The Experimental Research On The Development Of Propositional Reasoning

The research was composed of two experiments. The aim was to explore the prepositional reasoning and the influencing factors of children 9-11 years of age, adolescents and adults. The results are as follows:1. There was a significant development of ability from childhood to adulthood. The youngest subjects began to form the abilities of the prepositional reasoning, while the oldest subjects achieved qualitative flight.2. Our finding corroborated the model theory in the propositional reasoning, that is: one-model propositional reasoning was easier than two-model and three-model reasoning. Furthermore, the ability to model reasoning developed as the ages went up.3. The children in the period of material operation could work at some simple deductive reasoning, which was contrary to the claims of Piaget.4. Different formats, genders had an influence on proposition reasoning of the subjects. But the effect of material character was based on the phases; it only affected the subjects in the childhood.