Ontology highlight
ABSTRACT:
SUBMITTER: Docherty AR
PROVIDER: S-EPMC4459911 | biostudies-other | 2015 Jul
REPOSITORIES: biostudies-other
Behavior genetics 20150418 4
This study explores power assumptions relating to extended pedigree designs (EPD) and classical twin designs (CTD). We conducted statistical analyses to compare the power of the two designs for examining neuroimaging phenotypes, varying heritability and varying whether shared environmental variance is fixed or free. Results indicated that CTDs have more power to estimate heritability, with the exception of one condition: in EPDs, the power increases relative to CTDs when shared environmental var ...[more]