Answer:
Self-serving bias
Step-by-step explanation:
In social psychology, self-serving bias is determined as one of the different types of cognitive biases that are being studied on a wide range. It is defined as a person's proclivity to attribute different positive events to his or her personal character yet attributes distinct negative events to a few external factors.
In other words, if anything good happens, a person believes its because of him or her efforts whereas if anything bad or unfortunate occurs then or she believes it because of any other reason or environmental factors.
As per the question, Jane is guilty of the self-serving bias.