At the end of a three-year study,Susan finds that 12 percent of her participants did not take part in the final survey because they moved away.In research terms,Susan is experiencing a _____ problem.
A) maturation
B) testing
C) history
D) mortality

Question

Quizplus · Accepted Answer

The problem Susan is experiencing is known as mortality, which refers to the loss of participants during a study due to dropout, death, or other reasons. The fact that 12 percent of her participants did not take part in the final survey because they moved away represents a form of mortality, as those participants are not represented in the final results. Maturation refers to changes that occur naturally over time, testing refers to the potential impact of taking a pre-test on later measures, and history refers to external events that may have influenced the outcome of a study. None of these concepts are directly applicable to Susan's problem.

At the End of a Three-Year Study,Susan Finds That 12