As a result of the large number of media used and a variety of objectives pursued by the various Public Communication of Science (PCS) activities, their evaluation turns into a daunting task. Therefore, a general taxonomy for all the approaches used by PCS could be helpful in order to differentiate their effects and to measure their results. A general format is proposed for a fast and easy evaluation of PCS efforts and to share a common language with all science communicators, who need to easily compare the results of this growing activity.

The great increase in visitor studies on science museums and centres (SMC) has been marked also by a shift in approach to these studies, paying more attention to the social context of the visits and the nature of the experience. Evaluations have influenced directly SMC exhibition practices but more attention needs to be paid in research about the personal experiences of visits, how these are interpreted and how they contribute to scientific literacy.