Constant et al. identified positive motivators for individuals to contribute even when the personal costs may be high. These include the enhancement of positive self esteem, the reinforcement of an individual’s understanding of their own knowledge, and the shared values of organizational citizenship . Goodman and Darr identified the contextual conditions in the organization affecting an individual’s decision to share his/her knowledge. They determined that a sharing culture is necessary prior to implementation of such a system. They also identified “shared rewards” as an important element in producing such a culture. Such intangible and “cultural” variables may well constitute the currently “accepted wisdom” among KM practitioners (e.g. ). However, overall, these results are not consistent.