HAZEN, Nancy, Sydnye ALLEN, Caroline CHRISTOPHER, Tomotaka UMEMURA and Deborah JACOBVITZ. Very extensive nonmaternal care predicts mother–infant attachment disorganization: Convergent evidence from two samples. Development and Psychopathology. 2015, vol. 27, No 3, p. 649-661. ISSN 0954-5794. doi:10.1017/S0954579414000893.
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Basic information
Original name Very extensive nonmaternal care predicts mother–infant attachment disorganization: Convergent evidence from two samples
Authors HAZEN, Nancy (840 United States of America, guarantor), Sydnye ALLEN (840 United States of America), Caroline CHRISTOPHER (840 United States of America), Tomotaka UMEMURA (392 Japan, belonging to the institution) and Deborah JACOBVITZ (840 United States of America).
Edition Development and Psychopathology, 2015, 0954-5794.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 50100 5.1 Psychology and cognitive sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 3.646
RIV identification code RIV/00216224:14230/15:00082207
Organization unit Faculty of Social Studies
Doi http://dx.doi.org/10.1017/S0954579414000893
UT WoS 000358220300001
Keywords in English attachment; disorganized attachment; frightening/frightened maternal behavior; nonmaternal care
Tags International impact, Reviewed
Changed by Changed by: Ing. Alena Raisová, učo 36962. Changed: 27. 4. 2016 09:12.
We examined whether a maximum threshold of time spent in nonmaternal care exists, beyond which infants have an increased risk of forming a disorganized infant-mother attachment. The hours per week infants spent in nonmaternal care at 7-8 months were examined as a continuous measure and as a dichotomous threshold (over 40, 50 and 60 hours/week) to predict infant disorganization at 12-15 months. Two different samples (Austin and NICHD) were used to replicate findings and control for critical covariates: mothers’ unresolved status and frightening behavior (assessed in the Austin sample, N=125), quality of nonmaternal caregiving (assessed in the NICHD sample, N=1,135), and family income and infant temperament (assessed in both samples). Only very extensive hours of nonmaternal care (over 60 hours/week) and mothers’ frightening behavior independently predicted attachment disorganization. A polynomial logistic regression performed on the larger NICHD sample indicated that the risk of disorganized attachment exponentially increased after exceeding 60 hours/week. Also, very extensive hours of nonmaternal care only predicted attachment disorganization after age 6 months (not prior). Findings suggest that during a sensitive period of attachment formation, infants who spend over 60 hours/week in nonmaternal care may be at an increased risk of forming a disorganized attachment.
EE2.3.30.0037, research and development projectName: Zaměstnáním nejlepších mladých vědců k rozvoji mezinárodní spolupráce
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