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Demographic Attributes (demographic + attribute)

Distribution by Scientific Domains

Business, Economics, Finance and Accounting	50%

Selected Abstracts

Demography of an Afrotropical passerine in a highly fragmented landscape

ANIMAL CONSERVATION, Issue 1 2006
M. Githiru
Abstract Demographic attributes of discrete subpopulations of animals and plants that constitute a larger (meta)population network may affect the strength and direction of local population responses to habitat loss or degradation. To address this question in an Afrotropical context, we studied survival rates, population densities, sex ratios and age distributions in seven white-starred robin Pogonocichla stellata populations inhabiting differently sized forest remnants in a highly fragmented Kenyan landscape. Sex ratios were strongly male biased, especially during the non-breeding season, but the level of bias did not differ between age groups nor fragment sizes. Juvenile to adult ratios were smallest in the medium-sized fragment, but did not differ between the largest and smallest fragments. Low population density combined with a skewed sex ratio in the medium-sized fragment pointed towards a local scarcity of females, which was supported by the presence of unmated territorial males. Based on capture,recapture analysis, all populations were considered stable on average. When combining demographic patterns with those emerging from a recent population genetic study and removal experiment, our results support the notion that small populations inhabiting tiny habitat remnants may play an important role in augmenting the long-term survival of spatially structured populations. [source]

Product attributes, consumer benefits and public approval of genetically modified foods

INTERNATIONAL JOURNAL OF CONSUMER STUDIES, Issue 5 2003
Ferdaus Hossain
Abstract The use of biotechnology in food production has generated considerable debate involving the benefits and risks associated with its use. Consumer acceptance of genetically modified foods is a critical factor that will affect the future of this technology. Using data from a national survey, this study examines how public acceptance of food biotechnology is related to consumers' socioeconomic and value attributes as well as the benefits associated with the use of this technology. Empirical results suggest that consumer acceptance of food biotechnology increases considerably when the use of this technology brings tangible benefits for the public. Consumers with different socioeconomic and demographic attributes have diverging views of food biotechnology only when its use brings specific benefits to them. When the use of genetic technology confers no additional benefit, public attitudes towards genetically modified foods are driven primarily by their scientific knowledge, views of scientists and corporations associated with biotechnology as well as public trust and confidence in government. [source]

Agreement in Self,Other Ratings of Leader Effectiveness: The role of demographics and personality

INTERNATIONAL JOURNAL OF SELECTION AND ASSESSMENT, Issue 2 2009
Robert P. Vecchio
Personality and demographic attributes for a set of 1221 focal managers were examined as correlates of leadership effectiveness evaluations that were obtained via a 360° feedback program. Polynomial regression was used to study the congruence of self-ratings provided by focal managers relative to the different evaluative perspectives (i.e., immediate superior, peer, and subordinate). Analyses supported the prediction that focal manager's sex and age would be associated with the ratings provided by themselves and others. Plus, the tendency to overestimate one's own leader effectiveness relative to evaluations provided by others was found to be greater for males and older managers. Focal managers who expressed greater social sensitivity were evaluated more favorably by subordinates and peers, although not by superiors. Ratings of leader effectiveness from immediate superiors were, instead, more readily predicted by judgments of the performance of the focal manager's organizational unit relative to comparable units. Results of polynomial regression analysis, however, indicated that self,other agreement was related to the focal's sex, social sensitivity, and social dominance. Implications for understanding obstacles to openness to change are discussed. [source]

Immigration Policy and Employment Conditions of US Immigrants from Mexico, Nicaragua, and the Dominican Republic1

INTERNATIONAL MIGRATION, Issue 5 2005
Katharine M. Donato
ABSTRACT Prior studies suggest that the passage of the Immigration Reform and Control Act (IRCA) in 1986 signalled a deterioration in the labour market conditions of Mexican migrants. In this paper, we examine whether and how labour market conditions worsened for Dominicans and Nicaraguans after 1986, and the extent to which these shifts were comparable to those experienced by Mexicans. Our analysis relies on a new source of data that offers comparable data across the three national origins. We estimate multivariate models that capture the effects of demographic attributes, human and social capital, migration-specific human and social capital, legal status, period of trip, national origin, and other controls on the hourly wages earned by household heads and whether they received cash wages on their last US trip. Models with interaction terms reveal significant pre- and post-1986 wage effects, but few differences in these effects between Mexicans and Dominicans or Nicaraguans. In contrast, group differences appear in the risk of cash receipt of wages. Dominicans and Nicaraguans experienced a greater increase in this risk relative to Mexicans pre- and post-1986. Together, these findings depict a broader, negative impact of IRCA on Latino migrant wages than has been documented elsewhere. [source]