Informal variants of such networks were first used by legal scholar John Henry Wigmore , in the form of Wigmore charts , to analyse trial evidence in 1913 . Another variant , called path diagrams , was developed by the geneticist Sewall Wright and used in social and behavioral sciences ( mostly with linear parametric models ) .
Informal variants of such networks were first used by legal scholar John Henry Wigmore , in the form of Wigmore charts , to analyse trial evidence in 1913 . :66 -76 Another variant , called path diagrams , was developed by the geneticist Sewall Wright and used in social and behavioral sciences ( mostly with linear parametric models ) .