A team member continually improves, acting as a role model and mentor to others. How should the project manager acknowledge this person's commitment?

Acknowledging positive behavior as it occurs, or "throughout the project life cycle," reinforces desired actions and motivates the individual and the team. Waiting until an end-of-year review diminishes the immediate impact and connection to the specific contributions. Sending the person to negotiate scope might be a development opportunity, but it's not primarily an acknowledgment of their role-modeling and mentoring. Promoting them to a coaching role after the project is a future opportunity, not an immediate recognition of their ongoing commitment. Continuous appreciation is a powerful and timely motivational tool.