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Homework answers / question archive / A professor is interested in whether taking online quizzes over a chapter before discussing the chapter in class will improve students' test performance
A professor is interested in whether taking online quizzes over a chapter before discussing the chapter in class will improve students' test performance. The professor is interested in examining the testing effect, the finding that taking a memory test not only asses what one knows, but also enhances later retention. The professor hypothesizes that students who take chapter quizzes will score higher on the midterm exam than students who do not take chapter quizzes.
1. Design and describe an experiment that could test this hypothesis.
2. Identify the IV and DV.
3. Provide an operational definition of each variable.
1. The easiest way to conduct this experiment would be to have one class take the chapter quizzes before an exam and another not take the chapter quizzes before an exam. Each class will be presented with the same material from the same chapters prior to the exam and each class will take the same exam. The class with the higher average scores will prove or disprove the professor's hypothesis. The experiment should likely be repeated to control for the variability of student ability in each class.
2. Taking the online quiz or not is the independent variable (IV). The measured student test performance is the dependent variable (DV).
3. The IV is the variable that the experimenter alters to see if a change occurs in another variable. This other variable is the DV, namely the item that is being measured.