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3. Ball, C. L., Smetana, J. G., & Sturge-Apple, M. L. (2017). Following my head and my heart: Integrating preschoolers’ empathy, theory of mind, and moral judgments. Child Development, 88, 597–611.
4. Blatchford, P. (1998). Social life in school: Pupils’ experience of breaktime and recess from 7 to 16 years. London: Falmer Press. (Chapter 6).
5. Blatchford, P., Pellegrini, A. D., & Baines, E. (2016). The child at school: Interactions with peers and teachers. New York: Routledge.