Marvin, an employee at UniPal Corp., has recently joined the company and is being trained at present. However, he is not able to communicate well with his trainer, Melissa. As a result, Melissa feels that Marvin does not have the positive attitude or the will to work. She speaks to Marvin about the issue, but feels that he is not sincere enough in his statements since she has already formed opinions about him from his past behavior. In this scenario, Melissa’s _____ does not allow her to interpret Marvin’s statements correctly.