Skip to main content
. 2015 Feb;18(1):32–46. doi: 10.1037/a0038524

Table 1. The Ainsworth Strange Situation Classifications.

Attachment classification Strange-situation behavior
Note.Ainsworth’s (1984) interactive behavioral measures, elaborated in detail in Patterns of Attachment:
(a) proximity-seeking = the intensity, duration, and degree of success of the infant’s attempts to make contact with their caregiver, particularly where this occurs at reunion;
(b) contact-maintaining = the intensity, duration, and degree of success of the infant’s attempts to keep contact with their caregiver once it has been achieved;
(c) proximity-avoiding = the intensity and duration of behaviors that direct attention away from the caregiver as he or she approaches on reunion, such as averting the face;
(d) contact-resisting = the intensity and duration of behaviors that signal anger and a desire to be put down from contact with the caregiver, such as pushing away.
A Lower proximity-seeking and contact-maintaining on reunion than B or C, together with some proximity-avoiding behaviors. The infant’s behavior, attention, and affect are integrated in a coherent way to downplay the communication of distress and keep focus away from the caregiver (e.g. by attention to the toys).
  A1 Lowest proximity-seeking and contact-maintaining on reunion than B or C; strongest proximity-avoiding behaviors.
  A2 Low to moderate proximity-seeking on reunion. Marked proximity-avoiding behaviors.
B Strong proximity-seeking and contact-maintaining on reunion compared with A. Low contact-resisting compared with C. The infant’s behavior, attention, and affect integrate in a coherent way, which allows distress to be communicated to the caregiver and assuaged, allowing the child to then return calmly to play.
  B1 Weak proximity-seeking and contact-maintaining. Weaker proximity-avoiding behaviors than A1. Strong communication and affective sharing with their caregiver from a distance. Conceptualized as intermediate between A and B infants.
  B2 Low to moderate proximity-seeking and marked proximity-avoiding on first reunion. But then strong proximity-seeking and contact-maintaining on second reunion.
  B3 Strong proximity-seeking and contact-maintaining on reunion. No contact-resisting or proximity-avoiding.
  B4 Some proximity-seeking and contact-maintaining prior to separation from the caregiver. Strong proximity-seeking and contact-maintaining on reunion. Some contact-resisting.
C Marked contact-resisting behavior. The infant’s behavior, attention, and affect integrate in a coherent way, which strongly communicates their distress and frustration to the caregiver.
  C1 Strong proximity-seeking and contact-maintaining on reunion. Strong contact-resisting behavior punctuates the contact maintaining, as the child switches between communicating distress and a desire for contact, anger, and a desire to be put down.
  C2 Weak proximity-seeking but moderate to strong contact-maintaining, particularly on second reunion. Moderate contact-resisting.