Terrific folks at the University of Leeds have put together the ACT Fidelity Measure (ACT-FM).
About the ACT-FM
This measure is intended to be used by clinicians who are experienced in ACT and understand the principles of the approach. It can be used to rate clinician fidelity to ACT in a variety of contexts (e.g . as a tool to evaluate your own or another clinician’s practice, or as a research tool). The items capture four key areas within ACT: Therapist Stance, Open Response Style, Aware Response Style and Engaged Response Style. These are outlined below with definitions. There are items to score the therapist’s behaviours as consistent and inconsistent with these areas. For example, within the Open Response Style section, an ACT consistent item is ‘Therapist gives the client opportunities to notice how they interact with their thoughts and/or feelings (e.g . whether avoidant or open)’ and an ACT inconsistent item is ‘Therapist encourages the client to “think positive” or to substitute negative for positive thoughts as a treatment goal’. This is because it is possible to be both ACT consistent and inconsistent within the same therapy session, which may be useful to record for research or training purposes. The consistent and inconsistent items are not opposites of each other. If rating the inconsistent items is not relevant for your purposes, then please feel free to omit these items.
The full document is attached.