If Cathy blames her history teacher for her poor performance on a history test she is most likely engaging in what?

If Cathy blames her history teacher for her poor performance on a history test she is most likely engaging in: Self serving bias

Self serving bias refers to a way of thinking that always perceive ourself in a positive manner. People with self-serving bias often willing to over look their own mistakes in order to avoid the feeling of failure, which cause them to constantly blame other people for their own mistake.