Halo effect
Some people believe there are problems with the halo effect. As an example, one study suggests that the halo effect is not found everywhere. The study says that sometimes people think the halo effect is affecting something when it is not. This is known as illusory halo. Another study suggested that the halo effect can affect times where a student has to give a review of a teacher. The students may rate the teacher badly because of things that are unrelated. However, it says that even if the halo effect is there it does not make the review meaningless.