Healthy Paid Clinical Trials in Rhode Island

The goal of this basic experimental clinical trial is to understand the effect of multitasking practice on the structure of neural representations of tasks in the human lateral prefrontal cortex and control brain regions. The main question it aims to answer is: What changes in neural representational structure predict improvements in multitasking behavior due to multitasking practice? Healthy human participants will learn two independent tasks, each mapping a set of stimuli to motor responses based on different rules. Participants will be randomized to one of two interventions. Participants assigned to the multitask practice intervention (MPI) will practice multitasking the two tasks over multiple days. Those assigned to the single-task practice intervention (SPI) will instead practice each task separately while controlling for the total number of practice opportunities associated with each task across the interventions. Both before and after the practice, the ability of all participants to perform both tasks simultaneously will be behaviorally measured using a well-established psychological refractory period (PRP) paradigm, and their neural representations will be measured using functional MRI while they perform the two tasks. Researchers will then compare improvements in multitasking behavior across the two groups, as well as changes in neural representational geometry of the tasks in the lateral prefrontal cortex and control brain regions, and test whether multitasking training is associated with specific changes in neural representations in the lateral prefrontal cortex. Read Less

A growing body of evidence suggests that sleep facilitates and is beneficial to perceptual learning. However, the underlying mechanism of this facilitatory action is largely unknown. One must know what type of processing occurs during sleep to clarify the mechanism of sleep facilitating perceptual learning. For this purpose, investigators will obtain highly localized spatio-temporal information about brain activation during sleep using magnetic resonance imaging (MRI) and polysomnography (PSG) measurement. Read Less

The goal of this single-arm feasibility study is to evaluate the feasibility and acceptability of an 8-week mindful self-compassion intervention and associated data-collection plan among transgender and nonbinary young adults. Participants will be asked to: * Complete weekly 2.5-hour virtual classes for 8 weeks and a 4-hour virtual retreat * Practice specific activities in between classes for 20-30 minutes a day * Answer survey questions before starting the intervention, half-way through the intervention, after the intervention, and 3-months after the intervention ends. Read Less

The goal of this clinical trial is to test the ability of a home-based parental nutrition intervention to improve diet quality in preschool aged children within low-income, Latinx/Hispanic families. The main questions it aims to answer are: * Does this enhanced intervention change children's diet quality? * Does this enhanced intervention change parental feeding practices? * Does this enhanced intervention change the availability of healthy foods in the home? Participants will: * Work with a support coach * Have a home visit with a support coach once a month, for three months * Have a phone call with a support coach once a month, for three months * Receive written materials and text messages over the six months Researchers will compare a control group receiving different written materials and messages to see if the enhanced intervention changes diet quality in children. Read Less

This small scale healthy eating study provides Southeast Asian families with children ages 6 to 11 with a family-based nutrition education, one-on-one interviews to help with motivation to eat health, text messaging, and coupons to purchase health foods and beverages. Since this is a small scale study that is a pilot intervention, the main goal of this intervention is to determine if it is feasible, meaning, can it be done. The second goal of this intervention is to determine if there are meaningful improvements in children's healthy eating patterns, body mass index and HbA1c. The third goal is to see if the intervention improves parent's diet quality, HbA1c and the home food environment. These study findings will be used to determine whether a larger clinical trial is needed, and if so, how it should be done. Read Less