| In the psychological research, because of the limitations of behaviorist's simple restorable method, they can not scientifically analyze the reason why the act emerges from the organism's inner part. Then the emergence of CT makes people begin to analyze the reason of action emergence from the organism's inner part to outer part. William T.Powers absorbs the latest achievements of self-organization and complexity, combines the study of Engineering Control Theory and Theoretical Biology, consturucts a new control method, which is based on the mutually action of system and environment, and which emphasizes the purpose, initiative and dynamic role of the system. He discovers some new roles of human behave, for example, it is not the perception that controls the behave, but on the contrary. Based on it , he builds the level control of perception and behavior, and divides the behavioral control to elven levels: Intensity, Sensation, Configuration, Transtion, Sequence, Relatinships,Program,P rihciple, System Concepts, Events Category. These theories provides a scientific and complete analyze to every levels of behave.Perceptual Control Theory not only makes us have a new understanding to the living complex system, but also contains abundant philosophical thoughts. We now have the new understanding to the living complex system, all the living things are negative feedback control system organized, by order, and all the living thing although the time are the control to some variable to definite purpose, the control mechanism is the essence of life. On.Ontology, Powers provides the new concepts to reference signal and perceptual signal; On Epistemology, he develops a moderate construction theory, which regards our knowledge to the outer things is positively constructed by levels, and the construct have not only transcendence itself, but also the objectivity;on methodology, he well analyzes and uses the model methodology, gives the important illustration to the scientific philosophy. |
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