title: Finnish Twin Research in the 1930s: Contributions of Arvo Lehtovaara and His Mentor, Eino Kaila.
abstract: We offer a brief sketch of an overlooked early twin researcher, Arvo Johannes Lehtovaara (1905-1985), Professor of Psychology at the University of Jyväskylä, 1939-1952, and the University of Helsinki, 1952-1970, with background notes on his mentor, Eino Kaila.
authors.affiliation: Department of Psychology,University of Jyväskylä,Jyväskylä,Finland.
authors.forename: Lea
authors.initials: L
authors.lastname: Pulkkinen
authors.affiliation: Department of Public Health,University of Helsinki,Helsinki,Finland.
authors.forename: Antti
authors.initials: A
authors.lastname: Latvala
authors.affiliation: Department of Psychological & Brain Sciences,Indiana University,Bloomington,Indiana,USA.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Rose
mesh_terms: D005387:Finland; D049673:History, 20th Century; D006801:Humans; D012106:Research / Q000266:history*; D014427:Twins / Q000235:genetics* / Q000266:history