Article

Maras, Pamela F., Lewis, A. and Simonds, Laura M. (1999) Elephants, donuts and hamburgers: young children co-operating to co-operate and co-operating to compete in two primary schools. Educational Psychology, 19 (3). pp. 245-258. ISSN 0144-3410 (doi:https://doi.org/10.1080/0144341990190301)