Through evolution, humans have acquired 'higher' cognitive skills — such as language, reasoning and planning — and complex social behaviour. Evidence from neuropsychological and neuroimaging research indicates that the prefrontal cortex (PFC) underlies much of this higher cognition. A number of theories have been proposed for how the PFC might achieve this. Although many of these theories focus on the types of 'process' that the PFC carries out, we argue for the validity of a representational approach to understanding PFC function.
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