If the two groups involved in an experiment are not equivalent, _____.
A)the experimental result is likely to be affected by ethnocentrism
B)the experiment is said to have high internal validity
C)it is impossible to conduct a replication
D)it cannot be ascertained that the independent variable caused the results

Question

Quizplus · Accepted Answer

If the two groups involved in an experiment are not equivalent, it means they have differences in characteristics that could affect the outcome of the experiment. In this case, it cannot be ascertained that the independent variable caused the results because other factors may have influenced the result as well. This reduces the experiment's internal validity, making it harder to draw reliable conclusions from the study.

If the Two Groups Involved in an Experiment Are Not