What must a commission rule be based on?

A commission rule must be based on statutory regulations from the governing body because these regulations provide the legal framework and authority under which the commission operates. Statutory regulations are established laws that dictate how a profession should be governed and ensure that rules are created in compliance with existing legal standards. This legal basis is essential to guarantee that the rules are enforceable and align with the overall legislative intent regarding professional practice in psychology.

In contrast, other options, such as current trends in psychological practice or written consensus among psychologists, may inform best practices but do not have the same legal standing as statutory regulations. While recommendations from educational institutions can contribute valuable insights, they are typically not mandated by law and therefore would not serve as the primary foundation for a commission rule. The emphasis on statutory regulations ensures that the rules are grounded in law, maintaining the integrity and accountability of the psychological profession.