The main difference between internal validity and external validity is that
A)external validity concerns the degree to which the experiment supports clear causal conclusions, while internal validity concerns the generalizability of the results
B)internal validity concerns the degree to which an experiment supports clear causal conclusions, while external validity concerns the generalizability of the results
C)internal validity is based on independent variables, while external validity is based on dependent variables
D)internal validity is based on dependent variables, while external validity is based on independent variables

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which a study can establish a cause-and-effect relationship between variables, ensuring that the changes in the dependent variable are indeed due to the manipulation of the independent variable. External validity, on the other hand, pertains to the extent to which the findings of a study can be generalized to other settings, populations, and time periods.

The Main Difference Between Internal Validity and External Validity Is