ABSTRACT
I n t h i s short chapter I am concerned to do two things. One is to bring in the views on thinking of a sophisticated writer in the tradition of methodological behaviourism, Professor Osgood. The second is to try to say something of the contrast between those who wish to explain thinking and problem-solving assuming only discrimination, and some kind of condition ing, and those, such as Kohler, who invoke some form of ‘insight5.
