Child protection and research: understanding the messages

This paper contributes to the debate which has followed publication of the recent Department of Health research in child protection. From the viewpoint of one of the researchers, it surveys the criticisms presented by Nigel Parton (Parton 19%). It suggests that the problems he identifies are not irresolvable, and that improve-ments in social work policy and practice are feasible, as long as the stance taken by the researchers is correctly understood.     

TESTING FOR CONTINUOUS LOCAL MARTINGALES USING THE CROSSING TREE

We present statistical tests for the continuous martingale hypothesis; that is, for whether an observed process is a continuous local martingale, or equivalently a continuous time‐changed Brownian motion. Our technique is based on the concept of the crossing tree. Simulation experiments are used to assess the power of the tests, which is generally higher than that of recently proposed tests using the estimated quadratic variation (i.e. realized volatility). In particular, the crossing tree shows significantly higher power with shorter data sets. We then show results from applying the methodology to five high‐frequency currency exchange rate data sets from 2003. For four of them we show that at small time‐scales (less than 15 minutes or so) the continuous martingale hypothesis is rejected, but not so at larger time‐scales. For the fifth, the hypothesis is rejected at small time‐scales and at some moderate time‐scales, but not all.     

The Emergent Organization: Improvisation and Order in Gulf Coast Disaster Relief

This article employs the interactionist concept of emergence to explore volunteer behavior in organizational settings after natural disasters. Through a several‐year ethnographic study of volunteer relief groups in the Post‐hurricane Gulf Coast, I examine how emergent social groups navigate situations where interactional norms, practices, and procedures are ambiguous, unclear, or in continual flux. Grassroots volunteer groups improvised organizational decision‐making and leadership structures to develop timely and appropriate responses to the post‐disaster environment. In particular, I focus on two distinct groups of volunteers whose response to these emergent interactional structures: improvisers embraced the ambiguity of group norms as an opportunity to innovate and express their creativity, whereas ritualists rejected the lack of structure and order characterized by the volunteer organizations.     

GIS technology and survey sampling methods: The Khayelitsha/Mitchell's plain 2000 survey

This paper explores the entwining of city and song with a focus on the genre of isicathamiya in the city of Pietermaritzburg. It argues that the making of song involves the shaping of new subjectivities and it looks in particular at the role of isicathamiya performance in the making and re‐making of a particular urban space. It argues that the life and history of a city or town holds within it the songs and singers that shape it culturally and thus write themselves into the memory and being of the place. The paper searches for a new cultural topography of place that embraces this view. It situates a study of two isicathamiya groups, the Washing Boys and Naughty Boys, within a study of the life of the changing and suffering city and argues that the resilience of the genre and of its singers gives it a unique place as an interpretive voice in the New Era of post‐1994 and in the Pietermaritzburg of the present.     

Measuring the Psychobiological Correlates of Daily Experience in Adolescents

Mapping the psychobiological correlates of social contexts, experiences, and emotional responses of adolescents in their daily lives provides insight into how adolescent well‐being shapes, and is shaped by, experience. Measures of these psychobiological correlates are enabled by devices and technologies that must be precise and suitable for adolescent participants. The present report reviews the most often used research measures, and suggests strategies for best practice, drawn from practical experience. The rapid advances in technological methods to collect attuned measures of psychological processes, social context, and biological function indicate the promise for multimodal measures in ecological settings. Attaining these methodological goals will support research to secure comprehensive, quality data, and advance the understanding of psychobiological function in ambulatory settings.