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Book

Patterns of Attachment: A Psychological Study of the Strange Situation

Also known as Patterns of Attachment, Ainsworth et al. (1978)

Ainsworth and colleagues' 1978 report of the Baltimore study and the Strange Situation

At a glance

Also on this page: Key facts · Links · Sources · Related pages

Why it matters

Key facts

Authors
Mary D. Salter Ainsworth, Mary C. Blehar, Everett Waters, Sally N. Wall1
Published
1978; Psychology Press Classic Editions 20152
Publisher
Lawrence Erlbaum Associates, Hillsdale NJ (1978); Psychology Press (2015)2
Pages
466 (2015 edition)1
ISBN
978-0-89859-461-4 (1978); 978-1-84872-682-6 (2015)2
Design
Home observations of Baltimore families through the first year, then the Strange Situation at about one year3
Influence
Hundreds of Strange Situation studies followed; attachment and the procedure came to seem synonymous3

What it found

  1. Reunions reveal the pattern3

    Some one-year-olds were angry and ambivalent when mother returned; others avoided her; most sought contact.

  2. Lab matches home3

    Infants ambivalent or avoidant on reunion had less harmonious relationships with their mothers at home.

  3. Responsive mothers, less crying3

    In the Baltimore project, babies whose mothers responded promptly to crying early on cried less late in the first year.

Key ideas

  1. The Strange Situation4

    Eight short episodes in a playroom: a stranger enters, mother leaves twice and returns, once leaving the baby alone.

  2. Three groups: A, B, C4

    Avoidant (A), secure (B) and ambivalent or resistant (C); Main and Solomon later added a fourth, disorganized.

  3. Secure base behavior3

    Infants explored more with mother present than after a stranger came in or mother left.

  4. Expectations from experience3

    Ainsworth explained the patterns by what infants had come to expect from earlier satisfying or rejecting care.

Examples from the book

  1. Kicking at mother3

    Ambivalent babies cried and wanted contact but would not "sink in" when picked up, kicking or swiping at their mother.

  2. Book outline1

    Chapters cover procedures, each episode, links with home behavior, subgroups, and maternal sensitivity scales in the appendices.

Criticism and limits

  1. Small and narrow sample5

    The original Baltimore classification rested on 26 middle-class American children, a criticism of bias.

  2. Artificial and mother-centred5

    Critics said the procedure lacked ecological validity and focused on the mother rather than a general style.

  3. Culture4

    Brief separations may not mean the same everywhere; Japanese infants, rarely separated, were a case in point.

  4. Global spread holds4

    A meta-analysis of 2,000 dyads found 21% A, 65% B, 14% C, broadly matching the 1978 distributions.

Connections

Sources

  1. Patterns of Attachment, Psychology Press Classic Editions (Routledge) (opens routledge.com)
  2. Attachment theory (Wikipedia) (opens en.wikipedia.org)
  3. Bretherton I. The origins of attachment theory: John Bowlby and Mary Ainsworth, Developmental Psychology 1992 (opens psychology.sunysb.edu)
  4. Strange situation (Wikipedia) (opens en.wikipedia.org)
  5. Mary Ainsworth (Wikipedia) (opens en.wikipedia.org)

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