Psych 241 – Methods
Lab section 03
TuTh – 4:00-5:15
Survey Project – Data Entry
Please indicate your gender:
Male ____ Female ____ Other ____
(Gender: Male = 1, Female = 2, Other = 3)
How many semesters have you been on the UMass Amherst campus for?
1-2 _____ 3-6 _____ 7 or more _____
(Semesters: 1-2 = 1, 3-6 = 2, 7 or more = 3)
Are you a smoker?
Yes ____ No ____
(Smoker: No = 0,Yes = 1)
If you smoke, how many years have you been smoking for?
Less than 2 years ____ 2-5 years ____ 5 or more years ____ (SmokeTime: No answer = 0, Less than 2 = 1, 2-5 = 3, 5 or more = 4)
When you were growing up, did you have a smoker in your household?
Yes ____ No ____
(Household: No = 0, Yes = 1)
When you were growing up, did you have close relatives who were smokers?
Yes ____ No ____
(Relatives: No = 0, Yes = 1)
Have you or anyone in your family suffered any detrimental effects of smoking?
Yes ____ No ____
(Detriment: No = 0, Yes = 1)
Do you have friends who smoke?
Yes ____ No ____
(Friends: No = 0,Yes = 1)
Do you live an urban or rural area?
Urban ____ Rural ____
(Area: Urban = 1, Rural = 2)
Please select the option that best corresponds with your average stress level.
None ____ Low ____ Moderate ____ High ____
(Stress: None = 0, Low = 1, Moderate = 2, High = 3)
Survey project: Questions
 Data collection.
 Hypotheses.
Data Analysis for the survey project
 Reverse-coded items.
 reverse score=[(Highest score +1)-actual score
 Example: “It is perfectly moral to add pineapple to pizza.”
Response = 6. Reverse code?
 Reliability analysis.
 Demographics outcomes.
 Hypothesis testing: ANOVA
ANOVA
Source
Type III
Sum
of Squares
df
MS
F
Sig.
Sex
Presentation
Sex*Presentation
456.411
678.034
378.623
1
1
1
456.411
678.034
378.623
4.54
6.74
3.76
.0211
.0164
.0399
Error
3620.143
36
100.559
Total
16612.712
39
20.414
ANOVA
 Give the statistical information for the main effect of “sex” (F ratio, df, p-








value):
Is there a significant main effect of “sex”? Yes No
Give the statistical information for the main effect of “presentation” (F
ratio, df, p-value):
Is there a significant main effect of “presentation”? Yes No
Give the statistical information for the interaction of “sex” and
“presentation” (F ratio, df, p-value):
Is there a significant interaction of “sex” and “presentation? Yes No
Given the information in the table above, how many levels of presentation
were there?
How many levels of “sex” were there?
Given the information in the table above, what design was used in this
study?
1-way between subject
1-way repeated measures
2-way between subject
2-way mixed
ANOVA
SOURCE
Gender
SS
64.445
df
1
MS
64.445
F-ratio Sig.
3.08
.1833
Motivation
456.411
2
229.705 10.97
.0322
Gender*
Motivation
342.572
2
171.286 8.18
.0434
Error
502.72
24 20.947
Total
1366.143
29 47.108
Motivation Mean Std.
Error
Nothing
7.5
5.2440
Music
12
1.5402
Video
15
5.6027
Gender
Men
Women
Mean Std.
Error
17.5 1.4894
17
2.2111
ANOVA
Gender
Motivation
Men
Women
Mean
Std. Error
Nothing 5
Music
12
Video
18
5.2536
1.6949
3.6515
Nothing 10
Music
12
Video
12
1.7889
1.2060
3.5805
ANOVA
 Give the statistical information for the main effect of “gender” (use
APA style):
 If the effect is statistically significant, describe the main effect of
“gender” based on the means:
 Give the statistical information for the main effect of “motivation”:
 If the effect is statistically significant, describe the main effect of
“motivation” based on the means:
 Give the statistical information for the interaction of “gender” and
“motivation”:
Homework.
 Enter the data and send it to me via email. Please attach it as
a document, because I don’t like GoogleDrive. 
 Complete items f, and g from the CS page 108 (based on
page 107)
Contact Information
 ladelman@psych.umass.edu
 Tobin 626
 Office hour: Tuesdays from 1-2pm