A unified theory for generalized cyclic designs

Properties of abelian groups are used to unify the construction of cyclic and generalized cyclic designs. Necessary and sufficient conditions are obtained for the generation of fractional sets of blocks, and also for the generation of resolvable designs. It is shown how to apply these results in conjunction with efficiency arguments to obtain useful designs.     

Culturally Relevant Psychotherapy for Perinatal Depression in Low-Income Ob/Gyn Patients

To minimize barriers to care, ameliorate antenatal depression, and prevent postpartum depression in low-income women, we propose that a culturally relevant version of brief interpersonal psychotherapy (IPT-B) may be an effective approach. IPT-B is a modified form of Interpersonal Psychotherapy (IPT), an efficacious treatment for depression that we have altered to address the needs of women who have difficulty adhering to longer courses of psychotherapy. Culturally relevant additions to IPT-B include (1) a pre-treatment engagement strategy consisting of an ethnographic interview accompanied by psychoeducation to engage women in treatment; (2) convenient delivery of IPT-B in a public care Ob/Gyn clinic where the women receive prenatal services; (3) flexible scheduling of treatment sessions at the clinic or on the phone; and 4) facilitation of access to social services.     

An introduction to exponential random graph (p) models for social networks

This article provides an introductory summary to the formulation and application of exponential random graph models for social networks. The possible ties among nodes of a network are regarded as random variables, and assumptions about dependencies among these random tie variables determine the general form of the exponential random graph model for the network. Examples of different dependence assumptions and their associated models are given, including Bernoulli, dyad-independent and Markov random graph models. The incorporation of actor attributes in social selection models is also reviewed. Newer, more complex dependence assumptions are briefly outlined. Estimation procedures are discussed, including new methods for Monte Carlo maximum likelihood estimation. We foreshadow the discussion taken up in other papers in this special edition: that the homogeneous Markov random graph models of Frank and Strauss [Frank, O., Strauss, D., 1986. Markov graphs. Journal of the American Statistical Association 81, 832–842] are not appropriate for many observed networks, whereas the new model specifications of Snijders et al. [Snijders, T.A.B., Pattison, P., Robins, G.L., Handock, M. New specifications for exponential random graph models. Sociological Methodology, in press] offer substantial improvement.     

Stories of AIDS: The use of narrative as an approach to understanding in an AIDS support group

This paper shows how the co-creation and telling of narratives helped members of an AIDS support group transform their unique and separate experiences of suffering into shared insights, intense connections and comfort. Examples of narratives are drawn from the author's experience as a co-leader of a support group for gay men living with AIDS. Current literature on group work with persons living with AIDS is embedded in a modernist orientation in which the therapist is the scientist/expert, the client has the problem and the therapist helps the client's through exploring and interpreting the client's story according to a superseding theory (Gergen and Kaye, 1992). This approach emphasizes the need for leaders to maintain objectivity and emotional distance to avoid burnout (Gabriel, 1991; Grossman and Silverstein, 1993; Tunnell, 1991). In contrast, in a post-modern therapeutic approach, there is no privileging of the therapist's narrative and the traditional hierarchical relationship is replaced by a mutual effort as therapist and client together develop stories that translate and transcend experience. Using the AIDS work as illustration, this paper offers a post-modern, narrative approach to group work and shows how persons living with AIDS can use narrative to move beyond finite structures and the limits of life.This paper couldn't have been written without the help of the group members and my co-leader Sally Bowie. I want to thank them and other friends and colleagues-particularly the members of my Philosophy Study Group for their suggestions and support.The paper is dedicated to the memory of Jack, Paul, Mark, Alex, Richard, Hugh, Stan, Tim, Michael and Bill—all members of the group who have died and to Dean who, though not a member of the group, also died of AIDS and like the others—taught me much about dignity and courage, about being gay and about living with AIDS.     

The prevalence of surgical sterilization in a suburban population

This report presents data on the prevalence of tubal ligations, vasectomies and remedial sterilizing operations among white couples, with wife aged 20–54, who subscribe to a pre-paid medical care program and live in a suburban area near San Francisco. Contraceptive operations, more than two-thirds of which were male vasectomies, were found among 23 per cent of these couples. Some form of sterilizing surgery (contraceptive or remedial) was found among 31 per cent. The prevalence of surgical sterilization, specifically vasectomies, in this population is high compared with that found across the nation or in the Western states in the 1965 National Fertility Study. Variations in the prevalence of tubal ligations and vasectomies by parity, education and religion are described. Their prevalence increases with the parity of the wife, has a marked inverse relationship with education, and is highest when neither husband nor wife is Catholic.