The mirror test is an experiment used to assess self-recognition. In a well-known version of this test, a researcher placed a red dot of paint on children's noses before putting them in front of a mirror (Amsterdam, 1972). Touching their own noses indicates self-recognition, which is demonstrated by humans and a few other species (Archer, 1992).

Mirror Test (Amsterdam, 1972)

Self-concept is defined as an understanding of who one is. Infants do not initially possess a self-concept, but developing it is a key milestone of childhood.

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The primary psychosocial milestone of childhood is the development of a positive sense of self, similar to how attachment is the main psychosocial milestone of infancy.

Primary Psychosocial Milestone of Childhood

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

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