Investigating patient-specific mechanisms of change in SET vs. EFT for depression: study protocol for a mechanistic randomized controlled trial

Does emotional freedom techniques affect premenstrual syndrome? A randomized controlled study

OBJECTIVE

The study was conducted to determine the effect of emotional freedom techniques (EFT) on the severity of premenstrual syndrome (PMS).

METHODS

The study was conducted as a randomized controlled trial, with a premenstrual syndrome sample comprising 78 single female students of reproductive age presenting with PMS complaints (40 in the experimental group and 38 in the control group). Students in the experimental group were interviewed individually in the week before their menstrual cycle and received two EFT sessions with a 3-day interval.

RESULTS

The participants in the experimental group had higher post-test subjective units of experience (SUE) mean scores (experimental group mean 7.8 ± 1.7; control group mean 0.5 ± 5.7) and lower post-test PMS total (experimental group mean 76.8 ± 30.1; control group mean 127.4 ± 34.6) and subscale mean scores than the students in the control group, and the difference between the groups was statistically significant (P < 0.05). In repeated measures analysis, time-dependent change showed statistical significance between the groups (P < 0.05).

CONCLUSION

The EFT was found to be an effective non-pharmacologic intervention for coping with PMS.

"Vulnerability can breed strength": The role of borderline personality disorder severity in movement synchrony among patients with major depressive disorder

Objective: Patients with Major depressive disorder (MDD) and a comorbid Borderline personality disorder (BPD) show a poorer prognosis for MDD compared to patients without BPD. Little is known about the therapeutic processes underlying this prognosis. The goal of the present study was to investigate whether patients with more severe BPD symptoms experience less strengthening in patient-therapist movement synchrony (MS) throughout treatment, and whether less strengthening in MS is associated with less effective sessions. Method: Ninety-five patients participating in a randomized control trial were assessed for BPD (N = 9) using the Structured Interview for DSM-IV Personality. 1367 video-taped sessions were analyzed for MS using Motion Energy Analysis. Session effectiveness was evaluated following each session using a one-item scale taken from the Helping Skills Measure. Multilevel models were used to assess whether BPD severity predicted MS throughout treatment, and whether MS predicted session effectiveness. Results: Patients with more severe BPD symptoms experienced greater strengthening in MS throughout treatment. Less MS strengthening was associated with less session effectiveness. Conclusion: These findings indicate unique therapeutic processes that characterize individuals with more severe BPD symptoms. Shedding light on these unique processes has the potential to contribute to the personalization of MDD treatment for patients with BPD.

The Effects of Emotional Freedom Techniques Implemented During Early Pregnancy on Nausea-Vomiting Severity and Anxiety: A Randomized Controlled Trial

Objective: This randomized controlled trial investigated the effect of emotional freedom techniques (EFT) on the severity of nausea-vomiting and anxiety in early pregnancy. Design: The sample consisted of 131 pregnant women in the experimental and control groups between 6 and 16 weeks of pregnancy attending an antenatal clinic. Participants were randomly assigned to receive training on EFT or a control group. Data were collected using a personal information form, subjective experiences, the Pregnancy-Related Anxiety Questionnaire, and the Pregnancy-Unique Quantification of Emesis. Both groups attended two visits, a week apart. The participants in the EFT group received a session of EFT at each visit and completed two EFT sessions as home assignments, 2 and 4 days after the first visit. The participants in the control group attended two visits a week apart and completed assessments but did not receive EFT. Results: There were 55 women in each group who completed the study, and the groups were similar in terms of baseline measures, including socioeconomic status, smoking status, previous pregnancy, severity of nausea-vomiting, and total pregnancy-related anxiety. EFT significantly reduced anxiety levels from the baseline to the second session (fear of delivery, worries about bearing a handicapped child, concern about one's own appearance) and total pregnancy-related anxiety (total pretest 29.85 ± 9.87, post-test 20.67 ± 8.38; p < 0.001), while the control group showed no reduction in pregnancy-related anxiety (total pretest 26.1 ± 7.79, post-test 25.98 ± 8.49; p = 0.933). Although nausea-vomiting was reduced in both groups over the two-session period, at the end of treatment, the EFT group had significantly lower nausea intensity (EFT group 4.4 ± 1.81, control group 5.36 ± 2.48; p = 0.02). Conclusions: EFT is a nonpharmacologic intervention that can be effective in reducing nausea, vomiting, and anxiety in early pregnancy. Clinical Trials Registration Number: NCT05337852.

Revealing subgroup-specific mechanisms of change via moderated mediation: A meditation intervention example

OBJECTIVE

Effective psychosocial interventions exist for numerous mental health conditions. However, despite decades of research, limited progress has been made in clarifying the mechanisms that account for their beneficial effects. We know that many treatments work, but we know relatively little about why they work. Mechanisms of change may be obscured due to prior research collapsing across heterogeneous subgroups of patients with differing underlying mechanisms of response. Studies identifying baseline individual characteristics that predict differential response (i.e., moderation) may inform research on why (i.e., mediation) a particular subgroup has better outcomes to an intervention via tests of moderated mediation.

METHOD

In a recent randomized controlled trial comparing a 4-week meditation app with a control condition in school system employees (N = 662), we previously developed a "Personalized Advantage Index" (PAI) using baseline characteristics, which identified a subgroup of individuals who derived relatively greater benefit from meditation training. Here, we tested whether the effect of mindfulness acquisition in mediating group differences in outcome was moderated by PAI scores.

RESULTS

A significant index of moderated mediation (IMM = 1.22, 95% CI [0.30, 2.33]) revealed that the effect of mindfulness acquisition in mediating group differences in outcome was only significant among those individuals with PAI scores predicting relatively greater benefit from the meditation app.

CONCLUSIONS

Subgroups of individuals may differ meaningfully in the mechanisms that mediate their response to an intervention. Considering subgroup-specific mediators may accelerate progress on clarifying mechanisms of change underlying psychosocial interventions and may help inform which specific interventions are most beneficial for whom. (PsycInfo Database Record (c) 2024 APA, all rights reserved).