Groups of experimentally naive Swiss mice, 20 days old, were exposed to a varying quality of socially transmitted information needed to solve a food-finding problem. The problem consisted of opening a rotating door of an apparatus. Mice that lived with a demonstrator opening the apparatus and mice that lived with an adult manipulating but not opening the apparatus were the most efficient animals in solving the problem. In addition other groups of mice had different non-social experiences with the problem. The data indicate that these animals did not improve their ability in performing the task compared with control animals. In essence the present results suggest that mice were capable of learning aspects of the opening techinque by social learning rather than by trial and error.