PHYSICIAN
Fritz Klein
1932 - 2006

Fritz Klein
Fred "Fritz" Klein (December 27, 1932 – May 24, 2006) was an Austrian-born American psychiatrist and sex researcher who studied bisexuals and their relationships. He was an author and editor, as well as the developer of the Klein Sexual Orientation Grid, a scale that measures an individual's sexual orientation. Klein believed that sexual orientation could change over the course of a lifetime and that researchers underestimated the number of men that had sexual interactions with both sexes. Fritz Klein founded the American Institute of Bisexuality in 1998, which is continuing his work by sponsoring bisexual-inclusive sex research, educating the general public on sexuality, and promoting bisexual culture and community. Read more on Wikipedia
His biography is available in different languages on Wikipedia. Fritz Klein is the 506th most popular physician (up from 709th in 2019), the 731st most popular biography from Austria (up from 1,193rd in 2019) and the 12th most popular Austrian Physician.
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Among PHYSICIANS
Among physicians, Fritz Klein ranks 506 out of 726. Before him are Constantin von Economo, Kurt Blome, Oskar Minkowski, Wu Lien-teh, Madeleine Pelletier, and Ibn Butlan. After him are Carlo Urbani, Ruth Pfau, Kadambini Ganguly, Ernst von Bergmann, Caspar Peucer, and Thomas Francis Wade.
Most Popular Physicians in Wikipedia
Go to all RankingsConstantin von Economo
1876 - 1931
HPI: 58.49
Rank: 500
Kurt Blome
1894 - 1969
HPI: 58.48
Rank: 501
Oskar Minkowski
1858 - 1931
HPI: 58.48
Rank: 502
Wu Lien-teh
1879 - 1960
HPI: 58.43
Rank: 503
Madeleine Pelletier
1874 - 1939
HPI: 58.42
Rank: 504
Ibn Butlan
1001 - 1066
HPI: 58.40
Rank: 505
Fritz Klein
1932 - 2006
HPI: 58.33
Rank: 506
Carlo Urbani
1956 - 2003
HPI: 58.29
Rank: 507
Ruth Pfau
1929 - 2017
HPI: 58.26
Rank: 508
Kadambini Ganguly
1861 - 1923
HPI: 58.24
Rank: 509
Ernst von Bergmann
1836 - 1907
HPI: 58.22
Rank: 510
Caspar Peucer
1525 - 1602
HPI: 58.18
Rank: 511
Thomas Francis Wade
1818 - 1895
HPI: 58.18
Rank: 512
Contemporaries
Among people born in 1932, Fritz Klein ranks 264. Before him are Olga Fikotová, Eileen Brennan, Alfonso Arau, Carlyle Glean, Katherine Paterson, and Hans van Manen. After him are Paulinho de Almeida, Tinka Kurti, Loretta Lynn, Mika Antić, Quentin Blake, and Athol Fugard. Among people deceased in 2006, Fritz Klein ranks 202. Before him are Raúl Francisco Primatesta, Charles E. Brady Jr., Said Mohamed Djohar, Max Merkel, Karl Hugo Strunz, and John Profumo. After him are Elena Mukhina, Gordon George Avery, Anita O'Day, Chris Heunis, Robert Lockwood Jr., and Al Lewis.
Others Born in 1932
Go to all RankingsOlga Fikotová
ATHLETE
1932 - 2024
HPI: 58.60
Rank: 258
Eileen Brennan
ACTOR
1932 - 2013
HPI: 58.54
Rank: 259
Alfonso Arau
ACTOR
1932 - Present
HPI: 58.49
Rank: 260
Carlyle Glean
POLITICIAN
1932 - 2021
HPI: 58.45
Rank: 261
Katherine Paterson
WRITER
1932 - Present
HPI: 58.42
Rank: 262
Hans van Manen
DANCER
1932 - Present
HPI: 58.37
Rank: 263
Fritz Klein
PHYSICIAN
1932 - 2006
HPI: 58.33
Rank: 264
Paulinho de Almeida
SOCCER PLAYER
1932 - 2007
HPI: 58.28
Rank: 265
Tinka Kurti
CELEBRITY
1932 - Present
HPI: 58.28
Rank: 266
Loretta Lynn
SINGER
1932 - 2022
HPI: 58.23
Rank: 267
Mika Antić
WRITER
1932 - 1986
HPI: 58.23
Rank: 268
Quentin Blake
COMIC ARTIST
1932 - Present
HPI: 58.23
Rank: 269
Athol Fugard
WRITER
1932 - 2025
HPI: 58.22
Rank: 270
Others Deceased in 2006
Go to all RankingsRaúl Francisco Primatesta
RELIGIOUS FIGURE
1919 - 2006
HPI: 58.64
Rank: 196
Charles E. Brady Jr.
ASTRONAUT
1951 - 2006
HPI: 58.51
Rank: 197
Said Mohamed Djohar
POLITICIAN
1918 - 2006
HPI: 58.48
Rank: 198
Max Merkel
SOCCER PLAYER
1918 - 2006
HPI: 58.43
Rank: 199
Karl Hugo Strunz
BIOLOGIST
1910 - 2006
HPI: 58.39
Rank: 200
John Profumo
POLITICIAN
1915 - 2006
HPI: 58.33
Rank: 201
Fritz Klein
PHYSICIAN
1932 - 2006
HPI: 58.33
Rank: 202
Elena Mukhina
POLITICIAN
1960 - 2006
HPI: 58.33
Rank: 203
Gordon George Avery
ATHLETE
1925 - 2006
HPI: 58.25
Rank: 204
Anita O'Day
SINGER
1919 - 2006
HPI: 58.23
Rank: 205
Chris Heunis
POLITICIAN
1927 - 2006
HPI: 58.21
Rank: 206
Robert Lockwood Jr.
MUSICIAN
1915 - 2006
HPI: 58.11
Rank: 207
Al Lewis
ACTOR
1923 - 2006
HPI: 58.06
Rank: 208
In Austria
Among people born in Austria, Fritz Klein ranks 731 out of 1,424. Before him are Fritz Heider (1896), Christopher Alexander (1936), Max Merkel (1918), Otto Muehl (1925), Ignaz Schiffermüller (1727), and Robert Dienst (1928). After him are Maria Lassnig (1919), Rudolf von Alt (1812), Friederike Mayröcker (1924), Ignaz von Seyfried (1776), Anton Josef Gruscha (1820), and Victor Papanek (1923).
Others born in Austria
Go to all RankingsFritz Heider
PSYCHOLOGIST
1896 - 1988
HPI: 58.49
Rank: 725
Christopher Alexander
ARCHITECT
1936 - 2022
HPI: 58.44
Rank: 726
Max Merkel
SOCCER PLAYER
1918 - 2006
HPI: 58.43
Rank: 727
Otto Muehl
PAINTER
1925 - 2013
HPI: 58.43
Rank: 728
Ignaz Schiffermüller
BIOLOGIST
1727 - 1806
HPI: 58.39
Rank: 729
Robert Dienst
SOCCER PLAYER
1928 - 2000
HPI: 58.36
Rank: 730
Fritz Klein
PHYSICIAN
1932 - 2006
HPI: 58.33
Rank: 731
Maria Lassnig
PAINTER
1919 - 2014
HPI: 58.32
Rank: 732
Rudolf von Alt
PAINTER
1812 - 1905
HPI: 58.31
Rank: 733
Friederike Mayröcker
WRITER
1924 - 2021
HPI: 58.30
Rank: 734
Ignaz von Seyfried
MUSICIAN
1776 - 1841
HPI: 58.28
Rank: 735
Anton Josef Gruscha
RELIGIOUS FIGURE
1820 - 1911
HPI: 58.27
Rank: 736
Victor Papanek
DESIGNER
1923 - 1998
HPI: 58.26
Rank: 737
Among PHYSICIANS In Austria
Among physicians born in Austria, Fritz Klein ranks 12. Before him are Hans Asperger (1906), Irmfried Eberl (1910), Leopold Auenbrugger (1722), Victor Babeș (1854), Paul Neumann (1875), and Bénédict Morel (1809).
Hans Asperger
1906 - 1980
HPI: 69.61
Rank: 6
Irmfried Eberl
1910 - 1948
HPI: 63.73
Rank: 7
Leopold Auenbrugger
1722 - 1809
HPI: 63.45
Rank: 8
Victor Babeș
1854 - 1926
HPI: 62.44
Rank: 9
Paul Neumann
1875 - 1932
HPI: 62.14
Rank: 10
Bénédict Morel
1809 - 1873
HPI: 59.56
Rank: 11
Fritz Klein
1932 - 2006
HPI: 58.33
Rank: 12