Black Box IEEE 1284 Guide de l'utilisateur télécharger pdf (Page 86)

Page 86 of 98 The Black Box Toolkit

Voice Key (plugged into the PST Deluxe Response Box)

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(M=16.13, SD=4.98, Min=11.00, Max=22.00, Var=24.78)

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Error in ms

(M=8.19, SD=0.66, Min=7.00, Max=9.00, Var=0.43)

9.3. Response device summary

The mere act of changing response device can have a huge effect over both display and

response timing in terms of absolute error and variance. In terms of response timing there

is a significant difference between all the devices tested and stresses the importance of

making use of the Black Box Toolkit to determine the contribution it makes to timing.

As one can appreciate it would be quite easy to introduce a conditional bias by making use

of two machines and two different mice! The introduction of faster presentation schedules,

multiple stimulus types and customised response devices increases the usefulness of the

Black Box Toolkit. In the two final graphs we combine the timing performance obtained

from all the devices tested.

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Black Box IEEE 1284 Guide de l'utilisateur Page 86