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A two-state model of simple reaction time

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- 79 -<br />

constant variance <strong>model</strong>s and Weber's law.<br />

Reviewed in section E, <strong>time</strong> perception is also affected by<br />

nontemporal factors. Poppel(1978) insisted that intervals<br />

longer than 2 sec are perceived in a way qualitatively different<br />

from shorter ones.<br />

With all these varieties <strong>of</strong> theories <strong>of</strong> <strong>time</strong> perception<br />

in mind, we cannot adopt the specific <strong>model</strong> <strong>of</strong> <strong>time</strong> perception,<br />

on which a <strong>model</strong> <strong>of</strong> <strong>simple</strong> <strong>reaction</strong> <strong>time</strong> would be based.<br />

Foreperiods in a <strong>simple</strong> <strong>reaction</strong> task may include both shorter<br />

and longer than 2 sec intervals.

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