Examining Interviewers’ Ratings of Respondents’ Health: Does Location in the Survey Matter for Interviewers’ Evaluations of Respondents?

Interviewers’ ratings of survey respondents’ health (IRH) are a promising measure of health to include in surveys as a complementary measure to self-rated health. However, our understanding of the factors contributing to IRH remains incomplete. This is the first study to examine whether and how it matters when in the interview interviewers evaluate respondents’ health in a face-to-face survey, in an experiment embedded in the UK Innovation Panel Study. We find that interviewers are more likely to rate the respondent’s health as “excellent” when IRH is rated at the end of the interview compared to the beginning. Drawing from the continuum model of impression formation, we examined whether associations between IRH and relevant covariates vary depending on placement in interview. We find that across several characteristics of interviewers and respondents, only the number of interviews completed by interviewers varies by IRH assessment location in its effect on IRH. We also find evidence that interviewer variance is lower when IRH is assessed prior to compared to after the interview. Finally, the location of IRH assessment does not impact the concurrent or predictive validity of IRH. Overall, the results suggest that in a general population study with some health questions, there may be benefits to having interviewers rate respondents’ health at the beginning of the interview (rather than at the end as in prior research) in terms of lower interviewer variance, particularly in the absence of interviewer training that mitigates the impact of within-study experience on IRH assessments

The Effects of Features of Survey Measurement on Self-Rated Health: Response Option Order and Scale Orientation

Self-rated health (SRH) is widely used to study health across a range of disciplines. However, relatively little research examines how features of its measurement in surveys influence respondents’ answers and the overall quality of the resulting measurement. Manipulations of response option order and scale orientation are particularly relevant to assess for SRH given the increasing prominence of web-based survey data collection and since these factors are often outside of the control of the researcher who is analyzing data collected by other investigators. We examine how the interplay of two features of SRH influence respondents’ answers in a 2-by-3 factorial experiment that varies (1) the order in which the response options are presented (“excellent” to “poor” or “poor” to “excellent”) and (2) the orientation of the response option scale (vertical, horizontal, or banked). The experiment was conducted online using workers from Amazon Mechanical Turk (N = 2945). We find no main effects of response scale orientation and no interaction between response option order and scale orientation. However, we find main effects of response option order: mean SRH and the proportion in “excellent” or “very good” health are higher (better) and the proportion in “fair” or “poor” health lower when the response options are ordered from “excellent” to “poor” compared to “poor” to “excellent.” We also see heterogeneous treatment effects of response option ordering across respondents’ characteristics associated with ability. Overall, the implications for the validity and cross-survey comparability of SRH are likely considerable for response option ordering and minimal for scale orientation

Triggering social interactions:chimpanzees respond to imitation by a humanoid robot and request responses from it

Even the most rudimentary social cues may evoke affiliative responses in humans and promote socialcommunication and cohesion. The present work tested whether such cues of an agent may also promotecommunicative interactions in a nonhuman primate species, by examining interaction-promoting behavioursin chimpanzees. Here, chimpanzees were tested during interactions with an interactive humanoid robot, whichshowed simple bodily movements and sent out calls. The results revealed that chimpanzees exhibited twotypes of interaction-promoting behaviours during relaxed or playful contexts. First, the chimpanzees showedprolonged active interest when they were imitated by the robot. Second, the subjects requested ‘social’responses from the robot, i.e. by showing play invitations and offering toys or other objects. This study thusprovides evidence that even rudimentary cues of a robotic agent may promote social interactions inchimpanzees, like in humans. Such simple and frequent social interactions most likely provided a foundationfor sophisticated forms of affiliative communication to emerge

Spatial changes in soil stable isotopic composition in response to carrion decomposition

Decomposition provides a critical mechanism for returning nutrients to the surrounding environment. In terrestrial systems, animal carcass, or carrion, decomposition results in a cascade of biogeochemical changes. Soil microbial communities are stimulated, resulting in transformations of carbon (C) and nitrogen (N) sourced from the decaying carrion soft tissues, changes to soil pH, electrical conductivity, and oxygen availability as microbial communities release CO2 and mineralize organic N. While many of the rapid changes to soil biogeochemistry observed during carrion decomposition return to background or starting conditions shortly after soft tissues are degraded, some biogeochemical parameters, particularly bulk soil stable δ15N isotopic composition, have the potential to exhibit prolonged perturbations, extending for several years. The goal of this study was to evaluate the lateral and vertical changes to soil stable isotopic composition 1 year after carrion decomposition in a forest ecosystem. Lateral transects extending 140 cm from three decomposition “hotspots” were sampled at 20 cm intervals, and subsurface cores were collected beneath each hotspot to a depth of 50 cm. Bulk soil stable isotopic composition (δ15N and δ13C) indicated that 1 year after complete soft tissue removal and decay, soils were significantly 15N enriched by 7.5±1.0 ‰ compared to control soils up to 60 cm from the hotspot center, and enrichment extended to a depth of 10 cm. Hotspot soils also contained 10 % more N compared to control soils, indicating that decomposition perturbs N pools. Our results demonstrate that carrion decomposition has the potential to result in long-term changes to soil biogeochemistry, up to at least 1 year after soft tissue degradation, and to contribute to bulk soil stable isotopic composition

Disrupting Ovarian Cancer Metastatic Colonization: Insights from Metastasis Suppressor Studies

Ovarian cancer affects approximately 25,000 women in the United States each year and remains one of the most lethal female malignancies. A standard approach to therapy is surgical cytoreduction, after which the remaining microscopic residual disease is treated with chemotherapy. The vast majority of patients have disease recurrence, underscoring the crucial need for approaches to control the regrowth, or colonization, of tissues after local treatment. Improved therapies require mechanistic information about the process of metastatic colonization, the final step in metastasis, in which cancer cells undergo progressive growth at secondary sites. Studies of metastasis suppressors are providing insights into events controlling metastatic colonization. This paper reviews our laboratory's approach to the identification, characterization, and functional testing of the JNKK1/MKK4 metastasis suppressor in ovarian cancer metastatic colonization. Specifically, we demonstrate that interaction of ovarian caner cells with the omental microenvironment activates JNKK1/MKK4 resulting in decreased proliferation without affecting apoptosis. The potential role of the omental microenvironment, specifically milky spot structures, is also described. It is our goal to provide this work as a usable paradigm that will enable others to study metastasis suppressors in clinical and experimental ovarian cancer metastases

Interviewers’ Ratings of Respondents’ Health: Predictors and Association With Mortality

Objectives Recent research indicates that survey interviewers’ ratings of respondents’ health (IRH) may provide supplementary health information about respondents in surveys of older adults. Although IRH is a potentially promising measure of health to include in surveys, our understanding of the factors contributing to IRH remains incomplete. Methods We use data from the 2011 face-to-face wave of the Wisconsin Longitudinal Study, a longitudinal study of older adults from the Wisconsin high school class of 1957 and their selected siblings. We first examine whether a range of factors predict IRH: respondents’ characteristics that interviewers learn about and observe as respondents answer survey questions, interviewers’ evaluations of some of what they observe, and interviewers’ characteristics. We then examine the role of IRH, respondents’ self-rated health (SRH), and associated factors in predicting mortality over a 3-year follow-up. Results As in prior studies, we find that IRH is associated with respondents’ characteristics. In addition, this study is the first to document how IRH is associated with both interviewers’ evaluations of respondents and interviewers’ characteristics. Furthermore, we find that the association between IRH and the strong criterion of mortality remains after controlling for respondents’ characteristics and interviewers’ evaluations of respondents. Discussion We propose that researchers incorporate IRH in surveys of older adults as a cost-effective, easily implemented, and supplementary measure of health

Apes communicate about absent and displaced objects: methodology matters

Displaced reference is the ability to refer to an item that has been moved (displaced) in space and/or time, and has been called one of the true hallmarks of referential communication. Several studies suggest that nonhuman primates have this capability, but a recent experiment concluded that in a specific situation (absent entities) human infants display displaced reference but chimpanzees do not. Here we show that chimpanzees and bonobos of diverse rearing histories are capable of displaced reference to absent and displaced objects. It is likely that some of the conflicting findings from animal cognition studies are due to relatively minor methodological differences, but are compounded by interpretation errors. Comparative studies are of great importance in elucidating the evolution of human cognition, however, greater care must be taken with methodology and interpretation for these studies to accurately reflect species differences

Response Times as an Indicator of Data Quality: Associations with Interviewer, Respondent, and Question Characteristics in a Health Survey of Diverse Respondents

Survey research remains one of the most important ways that researchers learn about key features of populations. Data obtained in the survey interview are a collaborative achievement accomplished through the interplay of the interviewer, respondent, and survey instrument, yet our field is still in the process of comprehensively documenting and examining whether, when, and how characteristics of interviewers, respondents, and questions combine to influence the quality of the data obtained. Researchers tend to consider longer response times as indicators of potential problems as they indicate longer processing or interaction from the respondent, the interviewer (where applicable), or both. Previous work demonstrates response times are associated with various characteristics of interviewers (where applicable), respondents, and questions across web, telephone, and face-to-face interviews. However, these studies vary in the characteristics considered, limited by the characteristics available in the study at hand. In addition, features of the survey interview situation have differential impact on responses from respondents in different racial, ethnic, or other socially defined cultural groups, potentially increasing systematic error and compromising researchers’ ability to make group comparisons. As examples, certain question characteristics or interviewer characteristics may have differential effects across respondents from different racial or ethnic groups (Johnson, Shavitt, and Holbrook 2011; Warnecke et al., 1997). The purpose of the current study is to add to the corpus of existing work to examine how response times are associated with characteristics of interviewers, respondents, and questions, focusing on racially diverse respondents answering questions about trust in medical researchers, participation in medical research, and their health participation. Data are provided by the 2013-2014 “Voices Heard” survey, a computer-assisted telephone survey designed to measure respondents’ perceptions of barriers and facilitators to participating in medical research. Interviews (n=410) were conducted with a quota sample of respondents nearly equally distributed into across the following subgroups: white, black, Latino, and American Indian

Chapter 18: Response Times as an Indicator of Data Quality: Associations with Question, Interviewer, and Respondent Characteristics in a Health Survey of Diverse Respondents. Appendix 18

Appendix 18A Description of individual question characteristics and hypotheses for their relationship with RTs Appendix 18B Description of established tools for evaluating questions and hypotheses for their relationship with RTs Appendix 18C Sample Description Table 18.C1. Number of completed interviews by respondents’ race/ethnicity and sample Appendix 18D Additional Tables Appendix 18E Reference