Ingroup preferences, segregation, and intergroup contact in neighborhoods and civic organizations.

Segregation perpetuates social inequalities and undermines social cohesion. It can already emerge if individuals act upon weak preferences to associate with similar others. Yet, little remains known about how such ingroup preferences compare across social settings and different identity dimensions.

Choosing Your Sports Partners: Assessing Selection Preferences Through Observational and Experimental Studies.

Previous research has demonstrated the positive impact of doing sports together on maintaining physical activity levels. Yet, there remains a gap in understanding the selection processes leading to sports partnerships. We address this question using a two-study design.

Running Together: How Sports Partners Keep You Running.

We examined how recreational runners benefit from running with others to maintain a consistent training regimen over time. We used data from the ABS project ("Always Keep Active"). Our sample consisted of more than 800 individuals who had registered to participate in the 2019 edition of the 7K or 15K Seven Hills Run (Nijmegen, The Netherlands) for the first time.

Shared Decision Making About Housing Transitions for Persons With Dementia: A Four-Case Care Network Perspective.

Background: Persons with dementia (PWDs) and their caregivers often face difficult housing decisions, that is, decisions about their living arrangements, in which the perspectives of all members of the care network should be involved.

Objective: We performed a qualitative data analysis to assess the extent to which housing decisions for PWDs with their formal and informal caregivers correspond to an interprofessional shared decision making (IP-SDM) approach, and what light this approach sheds on their experiences with decision making.

Research Design And Methods: We used the IP-SDM model to content-code and analyze data from 4 care networks, each consisting of a PWD, 2 informal and 2 formal caregivers.

Floating plant dominance as a stable state.

Invasion by mats of free-floating plants is among the most important threats to the functioning and biodiversity of freshwater ecosystems ranging from temperate ponds and ditches to tropical lakes. Dark, anoxic conditions under thick floating-plant cover leave little opportunity for animal or plant life, and they can have large negative impacts on fisheries and navigation in tropical lakes. Here, we demonstrate that floating-plant dominance can be a self-stabilizing ecosystem state, which may explain its notorious persistence in many situations.