B. Barrett

Abstract Recent advances in atom interferometry have led to the development of quantum inertial sensors with outstanding performance in terms of sensitivity, accuracy, and long-term stability. For ground-based implementations, these sensors are ultimately limited by the free-fall height of atomic fountains required to interrogate the atoms over extended timescales. This limitation can be overcome in Space and in unique “microgravity” facilities such as drop towers or free-falling aircraft.

Introduction Adults with an intellectual developmental disorder (IDD) are at risk of developing mental health problems. According to Hughes-McCormack et al. (2017), about one in four adults with IDD is affected by mental health problems. Findings from a recent meta-analysis (Mazza et al. 2020) indicate a pooled prevalence rate of 33.6% of psychiatric disorders (excluding autism) in adolescents and adults with IDD compared with 17% in the general population.

Introduction In the past 50 years, the humanitarian perspective has led to a paradigm change in working with persons with neurodevelopmental disorders. Nowadays, the focus is on the strengths and rights of affected persons to enable them to participate in society in the way they individually chose (US General Assembly, 2006). Thus, a comprehensive perspective in maintaining their mental health and possibilities of participation in social life is pivotal.