He developed the use of twin studies in the assessment of the relative roles of heredity and the environment in the pathogenesis of psychiatric disease.
Franz Liszt | Franz Schubert | Franz Kafka | Franz Joseph I of Austria | Franz Ferdinand | Franz Boas | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Josef Mengele | Josef Albers | Franz Lehár | Franz Josef Land | Franz Werfel | Franz von Papen | Franz Kline | Franz Beckenbauer | Josef Schwarz | Franz Marc | Josef Terboven | Franz Kneisel | Franz Joseph | Josef Locke | Franz Welser-Möst | Franz Rosenzweig | Franz Kugler | Josef Koudelka | Josef Čapek | Franz Xaver Winterhalter | Franz Sigel | Franz Josef Strauss |