A Comparative Cancer Risk Evaluation of MTBE and Other Compounds (Including Naturally Occurring Compounds) in Drinking Water in New Hampshire

Methyl tert-butyl ether (MTBE) was added to gasoline in New Hampshire (NH) between 1995 and 2006 to comply with the oxygenate requirements of the 1990 Amendments to the Clean Air Act. Leaking tanks and spills released MTBE into groundwater, and as a result, MTBE has been detected in drinking water in NH. We conducted a comparative cancer risk assessment and a margin-of-safety (MOS) analysis for several constituents, including MTBE, detected in NH drinking water. Using standard risk assessment methods, we calculated cancer risks from exposure to 12 detected volatile organic compounds (VOCs), including MTBE, and to four naturally occurring compounds (i.e., arsenic, radium-226, radium-228, and radon-222) detected in NH public water supplies. We evaluated exposures to a hypothetical resident ingesting the water, dermally contacting the water while showering, and inhaling compounds volatilizing from water in the home. We then compared risk estimates for MTBE to those of the other 15 compounds. From our analysis, we concluded that the high-end cancer risk from exposure to MTBE in drinking water is lower than the risks from all the other VOCs evaluated and several thousand times lower than the risks from exposure to naturally occurring constituents, including arsenic, radium, and radon. We also conducted an MOS analysis in which we compared toxicological points of departure to the NH maximum contaminant level (MCL) of 13 µg/L. All of the MOSs were greater than or equal to 160,000, indicating a large margin of safety and demonstrating the health-protectiveness of the NH MCL for MTBE.     

Structural and Dynamic Process Family Risk Factors: Consequences for Holistic Adolescent Functioning

This study utilized a dynamic cumulative family risk model to explain changes in adolescent functioning. We used a person‐centered approach to detect patterns of academic, emotional, and behavioral functioning and the stability of these patterns using two waves of the National Longitudinal Study of Adolescent Health (N= 10,173). Four adjustment profiles emerged at both time points. Although most (91%) adolescents remained in the same classifications at both waves, some experienced shifts in functioning. Changes in family process risk factors predicted these shifts in adjustment, whereas changes in structural risk factors predicted stable adjustment. We concluded that even short‐term changes in family processes are significant sources of risk for some adolescents.     

Modeling the Development of Infant Categorization

Research on infant categorization has made remarkable progress since the first studies were reported in the late 1970s (e.g., Cohen & Caputo, 1978; Cohen & Strauss, 1977; Strauss, 1979). This progress is evident in a recent volume on early categorization and concept acquisition (Rakison & Oakes, 2003), the first half of which is devoted entirely to theory and research on infant categorization. Even in the early days of such research an important distinction was made between demonstration‐oriented studies and process‐oriented studies (Cohen & Younger, 1983; Younger & Cohen, 1985). Demonstration studies simply presented infants with established category items (by adult standards) such as pictures of stuffed animals, faces, dogs, cats, animals, or vehicles and examined whether infants would generalize their responding to novel members of the same category. Process studies, on the other hand, presented infants with novel categories and manipulated feature values of category items to examine the mechanisms underlying infant category acquisition.     

The Volunteer Citizen After Welfare Reform in the United States: An Ethnographic Study of Volunteerism in Action

In the United States, neoliberal strategies for social, economic, and state organization have been accompanied by frequent calls for volunteers to solve serious social problems. A case study of a community mobilization of middle-class volunteers to provide one-on-one support to families in poverty shows both possibilities and limitations. Volunteers provide social support to families in poverty, thus alleviating social isolation. Volunteers learn about systemic forces that cause poverty, its effects on families and communities, and about themselves and their capacities to engage in poverty work. However, social isolation is but one of many problems associated with poverty, and even a more knowledgeable amateur volunteer corps cannot take the place of substantial social, economic, and political change.     

Perceptions of students' locus of control of discipline among pre‐service and in‐service teachers in multicultural classrooms

The purpose of this study was to determine teacher perceptions of students' behavior/misbehavior in the classroom, and the differences between pre‐service and in‐service teachers' perceptions of students' locus of control of discipline (i.e. the source of discipline) in multicultural classrooms. The study also investigated perceptions in three related dimensions of discipline: motivation, mechanism and the basis of discipline. Furthermore, the study generated data to determine whether culture was perceived as a factor in teachers' perceptions of students' locus of control of behavior in the classroom. Findings were intended to assist in determining choices for appropriate intervention strategies for use in effective discipline or management of behavior in multicultural classrooms.     

Perception of family need in pediatric oncology

This paper studies the needs of a family in which a child has been diagnosed with cancer. The tasks of the family include meeting the physical and psychosocial needs of the child while attempting to maintain normal family functioning. Various psychological and social factors affect the outcome of medical treatment and the recovery process. The paper highlights the needs assessment as a tool in a comprehensive approach to service delivery.     

Balancing Safety and Privacy: The Case of Room Locks in Assisted Living

Assisted living settings are charged with protecting privacy and choice of residents while guaranteeing safety and providing services. This article uses qualitative data from seven distinct assisted living settings to illuminate the challenge of balancing these expectations to maximize quality of life for residents. The simple object of door locks serves as the focal point for narrative from residents, family, staff, and administrators regarding the daily dilemmas of balancing these goals. Results show that there is a lack of consensus on the relative importance of locks and security within and across groups and settings. As residents age in place, sustaining the balance is likely to become even more challenging.