Final answer:
Refraining from setting high expectations is not a recommended strategy for being an effective supervisor. Instead, understanding organizational expectations and building good relationships while setting clear and achievable goals are essential for success.
Step-by-step explanation:
The strategy that is NOT suggested for becoming an effective supervisor is D) Refrain from setting high expectations for the group because this is one-sided and not employee-centered. Contrarily, setting clear, achievable, and high expectations can be beneficial as it encourages employees to perform better and align their efforts with the organization's goals. Conducting a self-assessment, understanding the overt expectations of the organization, and observing others are all useful strategies to help one assimilate into a supervisory role and understand both written and unwritten organizational expectations.
To be successful in a supervisory role, it is vital to blend knowledge of the organizational structure and dynamics with personal leadership qualities and relationship building. Finding a balance between keeping high standards and being employee-centered fosters a productive environment where both the supervisor and employees can thrive.