“…Gender and ethnicity can also affect hypnosis efficacy. Last but not least the labeling of the interventions can influence the response of the patient (Hendler & Redd, 1986). The impact of levels of hypnotizability (E. R. Hilgard & Hilgard, 1975;Lang, Joyce, Spiegel, Hamilton, & Lee, 1996;Patterson & Jensen, 2003;Richardson et al, 2006) and the dose-response effect of audiotape practice (Laidlaw & Willett, 2002;Liossi & Hatira, 2003;Patterson & Jensen, 2003) on hypnosis efficacy, however, are more controversial but should be assessed in a high-quality RCT.…”