Jan Smedslund is a Professor Emeritus at University of Oslo, Norway. He began his research career with experimental work on cognitive development. His collaborators include Jean Piaget and Jerome Bruner. During 1967-8, he turned away from experimental work and began working on conceptual and foundational issues in psychology (Smedslund, 1991b). In 1988 he published Psycho-Logic, a later edition of which was published in 1997 as The Structure of Psychological Common-Sense… Read More