Cognitive psychologists

Cognitive psychologists are examining the effect of visuospatial cueing on
perceptual processing speed. They designed an experiment in which a square randomly
appeared on either the left or right side of a computer monitor and participants were
required to push a button as soon as they detected the square. Each participant repeated
this action hundreds of times. On half of the trials, a quick flash of light preceded the
appearance of the square and it always appeared on the same side of the computer monitor
as the square (Cued condition). On the other half of the trials, no such flash occurred
(Control condition). The researchers measured the average time it took participants to
detect the square on trials in both the Cued and Control conditions (see Table 4 below).
What can the researchers conclude about the effect of visuospatial cueing on perceptual
processing speed? Show all relevant descriptive statistics.
Table 4. Mean subject reaction times (milliseconds) in the Cued and Control conditions.
Condition
Subject Cued Control
1 204 218
2 200 225
3 212 221
4 191 195
5 210 203
6 207 210
7 204 220
8 223 226
9 193 207
10 181 219