Since ancient times, the age of six or seven has been regarded as the age of reason. The reason referred to by the ancients, however, was the reasoning of Aristotle, syllogistic reasoning. This reasoning took the following classic form:
All men are mortal [major premise].
Socrates is a man [minor premise].
Therefore! Socrates is mortal [conclusion].
Indeed, this is the reasoning that school children acquire and that largely replaces transductive reasoning. As we shall see, however, another still higher level of reasoning emerges in adolescence.
Piaget called the Aristotelian mode of reasoning concrete operations. He argued that these operations form an interconnected group much like the operations of arithmetic. Addition, for example, can be reversed by the operation of subtraction, and multiplication can be reversed by the operation of division. From this perspective, once the child has concrete operations, we can predict from his performance on one task how he will be able to perform on others.
Concrete operations enable the child to do a number of things that he was unable to do at a younger age. First, he can now follow rules and play games with rules. Moreover, because much of formal education involves the inculcation of rules, he is able to profit from such instruction. Second, he is now able to grasp units, whether these be in reading, math, science, or social studies. The unit concept presupposes the understanding that a single object can possess two properties or relationships at the same time. Third, the child is able to nest classes and relationships.
With respect to rules, consider first children's new ability to play games. In a simple board game such as Candy Mountain, the basic rule is: "Move your token as many spaces as the spinner says" (major premise). The child flicks the spinner with his finger. "The spinner says three" (minor premise). "I move my token three places" (conclusion). Young children who cannot yet engage in such reasoning are not really able to play simple board games. To be sure, they play according to a rule, but it is the rule, "I win, you lose!" Not surprisingly, older children complain that when younger children play the game, they "cheat."
© ______ 1994, Merrill, an imprint of Pearson Education Inc. Used by permission. All rights reserved. The reproduction, duplication, or distribution of this material by any means including but not limited to email and blogs is strictly prohibited without the explicit permission of the publisher.
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