Which is NOT a subgroup in the group comparison model?
Casual-comparative
Norm-comparative
Pre-experimental
Quasi-experimental
In the casual-comparative design, "ex post facto" means what?
Never
Before researching
After the fact
While researching
Why should you have a control group in a quasi-experimental design?
Research is invalid if not
Research will not be obtainable
Won't receive data if not
Decreases variables
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