Amanda Winter worked as a public engagement coordinator at Safe Food Alliance until three months ago when her manager, Laura Morris, promoted her to the position of a sustainable food campaigner. However, soon after this, Laura noticed that Amanda was facing major difficulties in achieving campaign milestones and the project was falling behind schedule due to her lack of performance.

a) Applying ONE (1) common shortcuts in judging others to explain Laura's action to promote Amanda.

b) Provide TWO (2) impacts of Laura's behaviors towards her subordinates. Support your answer with relevant example.