DeFries–Fulker_regression
DeFries–Fulker regression
Method of multiple regression analysis used in behavioural genetics
In behavioural genetics, DeFries–Fulker (DF) regression, also sometimes called DeFries–Fulker extremes analysis, is a type of multiple regression analysis designed for estimating the magnitude of genetic and environmental effects in twin studies.[1] It is named after John C. DeFries and David Fulker, who first proposed it in 1985.[2] It was originally developed to assess heritability of reading disability in twin studies, but it has since been used to assess the heritability of other cognitive traits, and has also been applied to non-twin methodologies.[3][4]