Read the following case and answer the question that follows:

Rita worries that she's not very good at her job. Once this idea gets in her head, she starts to notice times when her colleagues seem frustrated or impatient, and she thinks "they must be annoyed with me". One night, when she's feeling particularly down on herself, Rita pores over her work email history and takes note of every time a manager has criticised her work – these comments weigh heavy on Rita's mind. After a big project, Rita's boss says "great work Rita!" but Rita is quick to dismiss this as an empty compliment. After all – as far as she's concerned – all the evidence points in the other direction...

Which cognitive bias is at play in Rita's thinking?