Information Technology Reference
In-Depth Information
12.16 COMMUNICATING THE RESULTS
Six single heads of households participated in this within-subjects design.
Individuals laundered their clothes by using aqua or orange boxes containing
white, light green, or light blue powder that either did or did not contain
granules. These heads of households evaluated the degree to which they were
satisfied with each detergent after each load of laundry. All effects met the
assumption of sphericity as tested by Mauchly's procedure.
All effects were statistically significant except for the main effect of box
color. The summary tables are shown in Table 12.1. The three-way interac-
tion was statistically significant,
F
(2, 10)
=
.
<.
η
2
=
.
03. The bar
graph depicting the three-way interaction is presented in Figure 12.2. Very
generally, participants seemed to prefer two different combinations of the
product: (a) white powder with granules packaged in an aqua box and (b)
blue powder without granules packaged in an orange box.
9
39,
p
05,
CHAPTER 12 EXERCISES
12.1.
In this experiment, participants were presented with words or non-
words on a computer screen. The dependent measure was reaction time
in milliseconds. The design was a 2
7 partici-
pants received all treatment combinations. Factor
A
was the stimulus type
(
a
1
×
2
×
2factorialwhere
n
=
=
word and
a
2
=
nonword). Factor
B
was stimulus length (
b
1
=
4letters
and
b
2
=
8letters).Factor
C
was orthographic style (
c
1
=
lowercase and
c
2
=
uppercase). The data are as follows:
c
1
c
2
Subject
a
1
b
1
a
1
b
2
a
2
b
1
a
2
b
2
a
1
b
1
a
1
b
2
a
2
b
1
a
2
b
2
1
1,018
1,050
1,144
1,210
1,009
1,030
1,127
1,130
2
1,100
1,140
1,149
1,220
1,040
1,070
1,140
1,145
3
1,050
1,140
1,160
1,240
1,030
1,080
1,150
1,145
4
1,040
1,090
1,170
1,250
1,044
1,085
1,160
1,166
5
1,009
1,050
1,165
1,265
1,050
1,090
1,175
1,170
6
1,027
1,070
1,170
1,245
1,055
1,095
1,160
1,155
7
1,030
1,080
1,175
1,250
1,040
1,085
1,165
1,160
a. Conduct an ANOVA using SPSS or SAS.
b. If the interaction(s) is(are) statistically significant, conduct simple
effects analyses with SPSS or SAS.
12.2.
In this study of iconic visual processing, participants are shown car-
toons depicting problematic situations. The dependent measure is compre-
hension time in milliseconds. The design was a 2
×
2
×
3 factorial, where
n
5 participants received all treatment combinations. Factor
A
was pre-
sentation length (
a
1
=
500 ms and
a
2
=
1,000 ms). Factor
B
was stimulus
=
