= Herbert A. Simon
{c}
<Herbert A. Simon> studied <cognition> through explicit models of information processing. His work with <William G. Chase> compared how chess players of different skill recalled positions and copied arrangements. Expert performance depended strongly on meaningful configurations, supporting an account in terms of learned patterns organized by <chunking (psychology)> rather than an unrestricted increase in general short-term storage.<Perception in chess by William G. Chase and Herbert A. Simon>[1973, experiments comparing recall, copying and structured/random positions]{ref}
A familiar arrangement can be encoded as one organized pattern where a novice sees many separate pieces. Destroying those relationships by random placement reduces the usefulness of such knowledge. The contrast makes <expertise> a testable property of representations and experience.
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Herbert_Simon_close-up_(cropped).jpg?width=260]
{title=Portrait of <Herbert A. Simon>}
{description=Rochester Institute of Technology, News and Events, 19 March 1981. Wikimedia Commons identifies the sitter and marks the image public domain in the United States.}
{source=https://commons.wikimedia.org/wiki/File:Herbert_Simon_close-up_(cropped).jpg}
{width=260}
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