Consumer-Phase Salmonella enterica serovar Enteritidis Risk Assessment for Egg-Containing Food Products

We describe a one-dimensional probabilistic model of the role of domestic food handling behaviors on salmonellosis risk associated with the consumption of eggs and egg-containing foods. Six categories of egg-containing foods were defined based on the amount of egg contained in the food, whether eggs are pooled, and the degree of cooking practiced by consumers. We used bootstrap simulation to quantify uncertainty in risk estimates due to sampling error, and sensitivity analysis to identify key sources of variability and uncertainty in the model. Because of typical model characteristics such as nonlinearity, interaction between inputs, thresholds, and saturation points, Sobol's method, a novel sensitivity analysis approach, was used to identify key sources of variability. Based on the mean probability of illness, examples of foods from the food categories ranked from most to least risk of illness were: (1) home-made salad dressings/ice cream; (2) fried eggs/boiled eggs; (3) omelettes; and (4) baked foods/breads. For food categories that may include uncooked eggs (e.g., home-made salad dressings/ice cream), consumer handling conditions such as storage time and temperature after food preparation were the key sources of variability. In contrast, for food categories associated with undercooked eggs (e.g., fried/soft-boiled eggs), the initial level of Salmonella contamination and the log10 reduction due to cooking were the key sources of variability. Important sources of uncertainty varied with both the risk percentile and the food category under consideration. This work adds to previous risk assessments focused on egg production and storage practices, and provides a science-based approach to inform consumer risk communications regarding safe egg handling practices.     

Current Directions in Risk Research: New Developments in Psychology and Sociology

This article reviews the main approaches to risk in psychology and sociology and considers recent developments. It shows that research continues from a wide range of perspectives. Some developments in psychological thinking have recently acknowledged the importance of the cultural framing of risk perceptions and responses and the positive power of emotions to manage uncertainties, while some streams of work in sociology have moved toward more individualist approaches. These converging processes open opportunities for cross-fertilization and for using insights from both disciplines in the development of research.     

The Development of Anticipatory Smiling

When do infants begin to communicate positive affect about physical objects to their social partners? We examined developmental changes in the timing of smiles during episodes of initiating joint attention that involved an infant gazing between an object and a social partner. Twenty‐six typically developing infants were observed at 8, 10, and 12 months during the Early Social‐Communication Scales, a semistructured assessment for eliciting initiating joint attention and related behaviors. The proportion of infant smiling during initiating joint attention episodes did not change with age, but there was a change in the timing of the smiles. The likelihood of infants smiling at an object and then gazing at the experimenter while smiling (anticipatory smiling) increased between 8 and 10 months and remained stable between 10 and 12 months. The increase in the number of infants who smiled at an object and then made eye contact suggests a developing ability to communicate positive affect about an object.     

A Rank-Sum-Type Test for Paired Data with Multiple Endpoints

Clinical trials and other types of studies often examine the effects of a particular treatment or experimental condition on a number of different response variables. Although the usual approach for analysing such data is to examine each variable separately, this can increase the chance of false positive findings. Bonferroni's inequality or Hotelling's T² statistic can be employed to control the overall type I error rate, but these tests generally lack power for alternatives in which the treatment improves the outcome on most or all of the endpoints. For the comparison of independent groups, O'Brien (1984) developed a rank-sum type test that has greater power than the Bonferroni and T² procedures when one treatment is uniformly better (i.e. for all endpoints) than the other treatment(s). In this paper we adapt the rank-sum test to studies involving paired data and demonstrate that it, too, has power advantages for such alternatives. Simulation results are described, and an example from a study measuring the effects of sleep loss on glucose metabolism is presented to illustrate the methodology.     

Establishing self and meaning in low back pain narratives

Pain narratives encounter the problem of verbalising private and internalised experiences. Words appear to fall short of giving meaning to the feelings and impact of pain. In this paper we report on how people describe their low back pain and the way in which they claim to present this to clinicians. In the research interviews they need to establish themselves as believable narrators and provide accounts of how they legitimise their pain in clinical encounters. As a result, the interviews provide complex and layered narratives of pain and its representation.     

Exit Discrimination in the NBA: A Duration Analysis of Career Length

Using a panel study of annual NBA data (1989–99) we do not find evidence of exit discrimination on career length in the NBA. This result is inconsistent with results from data in the 1980s but is consistent with more recent findings that have measured wage discrimination in sports in the 1990s. In our semiparametric duration analysis, we find that performance variables are important in determining career length. These results suggest that team owners in the pursuit of championships keep talented players regardless of race. This is an affirmation of Becker's theoretical implications of market competition on discrimination. (JEL J71 , J23 )     

Fitting In and Fighting Back: Stigma Management Strategies among Homeless Kids

Using data collected during a four‐year ethnographic study, this article examines the stigma management strategies of kids who are homeless in the San Francisco Bay area. We focus specifically on strategies of inclusion and exclusion. Strategies of inclusion are attempts by homeless kids to establish harmonious relationships with both peers and strangers. The most common are forging friendships, passing, and covering. Strategies of exclusion are aggressive and nonconciliatory attempts to gain social acceptance. They include verbal denigration and physical and sexual posturing. Some of these strategies successfully protect the kids’ sense of self, while other strategies had the unintended effect of reinforcing their spoiled identities. We argue that these stigma management strategies are both informed by and interpreted through their disadvantaged social structural location.     

Ethnicity as cognition

This article identifies an incipient and largely implicit cognitive turn in the study of ethnicity, and argues that it can be consolidated and extended by drawing on cognitive research in social psychology and anthropology. Cognitive perspectives provide resources for conceptualizing ethnicity, race, and nation as perspectives on the world rather than entities in the world, for treating ethnicity, race, and nationalism together rather than as separate subfields, and for re-specifying the old debate between primordialist and circumstantialist approaches.