Grow up, be persistent, and stay focused: keys for solving foraging problems by free-ranging possums.

Individuals within a species often vary in both their problem-solving approach and ability, affecting their capacity to access novel food resources. Testing problem-solving in free-ranging individuals is crucial for understanding the fundamental ecological implications of problem-solving capacity. To examine the factors affecting problem-solving in free-ranging animals, we presented three food-extraction tasks of increasing difficulty to urban common brushtail possums ().

A decomposition analysis to examine the change in the number of recipients in the comprehensive social security assistance (CSSA) system.

Social security is an important social and public policy measure to help address poverty in any contemporary society. The Comprehensive Social Security Assistance (CSSA) system in Hong Kong provides a safety net for those aged children and adults below 65 years old who cannot support themselves financially. It is designed to bring their income up to a prescribed level to meet their basic needs.

Modeling Internal Movement of Children Born in Hong Kong to Nonlocal Mothers.

In Hong Kong, approximately 300,000 children were born to Mainland China couples in the period 1991-2012. According to Basic Law, the mini constitution of Hong Kong Special Administrative Region (SAR) government, these parents do not have residence rights, but their children do. As a result, most of these children have returned to Mainland China with their parents.

Optimal Strategies for Reducing Number of People in the Social Security System.

Providing social security to the population in need has become a major expenditure for many governments. Reducing the number of dependents in the social security system and maintaining a dynamic economically active population is a high priority concern for policymakers. A good understanding of the dynamics of the social security system-specifically, who enters and who exits the system-would be helpful for formulating effective interventions.

Effect of CYP2D6 and CYP3A4 Genotypes on the Efficacy of Cholinesterase Inhibitors in Southern Chinese Patients With Alzheimer's Disease.

Alzheimer's disease (AD) is the most prevalent form of dementia, and age is strongly associated with the incidence of AD. This study aimed to investigate the association between the genotypes of CYP2D6, CYP3A4, and CYP2C9 genes to the clinical efficacy and tolerability of cholinesterase inhibitors (ChEIs) in Chinese patients with AD. One hundred seventy-nine patients with AD with newly prescribed with ChEIs were recruited.