A Psychologist Wants to Know If Eating a Large Breakfast

question 58

Multiple Choice

A psychologist wants to know if eating a large breakfast improves IQ test scores in a sample of thirty 10-year-olds.The psychologist divides the subjects into three groups of ten and has one group eat a small breakfast,one group eat a medium-sized breakfast,and one group eat a large breakfast.In this study,the independent variable is:

• A) the IQ test
• B) the scores on the IQ test
• C) the size of the breakfast
• D) the number of subjects in each group

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