Halo Effect

Halo effect is being under the impression that if a candidate who has applied for a position possesses one of the traits needed for the position, then the interviewers assume that he/she might be possessing the other required traits as well. This is mostly seen to happen during recruitment and selection stage.

Also, at times during performance appraisal, the supervisor might consider this trait to be superior to the others and can tend to be biased to one employee over the possession of a particular trait. This sometimes acts in favor and sometimes against the person as the person may be good or bad at the trait and this might affect the ratings.