1. If two groups in a nonequivalent group design that are implemented simultaneously show significantly different...
1. If two groups in a nonequivalent group design that are implemented simultaneously show significantly different rate of missing responses for post-test, it is most likely that this study design suffers from ________________________.
a- selection-statistical regression threat to internal validity.
b- selection-history threat to internal validity.
c- selection - mortality threat to internal validity.
d- selection-maturity threat to internal validity.
Homework Answers
The correct answer is Option C. It is most likely that this study design suffers from selection-mortality threat to internal validity.
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1. If two groups in a nonequivalent group design that are
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1. The pretest-posttest nonequivalent control group design is also very commonly used in psychology. Which of the following is NOT a benefit of using this design when random assignment is not possible...
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b. one group
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b. constancy
c. a counfounding variable
d. a selection threat
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what is the design of renees study?
a. posttest only
b. one group
c. pretest posttest
d. within groups
what is the main threat to internal validity?
a. order effects
b. constancy
c. a counfounding variable
d. a selection threat
how could renee redesign her study to prevent the threat to
internal validity from the previous question?
a. counterbalance the order
b. use elimination
c. use constancy
d. use random assignment
Renee (a 24-year-old Master's student) was studying attitudes toward...
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