... in 1918 he received a doctorate for his thesis on malacology. In 1919 he went to the Sorbonne in Paris to take classes in psychology, logic, epistemology, and philosophy of science. By 1921 he became the director of research at the Institute Jean-Jacques Rousseau in Geneva. There he published five ... begins to reflect about their experiences. They realize that each object that they encounter has its own characteristics, and assign certain characteristics to a certain object for easy recognition. An example of this is that if a child puts a big red ball into the car, and later can say th...

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