Atypical EEG Power Correlates With Indiscriminately Friendly Behavior in Internationally Adopted Children

Article (PDF Available)inDevelopmental Psychology 47(2):417-31 · March 2011with36 Reads
DOI: 10.1037/a0021363 · Source: PubMed
While effects of institutional care on behavioral development have been studied extensively, effects on neural systems underlying these socioemotional and attention deficits are only beginning to be examined. The current study assessed electroencephalogram (EEG) power in 18-month-old internationally adopted, postinstitutionalized children (n = 37) and comparison groups of nonadopted children (n = 47) and children internationally adopted from foster care (n = 39). For their age, postinstitutionalized children had an atypical EEG power distribution, with relative power concentrated in lower frequency bands compared with nonadopted children. Both internationally adopted groups had lower absolute alpha power than nonadopted children. EEG power was not related to growth at adoption or to global cognitive ability. Atypical EEG power distribution at 18 months predicted indiscriminate friendliness and poorer inhibitory control at 36 months. Both postinstitutionalized and foster care children were more likely than nonadopted children to exhibit indiscriminate friendliness. Results are consistent with a cortical hypoactivation model of the effects of early deprivation on neural development and provide initial evidence associating this atypical EEG pattern with indiscriminate friendliness. Outcomes observed in the foster care children raise questions about the specificity of institutional rearing as a risk factor and emphasize the need for broader consideration of the effects of early deprivation and disruptions in care.

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Available from: Amanda R Tarullo, Aug 21, 2014
    • "Social interactions are essential for infant development such that infants who experience social deprivation show neural, social, and emotional deficits (Marshall, Reeb, Fox, Nelson, & Zeanah, 2008; Tarullo, Garvin, & Gunnar, 2011 ). However, the neural underpinnings of social engagement during infancy are not well understood. "
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    • "1995 1996 1997 1998 1994 1993 1992 1991 1990 1984 1985 1986 1987 1988 1989 Über alle Teilgruppen hinweg war aber das elterliche Erziehungsengagement für die telte Beziehung zu seiner externen Umwelt; die Vermittlung kann aber durch die Reaktionsweisen der Mutter (und z.B. ihre Stresshormone) abgepuffert oder verstärkt ("moderiert") werden. -Neueste Forschungen besagen sogar, effektives Verhaltensmuster in einer Umgebung mit vielen, aber emotional distanzierten Bezugspersonen sein oder auch (Tarullo 2011). Ziegenhain, U., Rauh, H. & Müller, B. (1998). "
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