Medical Diagnosis as a Model of 'System 1- System 2' Decision-Making



Recently, interest has re-emerged into dual-process theories of reasoning. Such theories postulate two systems underlying human reasoning – typically distinguishing an evolutionary old system ('System 1') that is associative, automatic, unconscious, parallel, and fast, and a more recent, distinctively human system ('System 2') that is rule-based, controlled, conscious, serial, and slow. Within this framework, a number of experiments have been carried out into the nature of medical diagnosis. These experiments were conducted to study the conditions under which System 1-style reasoning might be superior to System 2, and vice-versa.

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Dr. G. Liberali