Jared was questioning a suspect using the Reid technique, and after a long and exhausting interrogation, the suspect falsely confessed to the crime just to put an end to the interrogation. When hearing this confession, Jared felt even more confident that the suspect was guilty. This is an illustration of the phenomenon that psychologists call.

Confirmation bias

Explanation:

Confirmation bias  is the method through which already-exiting personal believe is confirmed on basis of new evidence and data.This searched information in form of evidence favors and strengthens the belief of the person and thus it is considered appropriate.

According to the question, scenario of the investigation is describing about confirmation bias as due to extreme investigation done by Jared made the suspect falsely agree to the crime.In this way ,Jared got strength on the belief that suspect is the criminal because of the information(confession) he got from suspect.