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THE STRANGE SITUATION: Assessing Infant Attachment

Core Concept Overview

Mary Ainsworth's Method (1970s)

Mary Ainsworth developed the Strange Situation in the 1970s, a structured observational assessment designed to explore the quality of attachment between infants (12-18 months old) and their caregivers. It remains a key method in attachment research.

Procedure: Eight Key Episodes

1

Phase 1

Parent and infant alone, exploring the room.
2

Phase 2

Stranger enters and talks to parent.
3

Phase 3

Parent leaves infant with stranger (stranger anxiety).
4

Phase 4

Parent returns and stranger leaves (reunion behavior).
5

Phase 5

Parent leaves the infant alone (separation anxiety).
6

Phase 6

Stranger returns and interacts with infant.
7

Phase 7

Parent returns and greets infant again (final reunion).

Key Behaviors Observed

The procedure is designed to provoke mild stress and assess these core areas:

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Secure Base Use

Exploration and use of caregiver as a secure base.
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Stranger Reactions

Reactions to stranger presence.
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Separation/Reunion

Response to separation and reunion with the caregiver.

Identifying Attachment Types

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Based on these observations, Ainsworth identified three main attachment types, foundational to understanding early social development.

The Three Main Attachment Classifications

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Secure (Type B)

Infants use the caregiver as a secure base to explore. Show moderate distress when separated and are happy and easily comforted upon reunion. Associated with sensitive, responsive caregiving. (60-70% of US infants).
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Insecure-Avoidant (Type A)

Infants show little distress when separated; they avoid or ignore the caregiver on reunion. Often suppress attachment needs and avoid closeness. Linked to rejecting or insensitive caregiving. (Approximately 20% of infants).
↔️

Insecure-Resistant (Type C)

Infants show intense distress on separation but resist comfort upon reunion, may show clinginess combined with anger or difficulty settling. Correlates with inconsistent caregiver behavior. (10-15% of infants).

Cultural Context of Attachment

Van Ijzendoorn and Kroonenberg’s Meta-Analysis (1988)

Conducted a meta-analysis of 32 studies across eight countries. Found that secure attachment was the most common type in all cultures, suggesting universality. However, the proportions of insecure types varied significantly: In Germany, avoidant attachment was higher, and in Japan and Israel, resistant attachment was more common. Cultural childrearing practices influence the prevalence of attachment styles.

Analyzing Interpretation

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Is the Strange Situation a universally fair measure?
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It may be culturally biased toward Western norms, where exploration is valued. Behaviors classified as avoidant or resistant may actually be adaptive in certain cultural contexts and not indicate true insecurity.

Evaluating the Method

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Strengths: Highly systematic and replicable procedure. Strong ecological validity in assessing attachment behaviors. Predictive validity: associated with later social and emotional outcomes.
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Limitations: May not reflect real-world situations fully. Limited to infants under two years, focusing on short-term separations. Cultural biases and variations in interpretation. Parent and child temperament may also influence results.
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The Strange Situation Deck
Q
Who developed the Strange Situation?

Who developed the Strange Situation?

A
Answer

Mary Ainsworth in the 1970s.

Q
Primary purpose of the Strange Situation?

What is the primary purpose of the Strange Situation?

A
Answer

To assess the quality of attachment between infants and their caregivers.

Q
Typical infant age for Strange Situation?

At what infant age is the Strange Situation typically used?

A
Answer

12-18 months old.

Q
Number of episodes in Strange Situation?

How many episodes are in the Strange Situation procedure?

A
Answer

Eight episodes.

Q
Key behaviors observed?

Name three key behaviors observed during the Strange Situation.

A
Answer

Exploration using caregiver as a secure base, reaction to stranger, response to separation and reunion.

Q
Description of Secure Attachment (Type B)?

What characterizes a Secure Attachment (Type B)?

A
Answer

Infant explores comfortably, shows moderate distress on separation, and is easily comforted on reunion.

Q
Percentage of secure attachment in US infants?

What percentage of US infants typically display secure attachment?

A
Answer

Approximately 60-70%.

Q
Behavior of infants with Insecure-Avoidant Attachment (Type A)?

How do infants with Insecure-Avoidant Attachment (Type A) behave?

A
Answer

Show little distress on separation and avoid or ignore the caregiver on reunion.

Q
Caregiving style linked to insecure-avoidant attachment?

What caregiving style is linked to insecure-avoidant attachment?

A
Answer

Rejecting or insensitive caregiving.

Q
Behavior of infants with Insecure-Resistant Attachment (Type C)?

Describe the behavior of infants with Insecure-Resistant Attachment (Type C).

A
Answer

Show intense distress upon separation and resist comfort on reunion, often clingy and angry.

Q
Cultural variations found by van Ijzendoorn and Kroonenberg?

What cultural variations did van Ijzendoorn and Kroonenberg find?

A
Answer

Secure attachment was most common universally, but proportions of avoidant and resistant attachments varied by culture.

Q
Strength of the Strange Situation?

What is a strength of the Strange Situation?

A
Answer

It is highly systematic and replicable.

Q
Limitation of the Strange Situation?

What is a limitation of the Strange Situation?

A
Answer

It may not fully reflect real-world attachment scenarios.

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🌸 The Strange Situation Quiz

1. Who developed the Strange Situation procedure?

Mary Ainsworth developed the Strange Situation to study infant attachment in the 1970s.

2. What is the primary age range for infants studied in the Strange Situation?

The procedure is designed for infants typically between 12 and 18 months old.

3. Which attachment type is associated with infants who avoid their caregiver upon reunion?

Insecure-avoidant infants tend to avoid or ignore the caregiver after separation.

4. According to van Ijzendoorn’s meta-analysis, which country showed a higher rate of insecure-resistant attachment?

Japan showed higher rates of insecure-resistant attachment, possibly due to cultural norms about proximity and responsiveness.

5. True or False: The Strange Situation procedure reliably reflects attachment behavior across all cultures without bias.

The Strange Situation may be culturally biased, favoring Western norms that value exploration.

📊 Results

  • Notes and Quiz
  • Psychology
  • AS & A Level
  • Attachment
  • AQA