1. Brooker, R.J., Buss, K.A., Lemery-Chalfant, K., Aksan, N., Davidson, R.J., & Goldsmith, H.H. (2013). The development of stranger fear in infancy and toddlerhood: Normative development, individual differences, antecedents, and outcomes. Developmental Science, 16, 864– 878.
2. Brooks, J., & Lewis, M. (1976). Infants’ responses to strangers: Midget, adult, and child. Child Development, 47, 323–332.
3. LoBue, V. & Adolph, K.E. (2019). Fear in infancy: Lessons from snakes, spiders, heights, and strangers. Developmental Psychology, 55, 1889-1907.
4. Santrock, J. W. (2014). Child development (14th ed.). New York, NY: McGraw-Hill.