Sophia is on a four-person project team in her management class. The team produces four reports during the term, and each person leads one of these projects. The project Sophia leads earned an A, while the team receives Cs on the other three reports. Sophia believes that her project was successful because of her leadership abilities, while the other projects were not as good because of the inadequate skills of the other team members. She demonstrates ________ in her beliefs. Multiple Choice negativity bias self-serving bias central tendency halo effect leniency effect