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A two-state model of simple reaction time

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- 54 -<br />

RESULTS<br />

Total <strong>time</strong>s <strong>of</strong> experiment III were between 27 and 54<br />

minutes. The data from blocks 2 through 7 were used, although<br />

the first 3 RTs and RTs for immediate FPs <strong>of</strong> 1.30 and 2.19 sec<br />

were discarded. Blocks 2 and 3 (blocks 4 and 5, blocks 6 and 7,<br />

respectively) were pooled as session 1 (session 2, session 3,<br />

respectively). The medians <strong>of</strong> RTs to 1.00, 1.69 and 2.84 sec<br />

FPs, which were classified according to the FPs in the preceding<br />

trials, were calculated. To calculate mean RTs for each<br />

combination <strong>of</strong> the immediate FPs and the preceding FPs <strong>of</strong><br />

individual subjects, these medians were averaged over the three<br />

sessions. These mean RTs were analyzed by ANOVA with the design,<br />

immediate FP(1.00, 1.69 and 2.84 sec) x preceding FP(1.00, 1.30,<br />

1.69, 2.19 and 2.84 sec). Main effect <strong>of</strong> immediate FP and the<br />

interaction effect <strong>of</strong> immediate FP x preceding FP were significant<br />

at 5 % level. This results indicates that mean RT is dependent<br />

on immediate FP and the preceding FP (Figure 5).

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