Proxy medical decision-making: national survey.

Objectives: Population ageing and increased care needs lead to adults making consequential medical decisions for others, potentially impacting treatment and end of life. We aim to describe the prevalence of medical decision-making by proxy among the national population and associated demographic and care factors.

Methods: We designed a cross-sectional online survey with a nationally representative adult cohort with an 80% participation rate.

Observation of perovskite topological valley exciton-polaritons at room temperature.

Topological exciton-polaritons are a burgeoning class of topological photonic systems distinguished by their hybrid nature as part-light, part-matter quasiparticles. Their further control over novel valley degree of freedom (DOF) has offered considerable potential for developing active topological optical devices towards information processing. Here, employing a two-dimensional (2D) valley-Hall perovskite lattice, we report the experimental observation of valley-polarized topological exciton-polaritons and their valley-dependent propagations at room temperature.

Examining the Measurement Equivalence of Alzheimer Disease Research Centers' Neuropsychological Test Battery (Version 3) Between Singapore and US Samples.

Purpose: Standardization of neuropsychological tests is crucial for consistency in cognitive assessment, as well as for validity and comparability of results across different populations. We examined the applicability and measurement equivalence of the Alzheimer Disease Research Centers' Neuropsychological Test Battery (version 3) (ADRC-NTB3) in Singapore.

Methods: The ADRC-NTB3 was administered to 978 older persons with normal cognition in Singapore.

Effectiveness of Horticultural Therapy in Older Adults without Dementia: A Systematic Review and Meta-Analysis.

Objectives: Horticultural therapy (HT) has garnered growing interest because of its psychological and physical benefits. Previous reviews have demonstrated its therapeutic effects in older adults with cognitive impairment or mental illnesses. However, its impact on older adults without dementia has not been synthesized.

Trembling Motion of Exciton Polaritons Close to the Rashba-Dresselhaus Regime.

We report the experimental observation of trembling quantum motion, or Zitterbewegung, of exciton polaritons in a perovskite microcavity at room temperature. By introducing liquid-crystal molecules into the microcavity, we achieve spinor states with synthetic Rashba-Dresselhaus spin-orbit coupling and tunable energy splitting. Under a resonant excitation, the polariton fluid exhibits clear trembling motion perpendicular to its flowing direction, accompanied by a unique spin pattern resembling interlocked fingers.