Should these results be replicated across different samples and indices of change, preliminary prognostic and prescriptive recom- mendations can be drawn. Individuals with lower baseline and/or recovery heart rate variability at pre-treatment may be particularly well suited for behavioral treatment for anxiety, whether it be CBT or ACT. Individuals with greater avoidance of an anxiety-inducing task at pre-treatment may improve more in ACT than CBT. Conversely, those with less behavioral avoidance of an anxiety- inducing task may be better suited for CBT.