In controlling internal sources of invalidity,true experimental designs control for A) all of the sources of internal invalidity B) all of the sources of internal invalidity except selection bias and test unit mortality C) selection bias, instrumentation, and interactive testing effects only D) selection bias and test unit mortality only

Question

Quizplus · Accepted Answer

One of the primary advantages of true experimental designs is they control for all of the internal sources of invalidity.

In Controlling Internal Sources of Invalidity,true Experimental Designs Control for