The role of ecological constraints in promoting sociality is currently much debated. Using a direct-fitness approach, we show this role to depend on the kin-discrimination mechanisms underlying social interactions. Altruism cannot evolve under spatially based discrimination, unless ecological constraints prevent complete dispersal. Increasing constraints enhances both the proportion of philopat...

In a simple game, coalitions belonging to a given class are “absolutely powerful” while others have no power. We attempt to make this distinction operational. Toward this end, we propose two axioms on social choice correspondences, Strong Non-Discrimination and Exclusion. Strong NonDiscrimination describes circumstances under which certain coalitions, the losing coalitions, have no influence ov...

Persistent and vexing health disadvantages accrue to African Americans despite decades of work to erase the effects of race discrimination in this country. Participating in these efforts, psychologists and other social scientists have hypothesized that African Americans' continuing experiences with racism and discrimination may lie at the root of the many well-documented race-based physical hea...

Age discrimination is pervasive in the United States, yet little is known about the social contexts in which it occurs. Older persons spend much of their time in their neighborhoods, where a density of other older persons may protect against age discrimination. Extending group density theory to age, we analyze data from 1,561 older adults from the second wave of the National Survey of Midlife D...

BACKGROUND Depression is the third leading contributor to the worldwide burden of disease. We assessed the nature and severity of experienced and anticipated discrimination reported by adults with major depressive disorder worldwide. Moreover, we investigated whether experienced discrimination is related to clinical history, provision of health care, and disclosure of diagnosis and whether anti...

Despite the increased prevalence of weight discrimination, few studies have examined the association between perceived weight discrimination and the prevalence of current psychiatric disorders in the general population. This study utilized a subsample of overweight and obese individuals (N = 22,231) from Wave 2 of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a c...

Although discrimination remains prevalent, the reasons for its occurrence are still hotly debated. To disentangle vying explanations, researchers have begun using laboratory experiments. However, this research has not allowed, or studied, the effects of selection. In this paper, we examine discrimination in a Trust game where subjects can and cannot select partners. We find little evidence of d...

Although researches (e.g., K. L. Dion, K. K. Dion, & A. W.-p. Pak, 1992) have associated perceiving personal discrimination with negative psychological symptoms, group consciousness theorists (e.g., S. L. Bartky, 1977) have suggested that perceiving personal discrimination can be empowering. To attempt to reconcile these presumably opposing findings, the author suggested that the method of copi...

The present study examines the consequences of perceived interpersonal discrimination on stress, health, and performance in a sample of 210 science, technology, engineering, and mathematics (STEM) academicians. Using a path model, we test the relation that perceived interpersonal discrimination has on stress and the relation of stress to physical health maladies and on current and future perfor...

Obesity is widely recognized as a health risk, but it also represents a disadvantaged social position. Viewing body weight within the framework of stigma and its effects on life chances, we examine how perceived weight-based discrimination influences identity and physical health. Using national survey data with a 10-year longitudinal follow-up, we consider whether perceptions of weight discrimi...