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A two-state model of simple reaction time

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Assumption 4 was introduced to account for the effect <strong>of</strong><br />

the preceding FP.<br />

Assumption 4.<br />

TO:::: f(T B , w B ' T pr ' w pr )<br />

where Tpr is the FP in the preceding trial and T B<br />

is determined by the background context. w and<br />

pr<br />

w B are weights for Tpr and T B • That is, TO depends<br />

on gloval (T B ) and local (Tpr) contexts. TO is<br />

defined as one <strong>of</strong> parameters <strong>of</strong> D(x) , that is, D(x)<br />

should be written as D(x,T O ).<br />

It seems evident that a subject cannot maintain his<br />

preparedness indefinitely.<br />

Assumption 5.<br />

After entering into Sp, the subject remains<br />

in it for a while. The distribution function <strong>of</strong><br />

this distribution is R(x).<br />

Now, because the <strong>model</strong> proposed here is a qualitative<br />

approximation, let us make the functions, D(x), R(x) and

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