Evan M. Forman, James D. Herbert, Adrienne S. Juarascio, Peter D. Yeomans, John A. Zebell, Elizabeth M. Goetter Ethan Moitra (2012) The Drexel defusion scale: A new measure of experiential distancing. Journal of Contextual Behavioral Science, 1(1–2), 55-65. https://doi.org/10.1016/j.jcbs.2012.09.001 The Drexel Defusion Scale (DDS) is in Appendix Table A1.