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The half-second delay: what follows?

By Dylan Wiliam

Abstract

There is an increasing body of evidence that only a minuscule proportion of the sensory data processed by the unconscious mind (capable of processing approximately 11 million bits per second) is referred to the conscious mind (capable of processing approximately 50 bits per second). It is also clear that conscious awareness of stimuli from the environment lags actual perception by approximately half a second, but that a backward referral of subjective experience results in a individual’s perception of the stimulus and its conscious awareness as simultaneous. These findings challenge the primacy and supremacy of conscious processing of information on which a substantial proportion of educational practice and policy is based, and suggest a re-evaluation of the nature of teacher competence and expertise

Year: 2006
OAI identifier: oai:eprints.ioe.ac.uk.oai2:1129

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