To study the effects of noise on worker productivity,researchers have one group of people work in a noisy room and a second group work in a quiet room.To be sure that any differences in the productivity of the two groups actually result from the different noise levels,the researchers should use
A) the case study.
B) correlational measurement.
C) naturalistic observation.
D) random assignment.

Question

Quizplus · Accepted Answer

Random assignment is the best choice in this scenario. It involves randomly assigning participants to either the noisy or quiet room, which reduces the risk of bias and ensures that any differences in productivity are due to the noise levels and not other factors such as individual differences. The other options (case study, correlational measurement, and naturalistic observation) do not involve randomly assigning participants and therefore would not provide the same level of control over extraneous variables.

To Study the Effects of Noise on Worker Productivity,researchers Have