Which of the following researchers outlined threats to internal validity many years ago?
A)Shadish, Cook, and Campbell
B)Campbell and Stanly
C)Stanly and Cook
D)Shadish and Stanly

Question

Quizplus · Accepted Answer

Campbell and Stanly are widely known for their work on experimental and quasi-experimental designs, including identifying threats to internal validity. Shadish later contributed to this area of research with his work on experimental and quasi-experimental design as well.

Which of the Following Researchers Outlined Threats to Internal Validity