1. Attachment Disorder Behavior Following Early Severe Deprivation: Extension and Longitudinal Follow-up 
THOMAS G. O'CONNOR, PH.D., MICHAEL RUTTER, M.D. 
Journal of the American Academy of Child & Adolescent Psychiatry 
Volume 39, Issue 6, Pages (June 2000)
DOI: /
Copyright © 2000 The American Academy of Child and Adolescent Psychiatry Terms and Conditions

2. Fig. 1
Cluster analysis of individuals from the 4 attachment disorder items (see text): “definite lack of differentiation between adults,” “clear indication that the child would readily go off with a stranger,” “definite lack of checking back with the parent in anxiety-provoking situations,” “indicates distress but definite lack of seeking comfort.” Cluster 1 (n = 29) means (SD): 0.07 (0.26), 0.14 (0.35), 1.07 (0.53), and 0.45 (0.57) for the 4 items, respectively; cluster 2 (n = 52) means (SD): (0 on each of the 4 items); cluster 3 (n = 22) means (SD): 1.50 (0.51), 1.73 (0.46), 1.64 (0.58), and 0.50 (0.74) for the 4 items, respectively; cluster 4 (n = 38) means (SD): 1.18 (0.46), 0.66 (0.58), 0.37 (0.49), and 0.05 (0.23) for the 4 items, respectively. Significant (p <.05) mean differences between clusters were found on “definite lack of differentiation” (F3,137 = 174; clusters 3 and 4 > 1 and 2), “readily go off with a stranger” (F3,137 = 113; clusters 3 and 4 > 1 and 2), “definite lack of checking back” (F3,137 = 97; clusters 3 > 1 > 4 > 2), and “definite lack of seeking comfort” (F3,137 = 13; clusters 3 and 1 > 4 and 2).
Journal of the American Academy of Child & Adolescent Psychiatry  , DOI: ( / )
Copyright © 2000 The American Academy of Child and Adolescent Psychiatry Terms and Conditions

3. Fig. 2
Severe attachment disorder behaviors as a function of exposure to deprivation (χ23 = 19, p <.001). UK = intracountry adoptees; Rom. = Romanian adoptees.
Journal of the American Academy of Child & Adolescent Psychiatry  , DOI: ( / )
Copyright © 2000 The American Academy of Child and Adolescent Psychiatry Terms and Conditions