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In his response to criticisms Ericsson argues that conclusions about expertise development cannot be drawn from studies in the general population, and that it is possible that, in chess, intelligence and expertise are uniformly related across development. We respond here that if we want to study the development of expertise across the lifespan, research needs to take into account samples from the...
Previous studies have generally found no relation between IQ and chess skill in chess experts. This lack of a relation could be due to the influence of practice being more important than IQ in chess expertise. An alternative explanation is that IQ is relatively high and might therefore be restricted in range in chess experts. The current study investigated the contribution of practice, IQ and motivation...
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