Future Empirical (future + empirical)

Distribution by Scientific Domains

Terms modified by Future Empirical

  • future empirical research

  • Selected Abstracts

    Taking species abundance distributions beyond individuals

    ECOLOGY LETTERS, Issue 6 2009
    Hélène Morlon
    Abstract The species abundance distribution (SAD) is one of the few universal patterns in ecology. Research on this fundamental distribution has primarily focused on the study of numerical counts, irrespective of the traits of individuals. Here we show that considering a set of Generalized Species Abundance Distributions (GSADs) encompassing several abundance measures, such as numerical abundance, biomass and resource use, can provide novel insights into the structure of ecological communities and the forces that organize them. We use a taxonomically diverse combination of macroecological data sets to investigate the similarities and differences between GSADs. We then use probability theory to explore, under parsimonious assumptions, theoretical linkages among them. Our study suggests that examining different GSADs simultaneously in natural systems may help with assessing determinants of community structure. Broadening SADs to encompass multiple abundance measures opens novel perspectives in biodiversity research and warrants future empirical and theoretical developments. [source]

    A Micro-Simulation Approach to Modelling Spatial Unemployment Disparities

    GROWTH AND CHANGE, Issue 3 2010
    ABSTRACT This paper aims to construct a comprehensive model capable of simulating spatial unemployment disparities. The key feature of the model is that it simultaneously deals with commuting and migration. Much of the existing literature simply models one adjustment mechanism at a time. This paper adopts a micro-simulation approach to build a model which can deal with equilibrium and disequilibrium unemployment disparities in a context where commuting and migration are possible. The model is then used to demonstrate the importance of considering both types of flows and to guide future empirical and theoretical work in the area. [source]

    The Role of Feelings in Investor Decision-Making

    Brian M. Lucey
    Abstract., This paper surveys the research on the influence of investor feelings on equity pricing and also develops a theoretical basis with which to understand the emerging findings of this area. The theoretical basis is developed with reference to research in the fields of economic psychology and decision-making. Recent advancements in understanding how feelings affect the general decision-making of individuals, especially under conditions of risk and uncertainty [e.g. Loewenstein et al. (2001). Psychological Bulletin 127: 267,286], are covered by the review. The theoretical basis is applied to analyze the existing research on investor feelings [e.g. Kamstra et al. (2000). American Economic Review (forthcoming); Hirshleifer and Shumway (2003). Journal of Finance 58 (3): 1009,1032]. This research can be broadly described as investigating whether variations in feelings that are widely experienced by people influence investor decision-making and, consequently, lead to predictable patterns in equity pricing. The paper concludes by suggesting a number of directions for future empirical and theoretical research. [source]

    Mexican American High School Students' Ethnic Self-Concepts and Identity

    Stephen M. Quintana
    Mexican American high school students (N= 24) were administered semistructured interviews about their psychological experience of ethnicity. The interview focused on individual, friendship, peer group, and family domains. Qualitative analyses of the interview transcripts revealed six domains including ethnic identity, socialization, intraethnic support and challenge, interethnic relations and attitudes, ethnic transcendence, and ethnic differences and similarities. These six domains were graphically depicted that differentiated ethnic self-concepts from ethnic identity processes and identified the intraethnic and interethnic influences of the ethnic self-concepts and identity processes. There were three ethnic self-concepts (i.e., cultural self, possible minority self, and self that transcends ethnic group boundaries). These basic three ethnic self-concepts are consistent with other researchers' identification of analogous ethnic self-concepts and socialization messages across a wide range of contexts. Implications for future empirical and theoretical research are discussed. [source]

    Differences between peer victimization in cyber and physical settings and associated psychosocial adjustment in early adolescence

    Allison G. Dempsey
    The increasing use of cyberspace as a social networking forum creates a new medium for youth to become victims of peer aggression. This study used factor analysis techniques to confirm whether survey questions about frequency of cyber victimization formed a distinct latent construct from questions about relational and overt victimization information in a large (N = 1,665) sample of middle school students. A secondary goal was to relate experiences of cyber victimization to symptoms of depression and social anxiety. Results indicate that cyber victimization is separate latent factor from overt and relational victimization. Experiences of cyber victimization were weakly associated with symptoms of social anxiety, but not depression. These results signify that cyber victimization deserves future empirical and clinical attention. © 2009 Wiley Periodicals, Inc. [source]