User`s guide

E-Prime User’s Guide
Appendix A: Timing Test Results
Page A-17
ACTUAL MOUSE RESPONSE DELAY BY VARYING INTERVAL (SINGLE FRAME)
Varying Interval (ms)
+ 1 PRIMES Grand Total
Average of ACTUAL DELAY
96.006 98.002 96.405
StdDev of ACTUAL DELAY
7.360 5.816 7.102
Min of ACTUAL DELAY
83.805 83.809 83.805
Max of ACTUAL DELAY
107.814 105.813 107.814
N (Num of Intervals)
100 25 125
ACTUAL MOUSE RESPONSE DELAY BY FIXED INTERVAL (MULTI FRAME)
Fixed Interval (ms)
1 100 Grand Total
Average of ACTUAL DELAY
92.389 93.528 92.959
StdDev of ACTUAL DELAY
8.704 5.495 7.299
Min of ACTUAL DELAY
82.805 83.805 82.805
Max of ACTUAL DELAY
108.808 108.812 108.812
N (Num of Intervals)
1000 1000 2000
ACTUAL MOUSE RESPONSE DELAY BY VARYING INTERVAL (MULTI FRAME)
Varying Interval (ms)
+1 PRIMES Grand Total
Average of ACTUAL DELAY
96.616 97.156 96.724
StdDev of ACTUAL DELAY
7.010 6.697 6.925
Min of ACTUAL DELAY
83.804 85.628 83.804
Max of ACTUAL DELAY
108.811 105.816 108.811
N (Num of Intervals)
100 25 125
3c. PST Serial Response Box Test – This test creates a simulated subject response on the
PST Serial Response Box device. The TS computer plays the role of a subject as well as that of
a recording device. The TS computer monitors the display with a photo-diode sensor connected
to the Serial Response Box. When the photo-diode detects a stimulus, a simulated response is
made on the Serial Response Box, as if the subject had pressed a key. The sample data below
shows that PST Serial Response Box device can produce much more accurate response times
relative to a standard keyboard or mouse device (e.g., a delay averaging about 1.25ms with a
standard deviation of <0.75ms). Note that the negative response time shown as a minimum is
possible with the Serial Response Box since the software attempts to subtract out the average
data transmission delay, and as such, a very small negative response time is possible. If buffer
flushing is enabled in E-Prime (the default on all devices), these negative responses would be
filtered out of the data stream as an anticipatory reaction.
ACTUAL SRBOX DELAY FIXED INTERVAL
1ms
Average of ACTUAL DELAY
1.252
StdDev of ACTUAL DELAY
0.743
Min of ACTUAL DELAY
-1.165
Max of ACTUAL DELAY
2.835
N (Num of Intervals)
1000