The middle two scale points are closest to current fidelity assessment, measuring whether critical elements of a practice have been displayed by the practitioner. Unfortunately, there is no research to guide the selection of one single element, as done with the CSI. Many evidence-based practices for schizophrenia are bundled, with multiple components and techniques. Review papers and correlational studies have sought to identify critical ingredients of these practices, but the literature has not advanced past the point of speculation to identify a single necessary and sufficient program element. Until ample deconstruction studies have been done to parse out the most critical of program factors, we must resign ourselves to assessing multiple program domains.