Advancing the Measurement of Violence: Challenges and Opportunities

Our understanding of the causes and consequences of violence depends on accurately defining and measuring the constructs we study. Although the methods used most often in violence research have led to a wealth of important findings, the field is ripe for both reflection and innovation. The purpose of this special issue is to highlight critical measurement issues in the study of violence and to describe innovative approaches that will move this research forward. In this Introduction to the special issue, we identify 3 challenges for the valid measurement of violence—defining constructs, accurately capturing responses in scoring, and diversifying measurement methods—and discuss how the 8 studies that constitute the issue address these challenges and identify promising directions for future work

Questions and Answers About the National Survey of Children\u27s Exposure to Violence.

Presents an overview of the National Survey of Children\u27s Exposure to Violence (NatSCEV), the most comprehensive nationwide survey to date of the incidence and prevalence of children\u27s exposure to violence, sponsored by OJJDP and the Centers for Disease Control and Prevention and carried out by the Crimes Against Children Research Center of the University of New Hampshire. It outlines the survey’s objectives and key features, how exposure to violence was measured, and plans for followup surveys and publications. NatSCEV bases its estimates on a large, nationally representative sample of more than 4,500 children ages 17 and younger. The survey interviewed caregivers of children ages 9 and younger and children and youth ages 10 to 17 about 45 different kinds of violence, abuse, and victimization in the past year and over the course of their lifetime

FIRM-LEVEL HEDONIC ANALYSIS OF U.S. PRODUCED SURIMI: IMPLICATIONS FOR PROCESSORS AND RESOURCE MANAGERS

Firm-level data on U.S. produced surimi, the only seafood product that is graded on the objective measurement of several quality characteristics, are used to estimate the effect of production variables (e.g., hours between harvest and processing) and policy variables (e.g., fishing seasons) on product characteristics. Transactions data are then used to estimate hedonic equations and derive implicit prices for each characteristic of surimi used to produce seafood analogs and traditional products in the U.S. and Japanese markets, respectively. Implicit prices are also estimated for surimi grade, production location (onshore, at-sea), and production date. Results indicate that several factors (including species) significantly affect surimi characteristics. Color and gel strength have the largest price impact, and market conditions alter the relative prices associated with improving certain characteristics. Overall results demonstrate that management decisions that affect fish quality—and, therefore, processed product quality and price—directly affect the wholesale value of the fishery.Resource /Energy Economics and Policy,

Hey, Mr. Greenspan, can you spare a dollar?

Money ; Dollar ; Latin America

A study of video frame rate on the perception of moving imagery detail

The rate at which each frame of color moving video imagery is displayed was varied in small steps to determine what is the minimal acceptable frame rate for life scientists viewing white rats within a small enclosure. Two, twenty five second-long scenes (slow and fast animal motions) were evaluated by nine NASA principal investigators and animal care technicians. The mean minimum acceptable frame rate across these subjects was 3.9 fps both for the slow and fast moving animal scenes. The highest single trial frame rate averaged across all subjects for the slow and the fast scene was 6.2 and 4.8, respectively. Further research is called for in which frame rate, image size, and color/gray scale depth are covaried during the same observation period

Strengths, Narrative, and Resilience: Restorying Resilience Research

Objective: To envision a path toward a more strengths-based approach to violence research, prevention, and intervention—a path that focuses on thriving and resilience. Key Points: Both the content and the process of research need to change if we are to transform our efforts to understand and overcome adversity. Greater focus on strengths and the achievement of well-being despite adversity is 1 important avenue; focusing on the narrative and the power of story is another important path. However, merely shifting the focus of traditional research and scholarly efforts is not enough. At another level of analysis, the field needs communication across the fragmentary subdisciplines of social science (“silo busting,” as we informally call it). We must also do more to encourage experimentation and innovation with regard to research question and design, community–practitioner–researcher partnership, and approaches to dissemination. Implications: Existing challenges in innovation and experimentation call for trying new approaches. Specific suggestions for adapting conference formats are provided. The commentaries in this special section offer feasible actions that could improve violence research, including incorporating measures of well-being in addition to symptoms as outcome measures; involving a wider variety of stakeholders in research design and dissemination; taking advantage of new insights from positive psychology and narrative research; and incorporating aspects of community and culture into research, assessment, prevention and intervention

The effects of video compression on acceptability of images for monitoring life sciences experiments

Future manned space operations for Space Station Freedom will call for a variety of carefully planned multimedia digital communications, including full-frame-rate color video, to support remote operations of scientific experiments. This paper presents the results of an investigation to determine if video compression is a viable solution to transmission bandwidth constraints. It reports on the impact of different levels of compression and associated calculational parameters on image acceptability to investigators in life-sciences research at ARC. Three nonhuman life-sciences disciplines (plant, rodent, and primate biology) were selected for this study. A total of 33 subjects viewed experimental scenes in their own scientific disciplines. Ten plant scientists viewed still images of wheat stalks at various stages of growth. Each image was compressed to four different compression levels using the Joint Photographic Expert Group (JPEG) standard algorithm, and the images were presented in random order. Twelve and eleven staffmembers viewed 30-sec videotaped segments showing small rodents and a small primate, respectively. Each segment was repeated at four different compression levels in random order using an inverse cosine transform (ICT) algorithm. Each viewer made a series of subjective image-quality ratings. There was a significant difference in image ratings according to the type of scene viewed within disciplines; thus, ratings were scene dependent. Image (still and motion) acceptability does, in fact, vary according to compression level. The JPEG still-image-compression levels, even with the large range of 5:1 to 120:1 in this study, yielded equally high levels of acceptability. In contrast, the ICT algorithm for motion compression yielded a sharp decline in acceptability below 768 kb/sec. Therefore, if video compression is to be used as a solution for overcoming transmission bandwidth constraints, the effective management of the ratio and compression parameters according to scientific discipline and experiment type is critical to the success of remote experiments

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Agribusiness,

Choosing and Using Child Victimization Questionnaires.

Youth service professionals are increasingly expected to monitor local child victimization trends and evaluate the effectiveness of prevention and treatment programs. The use of questionnaires to measure victimization can elicit considerable data, but which questionnaires are best suited to address which needs? This Bulletin notes several benefits deriving from the use of standardized questionnaires. Specific guidelines are provided to help the reader determine the type of victimization to be measured, how the questionnaire should be administered, whether the results need to correspond to crime and child protection categories, what period of time is being measured, what the children’s ages are, and whether the results will be compared with national norms. Specific questionnaires are reviewed, and recommendations for further reading are offered. In the wake of increased public attention to the victimization of children and adolescents, the need for solid information has never been greater. Standardized questionnaires are important tools to accurately measure child victimization. Fortunately, many types of questionnaires are available, and the information that this Bulletin provides should assist you in determining which questionnaire will best meet your needs

Beyond Collective Efficacy: New Brief Measures to Assess the Outer Layers of the Social Ecology

Abstract Introduction: Community support can be a valuable interpersonal resource anywhere, yet past research has largely been focused on adults in urban neighborhoods. Because communities are no longer solely defined by a shared physicality, we offer psychometric data on three new measures to assess other communal resources: informal community support, support for community youth, and workplace integration. Methods: Participants (N=1706) from a largely rural, low-income Southern region completed a computer-assisted questionnaire as part of a larger study on character development and personal strength. Ages range from 11 to 70 years old (M=29.3 years; SD=12.3 years); 63% of participants are female. Results: Internal consistency was good for our 3 new measures, .70 to .86 and each scale comprised a single factor in exploratory factor analyses. Correlations with collective efficacy (convergent validity) were all positive and significant and range from .18 to .57. Correlations with measures of subjective well-being range from .21 to .29, and correlations with mental and physical health outcomes ranged from .14 to .23. Implications: Studying communities in addition to individuals and families can potentially shed light on the variety of ways in which community ties can foster well-being and resilience. The three new measures presented here assess important but understudied aspects of communities