French norms for the online Sussex-Waterloo Scale of Hypnotizability

This paper presents French norms for the online version of the Sussex-Waterloo Scale of Hypnotizability. This scale is an online adaptation of the well-established Waterloo-Stanford Group C scale of hypnotic susceptibility with both behavioural and subjective scores. Insofar as hypnotizability (the ability to respond to suggestions in a hypnotic context) varies substantially in the general population and remains generally stable throughout life, it is important to measure it in experiments using hypnotic suggestion. However, these scales are time consuming, as they often require multiple sessions in order to achieve a suitable sample size for subsequent participant screening. One promising route for overcoming this inconvenience is to perform hypnotizability assessment online. The Sussex-Waterloo Scale of Hypnotizability is the first to have demonstrated the viability of online measurement. We show that our translation of this scale yields similar statistics. Alongside recent critics of the classic scales of hypnotizability, we point to limitations of this scale and discuss ways of accommodating some of its drawbacks.

Intrafractional stability of MR-guided online adaptive SBRT for prostate cancer

Background MR-guided online adaptive stereotactic body radiation therapy (SBRT) for prostate cancer aims to reduce toxicity by full compensation of interfractional uncertainties. However, the process of online adaptation currently takes approximately 45 min during which intrafractional movements remain unaccounted for. This study aims to analyze the dosimetric benefit of online adaptation and to evaluate its robustness over the duration of one treatment fraction. Methods Baseline MR-scans at a MR-linear accelerator were acquired for ten healthy male volunteers for generation of mock-prostate SBRT plans with a dose prescription of 5 × 7.25 Gy. On a separate day, online MR-guided adaptation (ViewRay® MRIdian) was performed, and thereafter MR images were acquired every 15 min for 1 h to assess the stability of the adapted plan. Results A dosimetric benefit of online MR-guided adaptive re-planning was observed in 90% of volunteers. The median D95CTV- and D95PTV-coverage was improved from 34.8 to 35.5 Gy and from 30.7 to 34.6 Gy, respectively. Improved target coverage was not associated with higher dose to the organs at risk, most importantly the rectum (median D1ccrectum baseline plan vs. adapted plan 33.3 Gy vs. 32.3 Gy). The benefit of online adaptation remained stable over 45 min for all volunteers. However, at 60 min, CTV-coverage was below a threshold of 32.5 Gy in 30% of volunteers (30.6 Gy, 32.0 Gy, 32.3 Gy). Conclusion The dosimetric benefit of MR-guided online adaptation for prostate SBRT was robust over 45 min in all volunteers. However, intrafractional uncertainties became dosimetrically relevant at 60 min and we therefore recommend verification imaging before delivery of MR-guided online adapted SBRT.

Supporting disaster impacted youth : evaluation of a universally delivered online mindfulness intervention

There is an increase in youth-reported traumatic stress, youth behavioral health problems, and an upward trend in the prevalence and severity of large-scale disasters within the US. Youth are especially vulnerable to adverse behavioral health problems following a disaster. Many young people do not seek treatment for their behavioral health problems and this discrepancy is magnified by various obstacles to successfully implementing school-based behavioral health interventions to youth impacted by disasters. Youth experiencing internalizing symptoms and youth of color are disproportionately impacted by disaster-related stress and are less likely to receive behavioral health interventions after a disaster. As such, researching the impact of universally delivered programs for this population is warranted. The current study seeks to examine the feasibility and initial efficacy of an online adaptation of the Dynamic Mindfulness program in a quasi-experimental, within-group/ pretest-posttest design, with 44 youth, ages 11-17. The evidence demonstrates that the online adaptation of the selected youth mindfulness program was feasible, acceptable, and related to significant, short-term, pretest to posttest improvements in several of the targeted outcomes and reveals a significant relationship between youth-reported mindfulness and various social and emotional outcomes within study participants, warranting continued inquiry within this scope of research.