CLPS 0200 Lecture Notes - Lecture 16: Groot, Branching Factor, Tic-Tac-Toe
11 Nov 2016
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Automatization: performance of experts is usually effortless and automatic, no longer engage in search, just go directly to the goal state. Theories of automatization: 1. experts omit may extraneous steps. Novice: if a, then b; if b, then c; if c, then d. Expert: if a, then d: 2. experts possess richer representations of the problem. Ex. chess masters vs. novices: de groot (1995) Masters were not superior at general reasoning. Masters didn"t perform more extensive search (if anything, considered fewer alternatives!) Masters did spend more time considering good moves, while novices spent more time exploring bad moves improved perceptual and memory abilities within domain of expertise: chi, feltovich, and glaser (1981) Task: sort 24 problems into groups based on similarities of solutions (novices vs. experts) Characteristics of expertise: enhanced performance is generally restricted to domain of expertise. Radiologists have better memory for abnormal x- rays, not faces or normal x-rays.
