PSYC 515 SPSS M3 1
FACTORIAL D SPSS W IESIGN ORKSHEET NSTRUCTIONS
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 =.000 (you’d report <.001). p p
Also, remember that we divide the -value in half when reporting one-tailed tests with 1 – 2 groups. Also – p
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!)
Submit the file as a WORD document (.doc or .docx). Make sure the filename of your submission includes
your full name, course and section.
oExample: 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
