Simplify the following text for a Grade 11 native English-speaking person.
Original: Vahakn N. Dadrian ( ; born May 26 , 1926 in Constantinople ) , currently the director of Genocide Research at Zoryan Institute , is a professor of sociology , and an internationally-renowned expert on the Armenian genocide .
Simplified: Professor Vahakn N. Dadrian , currently the director of Genocide Research at Zoryan Institute , is researcher and historian of the Armenian Genocide .