Internationally, the Peer Change Agent (PCA) model is the most frequently used conceptual framework for HIV prevention. Change agents themselves can be more important than the messages they convey. PCA selection is operationalized via heterogeneous methods based upon individual-level attributes....

Scholars who study how social networks affect older adults' health are often concerned with the prospect of declining social connectedness in late life. This paper shifts the focus to older adults' tendencies to cultivate new social ties. This process of network growth can improve access to...

Despite limited HIV prevention potency, peer-based programs have become one of the most often used HIV prevention approaches internationally. These programs demonstrate a need for greater specificity in peer change agent (PCA) recruitment and social network evaluation. In the present three-phase...

If we can identify the kinds of people who are connected to persons in positions of authority (and those who are not), then we will know something reasonably concrete about at least the potential for influence. This study analyzes networks of relationships among urban lawyersÑin particular, by...

This paper compares findings from two surveys of Chicago lawyers, the first conducted in 1975 and the second in 1995. The earlier study indicated that the Chicago bar was then divided into two broad sectors or "hemispheres," one serving corporations and other large organizations and a second...

Dramatic political, economic, and social changes in China over the past several decades have been accompanied by much discussion in popular media and among academics of a fundamental transformation in Chinese sexual behavior. Several studies have examined current Chinese sexual behavior but have...