3. A cognitive psychologist is trying to study the effects of specific types of

Question

3. A cognitive psychologist is trying to study the effects of specific types of educational television on the reading abilities of children. The psychologist finds pairs of children entering 1" grade who are matched on their reading ability. The psychologist then randomly assigns one member of each pair to watch a television program with cartoons singing songs about spelling one hour each day for five days and the other member of each pair to watch a television program with cartoons talking about spelling one hour each day for five days. At the end of the program all the echildren in the study are given a reading exam scored from 0-30 with higher scores indicating better ability. The data are: Talking Singing 15 13 25 24. 10 15 12 What is the independent variable and the dependent variable? Do the data suggest a significant(a- difference in reading ability based on which type of cartoon they watched? If so, what is the effect size () and what does r ' tell you about the differences in reading ability related to cartoon type? CH 11 Practice Pg. 2

Explanation / Answer

Talking and singing abilities are independent variable and both together are dependent variable. No the data does not show a change of 0.5 difference in reading ability based on what type of cartoon they watched. r *r relates to variance of variable about the differences in reading abilities related to cartoon type

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