John Bowlby began investigating attachment theory in the 1930s and later collaborated with Mary Salter Ainsworth in 1950 to expand the research.

Authors

• Person: Not available Organization: ZERO TO THREE
  Early Childhood Attachment Styles: What Parents and Professionals ...

Sources

• Early Childhood Attachment Styles: What Parents and Professionals ... www.zerotothree.org ZERO TO THREE via serper

Referenced by nodes (3)

• John Bowlby entity
• attachment theory concept
• Mary Ainsworth entity