The use of __________ helps to control for the effect of observer bias.
A)blind observers
B)a single trained observer
C)randomly selected observers
D)none of the above

Question

Quizplus · Accepted Answer

Blind observers are individuals who do not know the purpose or expected outcome of a study or experiment, which helps to reduce observer bias. This is because they are less likely to be influenced by their preconceived notions or expectations and more likely to make objective observations. Therefore, the use of blind observers is the best choice for controlling for the effect of observer bias.

The Use of __________ Helps to Control for the Effect