Re-Vision of Older Television Characters: A Stereotype-Awareness Intervention

This study examines whether greater television exposure predicts older individuals' more negative images of aging, and whether an intervention based on maintaining a television diary of viewing impressions will increase their awareness of the stereotypical and infrequent manner in which elders are presented. Seventy-six individuals, aged 60 to 92, participated. As expected, all participants showed a correspondence between greater television exposure and more negative images of aging. Also as expected, the intervention-group participants developed a greater awareness of how elders are presented on television. Further, the intervention-group participants expressed their intention to watch less television in the future. These findings suggest that the promotion of awareness provides a means of helping elders confront ageism .     

Effects of habitat fragment size and isolation on the density and genetics of urban red-backed salamanders (Plethodon cinereus)

Urban expansion is creating environmental stressors through land use change, habitat fragmentation, and habitat loss. These stressors, along with a host of others, are driving precipitous declines in vertebrate taxa around the world. Amphibians, often requiring a narrow range of environmental conditions, can be especially susceptible to the stressors of environmental change. Despite habitat loss and degradation, some amphibian species continue to persist in altered urban landscapes. The red-backed salamander (Plethodon cinereus) is one such- species and in this study, we assess how habitat patch size affects population density and genetic diversity of salamander populations in and around an urban center in Ohio, United States. Further, we examined patterns of genetic differentiation and landscape connectivity to understand gene flow between populations and tested for historic demographic bottleneck effects. Populations were sampled from 9 urban forest patches ranging in size from less than 1 ha to approximately 250 ha. There was no apparent effect of contiguous habitat patch size on salamander density nor genetic diversity, but we did observe significant genetic differentiation between 97% of pairwise population comparisons. The differentiation observed was not a result of overland distance or effective distance due to landscape resistance. There was evidence of historic bottlenecks at every site. These results suggest that density is driven by within-patch heterogeneity and that genetic diversity is affected by drivers other than patch size or contemporary population density. Our study demonstrates that red-backed salamanders can persist in wooded, urban parks, but that genetic diversity remains susceptible to demographic changes.