Document Detail

Do Non-shared Environmental Influences Persist Over Time? An Examination of Days and Minutes.
MedLine Citation:
PMID:  25262214     Owner:  NLM     Status:  Publisher    
Non-shared environmental influences show only minimal stability over time prior to adulthood. The long assessment lags (typically 3-5 years) that characterize most longitudinal twin studies, however, make it difficult to interpret these results. To more rigorously evaluate non-shared environmental stability prior to adulthood, we fitted biometric correlated factors models to (1) seven consecutive days of self-reported negative and positive affect in 239 twin pairs aged 16-25 years and (2) seven consecutive minutes of observer rated warmth and control in 687 twin pairs aged 6-10 years. We then empirically examined patterns of etiologic stability over time using a mixed effects analog to the one-way ANOVA. Genetic and shared environmental correlations were found to be highly stable over both days and minutes. By contrast, non-shared environmental correlations decreased monotonically with increasing lag length, and moreover, were small-to moderate in magnitude when examining intervals longer than a few minutes. Such findings imply that the non-shared environment may be comprised primarily of transient and idiosyncratic effects prior to adulthood.
S Alexandra Burt; Ashlea M Klahr; Kelly L Klump
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-28
Journal Detail:
Title:  Behavior genetics     Volume:  -     ISSN:  1573-3297     ISO Abbreviation:  Behav. Genet.     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-28     Completed Date:  -     Revised Date:  2014-9-30    
Medline Journal Info:
Nlm Unique ID:  0251711     Medline TA:  Behav Genet     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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