according to bowlby what are the four stages in the development of attachment?
Bowlby specified four phases of child-caregiver attachment development: 0-3 months, 3-6 months, 6 months to 3 years, and 3 years through the end of childhood. Expanding on Bowlby's ideas, Mary Ainsworth pointed to three attachment patterns: secure attachment, avoidant attachment, and resistant attachment.