The First Episode Psychosis Services Fidelity Scale (FEPS-FS-1.0) is used to assess the degree to which mental health teams deliver specialized care comprised of a range of evidence-based practices to people experiencing a first episode psychosis and their families. Program fidelity refers to the extent to which delivery of an intervention adheres to the protocol of an evidence-based program model. Fidelity scales provide a list of objective criteria by which a program is judged to adhere to a reference standard for the intervention. The scale can be conceptualized as an outcome measure for implementation research or as a quality measure for assessing structure and process indicators in health care (Donabedian, 1966).