Observer bias in which observers follow an initial tendency to rate certain objects or persons and use this rating for all subsequent ratings is known as:
A) Hawthorne effect
B) placebo effect
C) halo effect
D) reactivity

Question

Quizplus · Accepted Answer

The halo effect is when an initial rating or impression of a person or object influences all subsequent ratings or judgments. This bias can occur even if the subsequent ratings are not related to the initial rating. The Hawthorne effect is when people change their behavior due to being observed or studied. The placebo effect is when a person's belief in a treatment or intervention leads to a positive outcome, even if the treatment is not actually effective. Reactivity is when people alter their behavior or responses because they are being studied or observed.

Observer Bias in Which Observers Follow an Initial Tendency to Rate