A school psychologist wants to test the effectiveness of a new method for teaching reading. She takes 500 first grade students from District 12 (all with the same teacher), and randomly assigns half of them to the traditional method and half of them to the new method for teaching reading. The students are not told which teaching method they are being taught with. At the end of the year, she obtains all scores on a reading achievement test, and looks for any differences between the two groups. a. What is the research objective? b. What type of study was used? Give the exact name. c. Does this study make use of random sampling, random assignment, both, or neither? How do you know? d. What are the explanatory and response variables? Explanatory Variable: Response Variable: e. What are the treatments? e. Was blinding used? If so, how?
. A school psychologist wants to test the effectiveness of a new method for teaching reading.
She takes 500 first grade students from District 12 (all with the same teacher), and randomly
assigns half of them to the traditional method and half of them to the new method for
teaching reading. The students are not told which teaching method they are being taught
with. At the end of the year, she obtains all scores on a reading achievement test, and looks
for any differences between the two groups.
a. What is the research objective?
b. What type of study was used? Give the exact name.
c. Does this study make use of random sampling, random assignment, both, or neither? How do you know?
d. What are the explanatory and response variables?
Explanatory Variable:
Response Variable:
e. What are the treatments?
e. Was blinding used? If so, how?
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