The intention of this book is largely focused on the psychological rather than the educational aspects of children's behavior development. It is clear that any evaluation of the educational value of the method used must ultimately depend on the validity of the psychological basis. By thinking of it as a reflection of their minds and observing closer to the level of instinct and spontaneous interests than is usually possible. The actual work with children was of course pedagogical; But the records themselves are direct and impartial observations, recorded in their entirety as closely as possible under the circumstances; Be as free from evaluations and interpretations as possible. It has sometimes been suggested that the child psychologist should conceive of his work as an anthropologist among a primitive people; He watches, but does not enter into the life he observes.