6. Extensions of Respondent-Driven Sampling: Analyzing Continuous Variables and Controlling for Differential Recruitment

2007 ◽  
Vol 37 (1) ◽  
pp. 151-208 ◽  
Author(s):  
Douglas D. Heckathorn

Respondent-driven sampling (RDS) is a network-based method for sampling hidden and hard-to-reach populations that has been shown to produce asymptotically unbiased population estimates when its assumptions are satisfied. This includes resolving a major concern regarding bias in chain-referral samples—that is, producing a population estimate that is independent of the seeds (initial subjects) with which sampling began. However, RDS estimates are limited to nominal variables, and one of the assumptions required for the proof of lack of bias is the absence of differential recruitment. One aim of this paper is to analyze the role of differential recruitment, quantify the bias it produces, and propose a new estimator that controls for it. The second aim is to extend RDS so that it can be employed to analyze continuous variables in a manner that controls for differential recruitment. The third aim is to describe means for carrying out multivariate analyses using RDS data. The analyses employ data from an RDS sample of 264 jazz musicians in the greater New York metropolitan area, taken in 2002.

2017 ◽  
Vol 19 (2) ◽  
pp. 43
Author(s):  
Raluca Buturoiu

Moshe’s book entitled Temporal Love. Temporality and Romantic Relationships deals with a classical but fashionable part of sociological studies, namely the sociology of emotions. As the third in a series dealing with this challenging topic, the book is a valid proof for Moshe’s interest in how emotions develop and influence various aspects of people’s lives. In an era which “enables us to perceive different time dimensions simultaneously” (p. vii), the author aims at addressing the role of time in shaping both people’s ideas about romantic relationships and the relationships themselves.


Author(s):  
Nan Sook Park ◽  
Yuri Jang ◽  
David A. Chiriboga ◽  
Soondool Chung

The purpose of this study was to examine the correlates of depressive symptoms among older Korean adults in three geographic locations with varying densities of the Korean population: mainland Korea (mostly Koreans), New York metropolitan area (high Korean density), and west central Florida (low Korean density). The study focused on the role of family and friend networks. Data were drawn from three sources: (1) a multistage national sample of Koreans in South Korea ( n = 403); (2) a survey conducted in the western/central Florida area that used a variety of culturally sensitive sampling strategies ( n = 672); and (3) a survey in the New York metropolitan area ( n = 420) that replicated the Florida study. For those living in Korea, living alone and lower perceived financial status were independently associated with higher levels of depressive symptoms. For the New York and Florida samples, fair or poor self-rating of health, lower levels of acculturation, and weaker ties with family were related to higher levels of depressive symptoms. Similar to the older Korean sample, lower perceived financial status was linked with greater depressive symptoms in the New York sample. The overall results suggest that it is important to consider the interplay of the social network, personal, and cultural resources when working with older adults in diverse contexts. Intervention efforts should address mental health issues tailored to cultural and social settings.


2016 ◽  
Vol 48 (1) ◽  
pp. 3-33 ◽  
Author(s):  
Yongren Shi ◽  
Christopher J. Cameron ◽  
Douglas D. Heckathorn

Respondent-driven sampling (RDS), a link-tracing sampling and inference method for studying hard-to-reach populations, has been shown to produce asymptotically unbiased population estimates when its assumptions are satisfied. However, some of the assumptions are prohibitively difficult to reach in the field, and the violation of a crucial assumption can produce biased estimates. We compare two different inference approaches: design-based inference, which relies on the known probability of selection in sampling, and model-based inference, which is based on models of human recruitment behavior and the social context within which sampling is conducted. The advantage of the latter approach is that when the violation of an assumption has been shown to produce biased population estimates, the model can be adjusted to more accurately reflect actual recruitment behavior, and thereby control for the source of bias. To illustrate this process, we focus on three sources of bias, differential effectiveness of recruitment, a form of nonresponse bias, and bias resulting from status differentials that produce asymmetries in recruitment behavior. We first present diagnostics for identifying types of bias and then present new forms of a model-based RDS estimator that controls for each type of bias. In this way, we show the unique advantages of a model-based estimator.


Author(s):  
Doran George

This chapter looks at the relationship between Somatics training and the concert stage where its influence on dancers was increasingly evident. Focusing on New York City specifically, the chapter identifies three phases where Somatics impacted performance differently: first, as signaling the dancer’s real-time efforts to construct the dance in performance; second, as providing novel sources of movement; and third, as displaying a new standard of virtuosity. The chapter shows how in each of these phases the relationship of the choreographer to the performer shifted. In the first phase the choreographer and dancer were one and the same, processing the dance in real time, and this was seen as a radical alternative to midcentury modernist approaches in which the dancers showcased the choreographer’s vision. In the second phase, dancers deployed Somatics to demonstrate new vocabularies of movement and new ways of moving, not so much as a way to focus on dance making as to establish their unique artistic voices. In the third phase, the role of the choreographer was restored as the author of the dance, separate from the dancers, who then displayed the choreographer’s vision.


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