The origins of moral sensitivities: Probing infants' expectations, evaluations, generalization, and enforcement of

Jessica A Sommerville1

  • 1Department of Psychology, The University of Toronto, Toronto, ON, Canada.

Insights

This study reveals that infants develop moral expectations and evaluations by their second year, driven by daily experiences. Early moral enforcement differs significantly from later childhood, lacking punishment.

Area of Science:

  • Developmental Psychology
  • Moral Psychology
  • Infant Cognition

Background:

  • Understanding the origins of morality in early development is challenging due to infants' limited behavioral expression.
  • Existing research often struggles to disentangle innate moral capacities from learned behaviors.

Purpose of the Study:

  • To investigate the emergence of moral sensitivities in infancy and early childhood.
  • To analyze the components of moral responses, including expectations, evaluations, generalization, and enforcement.
  • To differentiate infant moral responses from those observed in later childhood.

Main Methods:

  • A multi-pronged, multi-method approach was employed to dissect the moral response.
  • Detailed observation and analysis of infant behavior in the second year of life.
  • Comparative analysis of moral response components across developmental stages.

Main Results:

  • Many moral sensitivities, including expectations and evaluations, emerge by the second year of life.
  • These early moral sensitivities are closely linked to and likely influenced by infants' everyday experiences.
  • A key qualitative difference is the absence of punishment as an enforcement mechanism in infancy compared to later childhood.

Conclusions:

  • Early moral development is significantly shaped by environmental experiences.
  • Infant moral cognition exhibits distinct characteristics, particularly in behavioral enforcement.
  • Further research is needed to understand causal inputs, the distinction between moral and social cognition, and the morality-cognition-behavior gap.

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