Black Box IEEE 1284 Guia do Utilizador descarregar pdf (Página 83)

The Black Box Toolkit Page 83 of 98

9.2. The effect of changing response device

By repeatedly following the procedure outlined previously the effect of substituting various

response devices on presentation and response timing can easily be evaluated. All

aspects of the paradigm remain unchanged bar that a new response device is physically

plugged into the remote PC and where required, E-Prime is instructed to accept responses

from the new device. In order to illustrate the effects of various response devices can have

on timing a representative range have been tested and are summarised in the following

series of graphs.

Trust AMI wheel mouse

Bitmap Duration Error (AMI Mouse)

0.00

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

12345678910111213141516

Trial No

Error in ms

(M=22.06, SD=2.43, Min=21.00, Max=31.00, Var=5.93)

Response Time Error (AMI Mouse)