Question

A researcher is interested in the effects of level of hunger and level of distraction on the amount of food consumed. Participants (n = 4) were instructed to come to the lab either hungry or full, and were left in the lab with a full bowl of crackers, either completely undistracted, or distracted by a movie playing in the lab. The number of crackers consumed by each participant was recorded at the end of one hour.

Not distracted/hungry: 1 3 1 2
Not distracted/full: 2 0 1 1
Distracted/hungry: 14 13 15 17
Distracted/full: 6 5 6 4

For this assignment, conduct a factorial analysis of variance (ANOVA) for the problem set. For all inferential tests, use a two-tailed test with a 0.05 alpha level.

1. Put the data into an SPSS spreadsheet and name the variable (or variables) appropriately. Copy the spreadsheet into MS Word. *PLEASE NOTE: you can’t really enter the data as it appears in the data files shown. You have to DO SOMETHING to make the data work in the SPSS analysis. You will need ONE column per independent variable, and one column for the dependent variable (SCORES).
2. Run the analysis of variance (including partial eta squared as the measure of effect size, and including the descriptive statistics).*Note: no follow up tests will be required, because we will only be dealing with 2 x 2 designs. Copy the entire output into MS Word.
3. Construct a line graph for the mean scores on the dependent variable by the levels of the independent variables (hint: graphs: legacy dialogs: line graph. MULTIPLE). Copy the line graph into MS Word.
4. Write an APA format factorial ANOVA write up for the problem set in MS Word.

Answer 1

The SPSS output with partial eta squared as the measure of effect size is:

The line graph is: