Emotion Dysregulation

The aim of this study is to evaluate the feasibility and preliminary effects of PrevED MR, a group-based preventive intervention for adolescents and young adults at risk of developing eating disorders. PrevED MR is based on dialectical behavior therapy skills and uses mixed reality and virtual reality activities to support emotion regulation, mindfulness, distress tolerance, and body-related acceptance. Participants will be randomly assigned to either the PrevED MR intervention group or a waiting-list control group. The intervention will be delivered over 6 weeks, with two sessions per week, for a total of 12 sessions. Assessments will be conducted at baseline and after the intervention to examine changes in eating disorder symptoms, body image acceptance, emotion regulation strategies, rumination, usability, sense of presence, cybersickness, satisfaction, and adherence.

The goal of this study is to find out if improving emotion regulation skills use during pregnancy reduces maternal stress and improves heart rate. The main questions it aims to answer are: * Does improving emotion regulation skills during pregnancy reduce stress and improve the ability to cope? * How is a participant's heart rate affected by their ability to control their emotions during pregnancy? Researchers will test the hypothesis that dialectical behavior therapy skills groups (DBT-P) will improve emotion regulation skills use as well as heart rate. Participants will: * Visit the clinic for 3 sessions at the beginning, middle and end of their pregnancy. * Compete surveys and interviews asking about their thoughts, feelings and how they cope with emotions. * Have their heart rate taken. * If assigned to the investigational group, they will complete weekly remote emotion regulation skills groups for 10 weeks and complete daily diary cards that ask about mood and any thoughts of self-harm. * Optional Element: Complete a 20-30min infant neurobehavior exam (NNNS exam) after delivery.

The primary goal of this clinical trial is to evaluate the unique neural and behavioral effects of a one-session training combining emotion regulation skills training, with excitatory repetitive transcranial magnetic stimulation (rTMS) over the dorsolateral prefrontal cortex (dlPFC). The secondary aim is to identify key changes in the emotion regulation neural network following the combined intervention versus each of the components alone. The third aim is to explore personalized biomarkers for response to emotion regulation training. Participants will undergo brain imaging while engaging in an emotional regulation task. Participants will be randomly assigned to learn one of two emotion regulation skills. Participants will be reminded of recent stressors and will undergo different types of neurostimulation, targeted using fMRI (functional MRI) results. Participants who may practice their emotion regulation skills during neurostimulation in a one-time session. Following this training, participants will undergo another fMRI and an exit interview to assess for immediate neural and behavioral changes. Measures of emotion regulation will be assessed at a one week and a one month follow up visit.