View clinical trials related to Placebo Effect.
Filter by:The goal of this clinical trial is to learn if an educational website can help patients make an informed decision and engage in shared decision-making with their healthcare provider regarding cholesterol lowering medication use after they have stopped statin therapy due to self-reported muscle symptoms from taking a statin medication. The main questions the trial aims to answer are: 1. Compared to usual care, are patients who engage with the website after experiencing statin-associated muscle symptoms (SAMS) more likely to retry statin therapy? 2. Compared to usual care, are patients who retry statin therapy after engaging with the website more likely to persist on statin therapy? Researchers will compare people randomized to use the website to those who are receiving usual care to see if statin re-start and persistence rates change. All participants will take baseline questionnaires and receive usual care as they would if they were not in the study (e.g., visit their doctor, get labs drawn, take medication as prescribed). Patients randomized to the website arm will be asked to engage with content in a website which is anticipated to take most patients approximately 30-minutes. Their clinician will then contact them for a follow-up visit as needed.
The current study probes the involvement of the opioid system in placebo effects on social pain, using the opioid antagonist naloxone. 60 participants who recently experienced an unwanted breakup will experience rejection-related stimuli and receive painful heat and pressure stimuli during fMRI scanning. Participants will be randomized to receive either a naloxone or saline nasal spray, and be informed that the spray is either saline, or an effective pain and negative emotion reducing agent.
In this experiment, the investigators study the brain pathways underlying several promising context interventions that enhance the strength of placebo effects. Specifically, the investigators examine the separate and joint effects of two of the most powerful context interventions: Social modeling-observing someone else being effectively treated-and prior treatment success or failure experiences. Participants will be randomized into 4 groups (Social modeling: observed success vs. observed failure and Conditioning: experienced success vs. experienced failure). The objectives are to investigate the placebo effect on pain relief and aversive image stimuli between and within-subjects. Each group will undergo a behavioral induction phase, fMRI placebo test phase, and an identical 3-month follow up fMRI placebo test phase. Follow-up assessment will provide some of the first evidence on predictors of the durability of placebo and context interventions.