The HR department wants to ensure that the performance appraisal process is fair. When managers at Hautelook rate their subordinates, they need to be careful not to have their rating of a subordinate on one trait bias the rating of that person on other traits. This rater error is called .

The halo effect

Explanation:

The halo effect is a type of cognitive bias in which our overall impression of a person influences how we feel and think about their character.

The rater error is called the halo effect.

Explanation: The halo effect is a cognitive bias which occurs when person A's initial positive judgment about person B unconsciously influences the perception that person A has about person B as a whole.

An example of this can be seen when a person initially thinks that someone is nice, therefore that person is intelligent.

Another example is the positive bias we have towards celebrities, based on the first impression we have about them.

Therefore, in situation given in the question above, Managers need to be careful in order that they do not rate their subordinates based on one trait only, as this would lead to the error called the Halo Effect.