The relationship between first-level leadership and inner-context and implementation outcomes in behavioral health: a scoping review.

Background: First-level leadership is uniquely positioned to support evidence-based practice (EBP) implementation for behavioral health due to first-level leaders' access to and relationship with service providers. First-level leaders are individuals who directly supervise and manage frontline employees who do not manage others. However, first-level leadership is underrepresented in existing reviews of the impact of leadership on EBP implementation.