Developmental Microgenetic Analysis of Logical Thinking in Children

Late 90s are connected with the birth of a new, complex developmental theory of logical thinking in children. The new theory combines leanings of most known theories of cognitive development: J. Piaget and L. S. Vigotsky. The other source of the new theory is represented through Darwin's concepts of evolutionary development. However, the new theory begins not only with revised concepts but also with a new approach called a microgenesis. Our experience with a microgenesis begun in late nineties when we performed a couple of experiments to discovering the development of logical thinking in six to eight years old children. Results opened some new questions we would like to answer in our coming experiments. In these experiments we would like to asses the variability, path, rate and predictors of the operations that play the essential role in the cognitive development - classification, conservation and class inclusion.