roles in the real life decision to supply volunteer work but monetary rewards do not crowd out intrinsic motivation Fiorillo D 2011 Do monetary rewards crowding intrinsic motivations of volunteers Some empirical evidence for Italian volunteers Annals of Public and Cooperative Economics 82 2 139 65 21 17