An Estonian psychologist who was President of the Estonian Psychological Association from 1988 to 1994. His main contributions in psychology were in visual perception and eye movement.
He received a Ph.D. from the University of Moscow, and the University of Tampere in Finland.
He is a Foreign Member of the Finnish Academy of Science and Letters and a Member of the Estonian Academy of Sciences.
He was raised in Tallinn, Estonia.
He published a number of works on the theories of Sigmund Freud.