How can a researcher be sure that threats to internal validity are being ruled out in the design?
A) sorting out what threats are applicable in which settings
B) comparing the results of several post-tests
C) random selection will rule out, or greatly reduce the chances for statistical regression
D) all the above

Question

Quizplus · Accepted Answer

Each of the options provided contributes to ruling out threats to internal validity in research design. Sorting out applicable threats helps in identifying what needs to be addressed, comparing post-test results can highlight inconsistencies or validate findings, and random selection minimizes biases and the impact of outliers, thereby reducing the chances for statistical regression and other threats.

How Can a Researcher Be Sure That Threats to Internal