Ole Ivar Løvaas PhD (8 May 1927 – 2 August 2010) was a Norwegian-American clinical psychologist and professor at the University of California, Los Angeles (UCLA). He is considered to be one of the fathers of applied behavior analysis (ABA, formerly called Behavior modification) through his development of the Lovaas technique and was the first to provide evidence that the behavior of autistic children can be modified through teaching. In 1999, the U.S.