Which one of the following is not a threat to the internal validity of an experiment?
maturation | ||
regression effect | ||
random error | ||
mortality
|
An experiment in which extraneous variables are controlled is said to be
internally reliable | ||
internally valid | ||
externally valid | ||
externally reliable |
Using a convenience sample instead of a random sample of subjects is a threat to which kind of validity?
internal | ||
external | ||
construct | ||
statistical |
Any bias in selecting subjects for an experiment threatens the ____ of the experiment.
internal validity | ||
internal reliability | ||
statistical validity | ||
statistical reliability |