Wanda is conducting a study of social behaviors among children who are considered to be at high risk because one or both of their parents is in prison.Two observers rate the children's social skills,perform an intervention that consists of structured socialization opportunities,and then rate the children's social skills again.Unfortunately,neither of her original observers are available after the intervention,so she has to use two new observers.As a result,Wanda has a(n)____ threat.
A)history
B)mortality
C)instrumentation
D)regression

Question

Quizplus · Accepted Answer

The threat in this scenario is due to instrumentation, which refers to changes in the way a variable is measured over time or by different observers. The use of two new observers after the intervention can introduce measurement bias and threaten the internal validity of the study. This is a common threat in longitudinal studies or studies that involve multiple observers. The other options (history, mortality, and regression) are not applicable in this scenario.

Wanda Is Conducting a Study of Social Behaviors Among Children