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. Which of the following is a threat to internal validity in studies that match on pretest scores?
-- Choose an answer --
a. selection by maturation
b. regression
c. mortality
d. all of these are threats to the internal validity of a study that matches baseed
2. In a two-group study, in which participants are matched on a measure that has much random measurement error (had poor reliability), which of the following would be the most serious threat to validity?
-- Choose an answer --
a. history
b. regression
c. testing
d. instrumentation
3. If you do not realize that scores may be affected by random error, you may fail to detect ____ effects.
-- Choose an answer --
a. instrumentation
b. selection by maturation
c. selection
d. regression
4. External validity is to internal validity as _______ is to _______.
-- Choose an answer --
a. rigor; relevance
b. cause; generality
c. generality; cause
d control; measurement
5. Studying participants in a highly controlled lab situation might help
-- Choose an answer --
a. external validity
b. internal validity
c. both a and b
d. neither a nor b
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