Mary Ainsworth's original schema for attachment classification differentiated only three types: A, B, and C, but later researchers discovered a fourth category, type D.

Authors

• Person: Not available Organization: Lumen Learning
  Emotional Development and Attachment | Lifespan Development

Sources

• Emotional Development and Attachment | Lifespan Development courses.lumenlearning.com Lumen Learning via serper

Referenced by nodes (2)

• Disorganized attachment concept
• Mary Ainsworth entity