Psychologist, Institute of Industrial Supervision 1950-58, docent in social psychology, Helsinki University, 1957-64, professor l964-86, prof. emeritus 1986-; professor in psychology, University of Tampere, 1963-64. - Main themes in scientific study: mathematical analysis of social interaction; stochastic theory of cognition and behaviour; discrete process modelling for quantum and mind systems. (See the scientific books!)
Member of Finnish Parliament, 1972-79, vice chairman of Constitutional Party, 1977-82.
Fulbright grantee, 1955-56
Author of textbooks, monographs, collections of poems, of political articles, memories.