This study seeks to understand how different things about your life, like your upbringing, might affect how you feel about having kids in the future. By looking at how your background and experiences shape your thoughts on having children, we hope to learn more about what factors influence people's decisions about starting a family.

Do you have problems with your thinking or memory? Or a parent or sibling with dementia? If so, we'd like you to join this registry about the brain and Alzheimer's disease. In return for providing us with a little bit of your health history and background, we will connect you with researchers doing studies you can join, without obligation. Many studies pay a stipend and some offer a possible treatment.

Are you the parent of a female 13-15 year old teen? Do you have a history of depression? If so, you and your teen may be able to participate in a study looking at teenager's brain responses, emotions, social interactions, and depression risk. Families can be paid up to $375 for their participation in the study.

Have you ever been concerned about your eating? We're inviting adults in the U.S. who have ever had anorexia nervosa, atypical anorexia nervosa, bulimia nervosa, binge-eating disorder, or avoidant/restrictive food intake disorder (ARFID) at any point in their life to take our survey. No official medical diagnosis is required. Common signs of different eating disorders may include: restricting the amount or type of food you eat or eating excessive amounts of food in one sitting. Some other possible signs are making yourself throw up, using diet pills or laxatives, excessively exercising, or fasting to alter your weight. Only with your help can we the causes and potential cures for these disorders. Eligible participants who complete Core Questionnaires and return their saliva sample will receive a $30 gift card.

The purpose of this research study is to investigate how human interpret some predictive learned by AI systems when detecting deceptive hotel reviews and how AI explanations can shape human understanding. For instance, the AI system learns that words like "floor" and "bathroom" are highly predictive of genuine reviews and words like "husband" and "luxury" are highly predictive of deceptive reviews. While the AI system highlights these words by learning from the data, the association between these words and the outcome are not easy to comprehend for humans. Thus, our goal of this research is to investigate how participants interact with machine-generated explanations that are unintuitive, and how participants make use of our developed visualizations and tools to make sense of these unintuitive features.

Have you ever noticed yourself repeatedly thinking or doing specific things? Have you experienced symptoms of OCD now or in the past (even if you did not seek treatment)? Do you identify as Black? If you have (or think you might have) OCD, you may be able to participate in a study to learn more about OCD and new methods for prevention and treatment. Participants will receive $50.

Have you torn your ACL and undergone reconstruction surgery? Or do you have no history of lower extremity surgery? You may be eligible to participate in a research study to determine the effects of stroboscopic vision on walking gait biomechanics in those who have torn their ACL, and if somatosensory function may influence these changes.

Test whether language adaptation effects can be seen in eye-movement analysis.

The purpose of this study is to find out whether the current method of calculating stomach volume using ultrasound is accurate in patients who have had a previous gastric sleeve procedure. This will help in determining whether ultrasound can be used to determine whether this population has fasted for long enough before surgery.

Do you want to know more about your calf muscles? Do you get tired easily? You may be able to participate in a research study to find out the effect of your calf muscle length on your muscle activity and fatigue.