PSYC 515 SPSS M3 i i i i i i i i i 1
FACTORIALI DESIGNI SPSSI WORKSHEETI INSTRUCTIONS
OVERVIEW
This worksheet is designed to assess your ability to perform, interpret, report, and graphically present various
factorial designs. These are some of the most sophisticated analyses in our field and require practice and thought
to perform and interpret. These tests can yield conclusions that change the direction in one’s field. Being able to
critically evaluate such results is paramount to maintaining competency in one’s field, and being able to produce
such analyses in a competent manner is a coveted skill in our field.
INSTRUCTIONS
Be sure you have reviewed this module’s assigned readings and presentations before completing this assignment.
This assignment is worth 50 points. Each question is worth 3 content points except where otherwise indicated
(graphs are worth 4 points; results write-ups are 5 pts each- 45 content points total). Five (5) points are assigned
to general formatting. This includes using ensuring the homework is completed and submitted according to the
instructions, SPSS output and images are legible and relevant, and that basic college level writing skills (e.g.,
grammar) are used in the write-ups. Answers should be placed where indicated (e.g., “ANSWER”). Note: all
questions must be attempted to be eligible for full credit of “format” points.
• Please note that for all problems in this course, the standard cut-off (alpha) for a test of significance will be
.05, and you always report the exact power unless SPSS output states p=.000 (you’d report p<.001). Also,
remember that we divide the p-value in half when reporting one-tailed tests with 1 – 2 groups. Also –
remember to check your graphs! You often have to ADD the y – axis title.
• ** remember BS factors are entered into SPSS by having two columns regardless of number of levels. One
column is used to identify the levels (e.g., 0 = male; 1 = female), and a second column for the DV values. In
contrast, when entering a WS factor, you will have the same number of columns as you do levels, so if you
have four levels (e.g., freshman, sophomore, junior, senior), you’d have four columns with the DV values in
each per level. See this week’s corresponding SPSS presentation for visual examples.
• One of the examples in your Practice Worksheet for this week explicitly shows how to perform a factorial
design with two or more WS factors and no BS factors (although you do have the skills to figure it out
without a visual example if you’d like!) i
• Submit the file as a WORD document (.doc or .docx). Make sure the filename of your submission includes
your full name, course and section.
o Example: i SPSS3_JohnDoe_515B01
S 1
Does memory performance differ based on study format (word, picture, and auditory study styles) and/or test
format (in person vs. online)? Students in a class (N = 36) were randomly assigned to one of three study
conditions (studying lists of words, pictures, or by listening to the list), and randomly assigned to one of two
test types (in person or online). This means there were different people in each of the six conditions (n = 6 per
condition): word study / in-person test; word study / online test; picture study / in-person test; picture study /
online test; auditory study / in-person test; auditory study / online test. Data shown below are percent correct
for each of these conditions. Enter it into SPSS to conduct the appropriate analysis and answer the following
questions.
STUDY CONDITION
Word STUDY
Picture STUDY
Auditory STUDY
TEST
TYPE
In-
person
TEST
88
79
68
80
90
92
90
85
50
85
74
74
67
78
54
78
89
79
56
70
92
78
45
71
PSYC 515 SPSS M3 i i i i i i i i i 2
Online
TEST
62
65
88
95
51
89
59
67
87
90
67
93
7
1. How many factors are in this scenario? For each clearly labeled factor, state how many levels it has and
list them. Also label each factor as “BS” or “WS”.
ANSWER
2. Paste all relevant statistical output in the space provided below:
ANSWER
3. Create appropriate graph(s) in SPSS and paste it in the space provided below (note select only the most
relevant but you must have at least one – points will be deducted for additional graphs that are not the
best choice based on the results of the analysis). (4 pts)
ANSWER
4. Present the results using APA format. This includes a full write-up to include a complete statistical
notation as shown in the weekly presentations. The write-up also needs interpretation. If significant,
state how. If it is not significant, what does that mean in layman’s terms? Additional examples of i APA
results sections are also available in the “Helpful Hints” document. (5 pts)
ANSWER
S 2
A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial
expression and/ or gender. Some photos were of males; others were of females, and within each of those
groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the
same photo set. This means each participant judged every condition – male smiling; male neutral; female
smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant:
Smiling pictures
Neutral pictures
Male photos
Female photos
Male photos
Female photos
Participant A
8.7
8.2
8.5
9.0
Participant B
9.1
8.0
9.0
8.5
Participant C
8.3
9.0
8.3
8.4
Participant D
9.5
8.8
9.4
9.2
Participant E
9.0
8.2
8.9
8.8
Participant F
7.7
7.0
7.8
7.5
Participant G
8.6
8.8
8.5
8.0
Participant H
8.5
7.3
8.4
7.7
Participant I
9.1
6.5
9.2
6.5
Participant J
9.2
8.0
9.1
8.1
Participant K
8.2
8.1
8.1
8.3
Participant L
8.0
7.5
7.9
7.9
5. How many factors are in this scenario? For each clearly labeled factor, state how many levels it has and
list them. Also label each factor as “BS” or “WS”.
ANSWER
6. Paste all relevant statistical output in the space provided below:
ANSWER
PSYC 515 SPSS M3 i i i i i i i i i 3
7. Create appropriate graph(s) in SPSS and paste it in the space provided below (note select only the most
relevant but you must have at least one – points will be deducted for additional graphs that are not the
best choice based on the results of the analysis). (4 pts) i HINT ON THIS PARTICULAR SCENARIO:
If you need to create a graph for a significant ME, you will have to average the two columns for each
particular level (e.g., if the ME Gender is significant, you’d want to compute a new variable that
averages the scores for smiling_male and neutral_male, and another new variable for smiling_female
and neutral_female, then you would create the appropriate graph for those two columns). It is highly
recommended you have SPSS calculate these for you to reduce error (see this week’s presentation in
for SPSS – example 2 shows how to create an “averaged” variable).
ANSWER
8. Present the results using APA format. This includes a full write-up to include a complete statistical
notation as shown in the weekly presentations. The write-up also needs interpretation. If significant,
state how. If it is not significant, what does that mean in layman’s terms? Additional examples of i APA
results sections are also available in the “Helpful Hints” document. (5 pts)
ANSWER
S 3
Participants (N=12) in a study were randomly assigned to one of two types of therapy – either talk therapy or
drug therapy (n = 6 per condition). Mood scores were analyzed at two time points for all clients: 4 weeks and
12 weeks into the start of the therapy. Mood scores are presented in the table below, with higher scores
indicating improved / more positive moods. Use the data to answer the questions in this set.
Talk
Drug
4 weeks
12 weeks
4 weeks
12 weeks
P1
7
9
P7
4
7
P2
5
7
P8
5
9
P3
4
5
P9
4
5
P4
6
6
P10
3
6
P5
7
8
P11
2
5
P6
7
7
P12
4
6
9. How many factors are in this scenario? For each clearly labeled factor, state how many levels it has and
list them. Also label each factor as “BS” or “WS”.
ANSWER
10. Paste all relevant statistical output in the space provided below:
ANSWER
11. Create appropriate graph(s) in SPSS and paste it in the space provided below (note select only the most
relevant but you must have at least one – points will be deducted for additional graphs that are not the
best choice based on the results of the analysis). (4 pts)
ANSWER
PSYC 515 SPSS M3 i i i i i i i i i 4
12. Present the results using APA format. This includes a full write-up to include a complete statistical
notation as shown in the weekly presentations. The write-up also needs interpretation. If significant,
state how. If it is not significant, what does that mean in layman’s terms? Additional examples of i APA
results sections are also available in the “Helpful Hints” document. (5 pts)
ANSWER
DONE! S 11:59 .m. (ET) S M 3.
