Multivariate parabolic bioassay

A general linear model approach to quantitative parabolic bioassays with multivariate responses is proposed. The point and interval estimator of the relative potency and an associated test for validity is presented. The relationships with known univariate methods are illustrated.     

The Decline in Shared Collective Conscience as Found in the Shifting Norms and Values of Etiquette Manuals

In this article we address Emile Durkheim's theory that norms and values become more generalized and abstract in a society as it becomes more complex and differentiated. To test Durkheim's theory we examine etiquette manuals—the common texts that define normative manners and morals in American society. We perform a deductive content analysis on past and present etiquette manuals to understand what changes have occurred regarding shifting behavioral norms and values over time. Our findings suggest that a change has occurred in the presentation and language of contemporary etiquette manuals, reflecting a greater change in the normative order. We find—as Durkheim would expect—that three main shifts have occurred: a shift from specific to general expectations for behavior in social settings, a shift from demanding to more suggestive rules of behavior in social situations, and a weakening in the severity of sanctions for breaches of etiquette.     

Shift-and-persist coping and health among rural African American adolescents

This study examines whether shift-and-persist coping, a coping strategy defined by accepting challenges and remaining hopeful for the future, is associated with psychosocial and physical health and/or moderates the effects of contextual stress (i.e., racial discrimination, financial strain) on health among African American adolescents living in the rural Southeastern United States. Participants (N = 299, 56% boys, M_age = 12.91) completed measures of shift-and-persist coping, contextual stress, and psychosocial and physical health. Shift-and-persist coping was generally associated with better health but did not buffer the effects of contextual stress. Results suggest that shift-and-persist coping may serve as a source of resilience among African American adolescents living in a context where many experience heightened contextual stress.     

Neural mechanisms of language development in infancy

Understanding the neural processes underpinning individual differences in early language development is of increasing interest, as it is known to vary in typical development and to be quite heterogeneous in neurodevelopmental conditions. However, few studies to date have tested whether early brain measures are indicative of the developmental trajectory of language, as opposed to language outcomes at specific ages. We combined recordings from two longitudinal studies, including typically developing infants without a family history of autism, and infants with increased likelihood of developing autism (infant-siblings) (N = 191). Electroencephalograms (EEG) were recorded at 6 months, and behavioral assessments at 6, 12, 18, 24 and 36 months of age. Using a growth curve model, we tested whether absolute EEG spectral power at 6 months was associated with concurrent language abilities, and developmental change in language between 6 and 36 months. We found evidence of an association between 6-month alpha-band power and concurrent, but not developmental change in, expressive language ability in both infant-siblings and control infants. The observed association between 6-month alpha-band power and 6-month expressive language was not moderated by group status, suggesting some continuity in neural mechanisms.     

Youth Advisors Driving Action: hearing the youth voice in mental health systems of care

The Children's Mental Health Initiative (CMHI) is funded by the Center for Mental Health Services within the Substance Abuse and Mental Health Services Administration. CMHI assists communities in developing comprehensive, coordinated services for children with serious emotional disturbances and their families. Broadly speaking, these systems are designed to be child centered, youth guided, family driven, community based, and culturally competent. To assure implementation of the "youth-guided" core value in the national evaluation, an advisory group of youth coordinator/youth teams representing communities across the country was developed. This group chose the name YADA-Youth Advisors Driving Action. YADA has made a substantive contribution to national evaluation efforts by bringing the youth perspective and voice to its audience at the community and national levels. This article describes YADA's founding and development, as well as related implications for psychosocial nurses.     

Defining urban,suburban, and rural: a method to link perceptual definitions with geospatial measures of urbanization in central and eastern Massachusetts

Developing greater understandings of socio-ecological relationships across urbanizing areas is increasingly recognized as important for the conservation and management of natural resources in a variety of development contexts. Efforts to do so have been hindered by a lack of consistent measures of urbanization and the challenge of integrating socio-cultural characteristics into definitions of urban. We present a novel method for linking perceptual definitions of urban, suburban, and rural to geospatial characteristics and demonstrate how the method can be used to map urban, suburban, and rural areas at multiple scales in central and eastern Massachusetts. Our method can facilitate comparative approaches to urban ecology, be used to scale up socio-ecological studies, and inform conservation research and practice in urbanizing areas.