What is an example of Attribution Blas?

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Li Xiu was late to her first moming meeting due to traffic during her commute. After the meeting, her Manager, Zhang, asked questions to find out why she was late.

Every day, Andrew eats lunch with the other male Senior Associates on his team. They always sit together in the break room, and do not invite the other team members.

Maria leaves work early to pick up a sick child from school. Her Manager determines she is not dedicated to her work, even though she finishes her work that evening