FORMAL THINKING In the pedagogical and psychological field is thus defined the act of solving problems and reasoning specific operations in the abstract, without requiring the presence of things. Jean William Fritz Piaget was a Swiss epistemologist and biologist, renowned for his contributions to the study of childhood and for his constructivist theory of the development of intelligence, based on an evolutionary conception in time of the interaction between a subject and objects. He divides formal thinking into hypothetical-deductive thinking and formal logical thinking. It speaks of a formal thought within the cognitive development of a young person who acquires the ability to think systematically about all the logical relationships implicit in a situation that requires solution or decision. In contrast, informal REASONING Informal reasoning is a dynamic reasoning according to context that applies to ill-defined problems. It is intuitive and attempts to overcome the limitations of formal logic based on linguistic, contextual, pragmatic and even epistemic factors to infer, argue, solve or decide a situation or problem.
