An Evaluation of Hispanic Population Estimates*

Objective. Estimates of the Hispanic population have traditionally been based on historical trends, ratios, or some variant of the cohort‐component method. In this article, we describe and test a methodology in which estimates of the Hispanic population are based on symptomatic indicators of population change such as births, deaths, and school enrollments. Methods. Using a variety of techniques, we develop Hispanic population estimates for counties in Florida. We evaluate the accuracy of those estimates by comparing them with 2000 Census counts. Results. Hispanic population estimates have larger errors than estimates of total population; errors vary considerably by population size and growth rate; some techniques perform better than others in places with particular population characteristics; and averages often perform better than individual techniques. Conclusions. In many circumstances, symptomatic data series can provide more accurate estimates of the Hispanic population than more commonly used techniques.     

The Couch Project

Carl Couch had a distinctive project. He was a man of distinctive character. In this commentary, I first describe the Couch project and then discuss how the project was interwoven with the character of its author. I then discuss “Oh, What Webs Those Phantoms Spin” in the context of Carl's larger project and close with a brief discussion of New Iowa School research after Carl Couch.     

Modeling Social Processes: Some Lessons from Sports

Sports events can provide helpful models for thinking about social processes. DiMaggio's hitting streak in baseball, for example, raises serious questions about how the causes of relatively uncommon social events are typically studied. The hitting streak also directs our attention to considering models that generate a distribution of outcomes in a population of social units. The series of games leading to a football championship is relevant for approaching the role of complex chains of events in leading to a given outcome (where each individual sequence itself has a low probability of occurring). A model of changing templates suggests a more realistic way of thinking about the linkages over time from an initial starting point to a given outcome. Another sports example, based on the application of a binomial model to the outcome of a series of games, suggests that we should think of chance as a dependent variable that is influenced by—among other factors—the nature of the social structure. Also examined are the special problems in explaining any specific outcome.     

Integrating professional socialization and training for sociology graduate students

It is a curious contradiction that sociology, a discipline that includes in its subject matter socialization, norms, occupations, formal organization, the institution of education and the concept of the career does not necessarily prepare its products in a systematic and coherent manner to become trained professionals. Newly minted Ph.D.s must often learn by trial and error because we have left them adrift concerning how to conduct themselves as professional sociologists. Moreover, while these new Ph.D.s are usually trained well as scholarly researchers, many are not prepared for the non-research careers they will take as sociologists. When this happens, we sociologists, supposedly enlightened about such matters, have failed our students. This article is divided into two parts. The first is a critique of traditional graduate education in sociology. The second part plays off these criticisms by offering a coherent plan, consonant with the current and future possibilities for sociologists.     

The influence of anthropogenic resources on multi-scale habitat selection by raccoons

With the continuing spread of urban areas, gaining a greater understanding of the effect of human presence on wildlife species is essential for wildlife managers. We determined the influence of anthropogenic resources on home range size and habitat selection of raccoons (Procyon lotor) during summer (June–August) 1996–2000 for 120 raccoons at three sites exposed to varying levels of urbanization and anthropogenic resources, specifically food. Home range estimates were larger (P < 0.05) at the rural site than the suburban and urban sites for both genders. We used compositional analysis to examine raccoon habitat selection at the second-order home range, second-order core area, and third-order home range scales. Woodland was consistently a highly-selected habitat type for both sexes at every spatial scale. Relative to other habitat types, habitat associated with human-related food (human use areas) was selected most often at the urban site, intermediately at the suburban site, and not selected at the rural site. Spatial scale also affected habitat selection. Human use areas were preferentially selected at the second- and third-order level at the urban site, third-order level only at the suburban site, and at neither level at the rural site. Additionally, intersexual differences in habitat selection were reduced at the urban site, with both sexes preferentially selecting for human use areas as well as woodland habitat. Smaller home ranges in urbanized environments are often attributed to the abundant and concentrated anthropogenic resources associated with human activity, but with little empirical support. Our habitat selection analyses followed our predictions that raccoon foraging is strongly influenced by the artificial distribution and abundance of human-related food. Male and female raccoons in urban areas reduce their foraging patterns and focus their foraging activity on anthropogenic foods.     

Some New Regression Methods for Predictive and Construct Validation

Social Indicators Research -