The Manager of the social worker team starts each day with a 10-minute meeting to identify each person's goals of the day. At the each of person's review, the manager asks, "How can I help you accomplish those goals?" The manager offers realistic praise for completed work and accomplishments. Throughout the week, the manager stops by each employee's office to quickly talk. The manager is genuinely interested in the employee's work and their personal life. This scenario best describes which leadership theory?