Final answer:
The scenario describes the Pygmalion effect, where a manager's high expectations and positive treatment improve an employee's performance and confidence, leading to professional growth.
Step-by-step explanation:
The concept illustrated by the scenario provided is known as the Pygmalion effect, which is a psychological phenomenon where higher expectations lead to an increase in performance. In this example, the manager's positive expectation and the subsequent treatment of the applicant as highly capable acted as a catalyst for her to gain confidence and improved skills. This change in performance highlights the impact of managerial perception and expectation on employee development and underscores the importance of managerial influence in professional growth and job satisfaction.