Sexual Behavior in China: Trends and Comparisons

Dramatic political, economic, and social changes in China over the past several decades have been accompanied by much discussion in popular media and among academics of a fundamental transformation in Chinese sexual behavior. Several studies have examined current Chinese sexual behavior but have been limited to particular provinces or cities and have been based on non‐random samples. The potential threat of a generalized HIV epidemic in China highlights the dearth of population‐based information on current patterns of sexual behavior that could help design better intervention strategies and prevent misguided ones. This article uses data from the first national probability survey of adult sexual behavior in China completed during 1999–2000, along with a historical and literature review, to address three key questions: 1) Has there been a revolution in sexual behavior in China? 2) Is China unique compared to other countries in these transformations? 3) What are the implications of these findings for China's risk of a generalized HIV epidemic?     

IS AGENCY THEORY SELF‐ACTIVATING?

This article examines the conditions under which the principal-agent model is self-activating/socially causal. We do so by exploring a principal-agent framework that allows for the possibility that rational agents may hold intrinsic preferences for autonomy in decision making and experience disutility from being monitored. Using a dynamic model of preference formation, we identify conditions under which the principal-agent model is self-activating in that, over time, the introduction of the model in an otherwise efficient monitor-worker relationship leads to the inefficient adoption of the agency model. We also examine the extent to which the agency model is robust when autonomy-preferring agents are introduced into the population. ( JEL G30, L20, C72)     

SPATIAL COMPETITION AND THE PRICE OF COLLEGE

This article provides the first evidence that universities compete directly on price, and that the market for students depends on the proximity of competitors. Exploiting detailed data from private U.S. universities, price competition is tested by introducing geographic proximity into a spatial-autoregressive tuition model. Standard spatial models show that list and net tuition are inversely related to distance between institutions, consistent with price competition in higher education. An extension to the spatial-econometrics literature relaxes a constraint that estimated spatial relationships are common across all observations, implying that spatial effects differ across qualitative classes of institutions . ( JEL C21, I2, L11)     

Public Accounts: Defending Contested Practices

Little attention has been paid to how actors account for controversial institutional conduct or contested practices. Relying on a content analysis of letters to the editor, I explore how actors operating in the Habermasian “public sphere” justify the contested practice of linking Native American symbols with sports teams, and suggest that in their rejection of challengers to their definitions of the situation, authors create public accounts. Consisting primarily of justifications rather than excuses, these accounts are of four types: “denial of injury,” “assertion of benefit,” “claim of authority,” and “rejection of challenge.” For those who wish to conduct comparative analyses of contested practices, these concepts may prove useful.     

Cryptosporidium and Dairy Cattle in the Catskill/Delaware Watershed: A Quantitative Risk Assessment

We carried out a study to estimate the public health risk posed by dairy cattle located in New York City's Catskill/Delaware watershed, as measured by daily C. parvum-like oocyst loading. A Monte Carlo simulation model that takes into account the nature of the dairy cattle population within the target area, age-specific incidence/prevalence rates, as well as differential fecal production and oocyst-shedding intensity rates was used to address the objectives. Additionally, the model was designed to distinguish between zoonotic and nonzoonotic species/genotypes of Cryptosporidium. Total estimated daily C. parvum-like oocyst shedding across all age/production categories was estimated at 4.15 x 10(10). The zoonotic C. parvum comprised 93.5% of this load. It was estimated that preweaned calves produce 99.5% of the total daily C. parvum ocyst burden. The recently described nonzoonotic C. bovis was estimated to have a daily load of 2.2 x 10(9) oocysts across all age/production strata. C. parvum deer-like genotype was estimated to have a total daily load of 1.3 x 10(9) oocysts. The results of this study support earlier assertions that strategies aimed at reducing the cryptosporidial risk posed by dairy cattle to public health will be most efficacious if aimed at preweaned calves.     

LEVIATHAN AT BAY: CONSTITUTIONAL VERSUS POLITICAL CONTROLS ON GOVERNMENT

I integrate constitutional constraints in a model of electoral control of politicians. Two types of politicians compete for office: angels, who never misuse power, and knaves, who abuse delegated power. Political theory suggests that constitutional constraints and elections are substitutes; I find a more complicated relationship. Elections sometimes substitute for constraints, while constraints complement and strengthen electoral controls based on politicians' payoffs. Elections must work perfectly to generally allow constraints to be dispensed with. Knaves might self-select out of politics with constitutional constraints, which consequently appear inconsistent with the observed character of politicians. ( JEL H1, D72)     

The treatment of strabismus in the four to ten year old child

Approximately 6% of children have strabismus, a condition where the eyes are not straight and do not work together. The condition is described and the problems created are discussed, including its effect on appearance and performance. Treatments available to correct strabismus and their success rates are presented. Most children can be treated effectively to restore normal appearance and binocular function.a Diplomate in Binocular Vision and Perception, American Academy of Optometry, Fellow, College of Optometrists in Vision Development, and in private practice, Garden City, New York.     

Fear of crime among vulnerable populations: Homeless women

Are the factors associated with the fear of crime in the general population the same as those operating with especially vulnerable subgroups? If not, how and why are they different? Previous studies concerning the fear of crime have identified certain vulnerability factors as being associated with higher levels of fear. These include, for instance, being female, living in certain ghetto areas, and being elderly. Because many of these studies focused upon fear in the general population, however, they assumed a certain homogeneity of fear, whether it be among women, among the elderly, among Blacks, etc. They failed to make distinctions based upon relative degrees of vulnerability. They also generally neglected the notion of fear management—of coping. This research addresses these concerns. Two hundred homeless women (defined here as homeless adult females living on the streets), were interviewed in New York City. Among other things, they were asked about their crime risks and their crime fears. Results indicate that fear of crime is higher among those street women who have suffered past victimization. It is also slightly higher among those who perceived themselves to be more vulnerable. Perhaps most interesting is the finding that there is only a low correlation between self-perceived vulnerability to victimization and the fear of crime. This supports the proposition that these are two distinctive concepts; and, most importantly, it does so in the context of a particularly vulnerable population. Possible explanations of a seemingly paradoxical situation, namely high vulnerability existing side by side with a low fear of crime, are explored and discussed.