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Attachment01:20

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Attachment is vital for infant development, as warm social interactions support growth and well-being. In a classic 1958 study by Harry Harlow, the significance of warmth and comfort in forming attachments was examined. Harlow separated newborn monkeys from their mothers and provided two artificial "mothers": one made of cold wire and the other covered in soft cloth. Despite the wire mother offering food, the infant monkeys preferred the comfort of the cloth mother, demonstrating that...
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Parent-child interactions lay the foundation for how we understand relationships throughout life. These interactions are not uniform across families; instead, they are shaped by a range of environmental, emotional, and behavioral factors unique to each caregiver-child dynamic. Social psychologists study these early relationships to understand how patterns formed in infancy influence social functioning and interpersonal behavior in adulthood.Attachment Theory and Early Relational ModelsJohn...
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Related Experiment Video

Updated: Apr 28, 2026

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior
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Attachment to inanimate objects and early childcare: A twin study.

Keren Fortuna1, Liora Baor2, Salomon Israel1

  • 1Department of Psychology, The Hebrew University of Jerusalem Jerusalem, Israel.

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|June 7, 2014
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Summary

Children

Keywords:
LISTchildcareday careobject attachmenttransitional object

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Area of Science:

  • Developmental Psychology
  • Behavioral Genetics

Background:

  • Extensive non-maternal childcare is crucial for child development.
  • Children may develop object attachment as a coping mechanism for caregiver separation during childcare.
  • Understanding factors influencing object attachment is important for child development research.

Purpose of the Study:

  • To investigate object attachment in young children.
  • To estimate genetic and environmental contributions to object attachment using twin studies.
  • To assess the role of childcare quantity in the development of object attachment.

Main Methods:

  • Utilized a twin design with 1122 3-year-old twin pairs.
  • Mothers reported on children's object attachment and childcare experiences.
  • Analyzed heritability and shared environmental influences on object attachment.

Main Results:

  • Heritability and shared environment each accounted for 48% of the variation in object attachment.
  • Childcare quantity explained 2.2% of the shared environmental effect on object attachment.
  • Children in half-day childcare were less likely to exhibit object attachment than those in full-day care.

Conclusions:

  • Object attachment is influenced by both genetic and environmental factors.
  • Childcare quantity is a significant environmental factor associated with object attachment.
  • Findings suggest a link between childcare duration and children's coping mechanisms for separation.