<P> The Strange Situation procedure was formulated to observe attachment relationships between a caregiver and children between the age of nine and 18 months . It was developed by Mary Ainsworth , a developmental psychologist Originally it was devised to enable children to be classified into the attachment styles known as secure , anxious - avoidant and anxious - ambivalent . As research accumulated and atypical patterns of attachment became more apparent it was further developed by Main and Solomon in 1986 and 1990 to include the new category of disorganized / disoriented attachment . </P>
<P> The Strange Situation procedure was formulated to observe attachment relationships between a caregiver and children between the age of nine and 18 months . It was developed by Mary Ainsworth , a developmental psychologist Originally it was devised to enable children to be classified into the attachment styles known as secure , anxious - avoidant and anxious - ambivalent . As research accumulated and atypical patterns of attachment became more apparent it was further developed by Main and Solomon in 1986 and 1990 to include the new category of disorganized / disoriented attachment . </P>
who designed the strange situation to measure attachment
who designed the strange situation to measure attachment
Mary Ainsworth
Mary Ainsworth