A cognitive psychologist is interested in whether the quantity of information that can be held in short-term memory varies depending on the type of information to be learned. She tests 18 participants, where each participant receives either: digits only, letters only, and a mixture of digits and letters. The maximum short-term memory span for each participant under each condition is listed below.
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Create a dataset with the data provided. Make sure to name your variables and set all characteristics appropriately.
PSYC 311
In Class Assignment 8
One-way ANOVA
Part I. To be completed in SPSS.
A cognitive psychologist is interested in whether the quantity of information that can be held in short-term memory varies depending on the type of information to be learned. She tests 18 participants, where each participant receives either: digits only, letters only, and a mixture of digits and letters. The maximum short-term memory span for each participant under each condition is listed below.
Create a dataset with the data provided. Make sure to name your variables and set all characteristics appropriately.
DATA SET
Digits | Letters | Mixed |
6 | 5 | 6 |
8 | 5 | 5 |
9 | 7 | 4 |
8 | 5 | 6 |
6 | 4 | 7 |
7 | 6 | 5 |
Part II. Complete the ANOVA table below using the study description. Answer the questions to determine if there is in fact a significant difference between the three groups.
A psychologist would like to examine the effects of sugar consumption on the activity level of preschool children. Three samples of children are selected with n = 5 in each sample. One group gets no sugar, one group gets a small dose, and the third group gets a large dose. The psychologist records the activity level for each child. The data from this experiment are presented below.
α = .05.
No sugar Small dose Large dose
5 3 6
3 3 8
1 7 5
1 4 2
5 3 4
Source SS df MS F
Between Treatments 10 ___________________
Within Treatments ______________________
Total 58 ________________________
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