Test Yourself
Take this quiz and see how you do. Select the correct answers by using the drop down menus. Once you are done, click submit to see your score! The ones that you get wrong will have a check!
1. If Treatment Group A scores significantly higher than Treatment Group B, we can conclude that Treatment A has a positive effect.
-- Choose an answer --
a. True
b. False
2. Using a no-treatment control group is always a mistake.
-- Choose an answer --
a. True
b. False
3. Without adequate control groups, an experiment will lack internal validity.
-- Choose an answer --
a. True
b. False
4. If you want to show that the relationship between two variables is linear (a straight line) and not curvilinear, you need only two levels of the treatment.
-- Choose an answer --
a. True
b. False
5. Confounding variables that have nothing to do with the treatment manipulation are a threat to your study's
-- Choose an answer --
a. Construct validity
b. Internal validity
6. The multiple group experiment tends to have better construct validity and/or external validity than the simple experiment.
-- Choose an answer --
a. True
b. False
7. Hypothesis-guessing is a bigger problem when you use
-- Choose an answer --
a. An empty control group
b. A placebo group
8. You may want to include both a placebo group and an empty control group in an experiment.
-- Choose an answer --
a. True
b. False
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