Most threats to ____________________ are taken care of by the experiment's design, while most threats to _____________________ need to be taken care of by the designer of the experiment.
A) internal validity, external validity
B) external validity, internal validity
C) randomization, reliability
D) reliability, randomization

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which a study can establish a cause-and-effect relationship between the independent variable and the dependent variable. Most threats to internal validity can be taken care of by the experiment's design, such as controlling for extraneous variables through randomization and using a control group. On the other hand, external validity refers to the extent to which the results of the study can be generalized to other populations, settings, and situations. Most threats to external validity, such as selection bias and lack of representativeness, need to be taken care of by the designer of the experiment, such as by using a random sample or a diverse sample.

Most Threats to ____________________ Are Taken Care of by the Experiment's