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Kahneman's Dual-System Theory Paper

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The dual-system theory developed by psychologist Daniel Kahneman explains why the judgments and decisions of agents may not conform to the traditional theory of rationality. The dual-self model describes two methods of cognitive processes at work when individuals make decisions. The dual-self model approach to judgment and choice is described as System 1 and System 2 thinking. System 1 is the intuitive process of decision making. This system is described as fast, automatic, and effortless. System 2 involves the reasoning process of decision making. System 2 is described as a slow, serial, and effortful process (Kahneman, 2003). The System 1 process is automatic and governed by habit and instinct. In addition, System 1 operates with minimal effort and no sense of voluntary control. On the contrary, System 2 thinking is more …show more content…

The major difference between the two systems of thinking is the amount of effort warranted to make a decision. System 1 functions with virtually no effort due to the instinctive nature of System 1, while System 2 requires thought relative to the demand required for effortful mental activity. However, since intuition is applied to judgments that directly reflect impressions and System 2 is involved in all judgments, whether originating in impressions or deliberate reasoning, similarities exist within the two decision making processes (Kahneman, 2003). The importance of the information and the way information is displayed influences the impressions that become accessible by either system. For example, natural assessments such as size, distance, or similarity influence the accessibility of information, both in perception and in judgment (Kahneman, 2003). Natural assessments are processed immediately by System 1. Yet, some operations of accessibility require more effort and time due to experience or skills as characterized by the System 2

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