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== Biography ==
== Biography ==
On 17 April 1938, he married Lore Rollig (who secretly converted to Judaism). On 20 May 1943, Became naturalized citizen (Certificate No. On 17 August 1943, he served as instructor, Section V. In 1950, he attended PhD in Clinical Psychology, Columbia University. In 1954, he 5 President, Society of Correctional Psychologists. In 1958, he retired from Army as Lt. William attended college, University of Vienna (Psychology & Law, PhD, LLD). He worked as a practiced law in Vienna. He returned to Vienna to locate and rescue wife. He (handwriting expert and personnel consultant). Perl (September 21, 1906 – December 24, 1998) was a Prague-born American lawyer and psychologist who was the chief interrogator during the Malmedy massacre trial. Perl was born to a textile merchant in Prague on September 21, 1906, in what was then the Austro-Hungarian Empire. He spent much of his youth and early adulthood in Vienna. Perl attended the University of Vienna, where he earned a Ph.D. in law and a master's degree in international business. He joined Ivria, one of several Jewish fraternities, as a student and soon became deeply immersed in the growing Zionist movement. Perl was a chief interrogator during the Malmedy massacre trial, where Col. Joachim Peiper and other members of the Waffen-SS were prosecuted for the murder of American prisoners of war at Malmedy, Belgium in December 1944. Byrne, Morris Ellowitz, Harry Thon and Joseph Kirschbaum, Perl was criticized for alleged torture at the interrogations. Perl continued his study of psychology at Columbia University and then served as an army psychologist until his retirement with the rank of Lt. He died at his home on December 24, 1998.
On 20 May 1943, Became naturalized citizen (Certificate No. William attended college, University of Vienna (Psychology & Law, PhD, LLD). He worked as a practiced law in Vienna. He returned to Vienna to locate and rescue wife. He (handwriting expert and personnel consultant). Perl (September 21, 1906 – December 24, 1998) was a Prague-born American lawyer and psychologist who was the chief interrogator during the Malmedy massacre trial. Perl was born to a textile merchant in Prague on September 21, 1906, in what was then the Austro-Hungarian Empire. He spent much of his youth and early adulthood in Vienna. Perl attended the University of Vienna, where he earned a Ph.D. in law and a master's degree in international business. He joined Ivria, one of several Jewish fraternities, as a student and soon became deeply immersed in the growing Zionist movement. Perl was a chief interrogator during the Malmedy massacre trial, where Col. Joachim Peiper and other members of the Waffen-SS were prosecuted for the murder of American prisoners of war at Malmedy, Belgium in December 1944. Byrne, Morris Ellowitz, Harry Thon and Joseph Kirschbaum, Perl was criticized for alleged torture at the interrogations. Perl continued his study of psychology at Columbia University and then served as an army psychologist until his retirement with the rank of Lt. He died at his home on December 24, 1998.


== Research notes ==
== Research notes ==