Simultaneous Analysis of Individual and Aggregate Responses in Psychometric Data Using Multilevel Modeling

Psychometric data on risk perceptions are often collected using the method developed by Slovic, Fischhoff, and Lichtenstein, where an array of risk issues are evaluated with respect to a number of risk characteristics, such as how dreadful, catastrophic or involuntary exposure to each risk is. The analysis of these data has often been carried out at an aggregate level, where mean scores for all respondents are compared between risk issues. However, this approach may conceal important variation between individuals, and individual analyses have also been performed for single risk issues. This paper presents a new methodological approach using a technique called multilevel modelling for analysing individual and aggregated responses simultaneously, to produce unconditional and unbiased results at both individual and aggregate levels of the data. Two examples are given using previously published data sets on risk perceptions collected by the authors, and results between the traditional and new approaches compared. The discussion focuses on the implications of and possibilities provided by the new methodology.     

Building a legacy of volunteers through servant leadership: A cause‐related sporting event

This study explores the leadership style of the founder of a cause‐related sporting event and investigates the effects of this style on motivating volunteers. The National Kidney Foundation Surf Festival, established more than twenty‐five years ago to benefit people with kidney disease, was selected as an extreme case because of the event's longevity and success. Data were collected through semi‐structured personal interviews, document analysis, and personal observation. Results indicated that the founder is a servant leader. Three key themes of servant leadership, and its influence on volunteer motivation, emerged from the data: generating a shared vision dedicated to helping others, building a caring and loving community, and creating the freedom and resources for followers to become servants themselves. Our findings also indicated that the spiritual and moral tenets of servant leadership are applicable to secular nonprofit organizations.     

Quantification of hand grasp force using a pressure mapping system

The goal of this study was to use a pressure sensor to measure the force distribution and contact area of the hand when gripping, pushing, and pulling a cylinder. Data was collected from 10 subjects with no hand impairments and from 1 subject with rheumatoid arthritis (RA). Subjects grasped an aluminum cylinder wrapped with a Tekscan pressure sensor and performed each trial at 25%, 50%, and 100% maximum voluntary exertion. A relationship was found between increasing exertion and increasing hand area with increasing hand contact area. The force distribution maps showed the thenar region of the hand exerts the most force during pushing while the metacarpal joint line exerts the highest force during pulling. The third and fourth phalange were found to exert the highest phalange force during gripping. The force distribution maps from the RA subject showed higher thumb forces and distal phalange forces, relative to the entire phalange, compared to the non-impaired subjects. This suggests that the RA subject compensates for the lack of phalange function with the regions of the hand that still function. Future studies should sample individuals with a larger hand area range and sample more individuals with RA.     

Beyond Material Explanations: Family Solidarity and Mortality,a Small Area‐level Analysis

Social solidarity, being embedded in a network of binding social relationships, tends to extend human longevity. Yet while average incomes in the Western world, and with them, life expectancies, have risen dramatically, the second demographic transition has occasioned a breakdown in traditional family forms. This article considers whether these trends in family life may have slowed the rise in life expectancy. I present a cross‐sectional analysis of Israeli statistical areas (SAs), for which I construct indexes of Standard of Living (SOL), Traditional Family Structure (TFS), and Religiosity (R). I show that (1) increases in all three of these indexes are associated with lower levels of mortality, (2) male mortality is more sensitive to differences in SOL and TFS than is female mortality, and (3) net of differences in SOL and TFS, there is no difference in the mortality levels of Arab and Jewish populations.     

Obtaining multistate life table distributions for highly refined subpopulations from cross-sectional data: A bayesian extension of sullivan’s method

Multistate life table methods are often used to estimate the proportion of remaining life that individuals can expect to spend in various states, such as healthy and unhealthy states. Sullivan’s method is commonly used when panels containing data on transitions are unavailable and true multistate tables cannot be generated. Sullivan’s method requires only cross-sectional mortality data and cross-sectional data indicating prevalence in states of interest. Such data often come from sample surveys, which are widely available. Although the data requirements for Sullivan’s method are minimal, the method is limited in its ability to produce estimates for subpopulations because of limited disaggregation of data in cross-sectional mortality files and small cell sizes in aggregated survey data. In this article, we develop, test, and demonstrate a method that adapts Sullivan’s approach to allow the inclusion of covariates in producing interval estimates of state expectancies for any desired subpopulation that can be specified in the cross-sectional prevalence data. The method involves a three-step process: (1) using Gibbs sampling to sample parameters from a bivariate regression model; (2) using ecological inference for producing transition probability matrices from the Gibbs samples; (3) using standard multistate calculations to convert the transition probability matrices into multistate life tables.     

Family boundary ambiguity and the measurement of family structure: the significance of cohabitation

We used data from the first wave of the National Longitudinal Study of Adolescent Health to examine family boundary ambiguity in adolescent and mother reports of family structure and found that the greater the family complexity, the more likely adolescent and mother reports of family structure were discrepant. This boundary ambiguity in reporting was most pronounced for cohabiting stepfamilies. Among mothers who reported living with a cohabiting partner, only one-third of their teenage children also reported residing in a cohabiting stepfamily. Conversely, for those adolescents who reported their family structure as a cohabiting stepfamily, just two-thirds of their mothers agreed. Levels of agreement between adolescents and mothers about residing in a two-biological-parent family, single-mother family, or married stepfamily were considerably higher. Estimates of the distribution of adolescents across family structures vary according to whether adolescent, mother, or combined reports are used. Moreover, the relationship between family structure and family processes differed depending on whose reports of family structure were used, and boundary ambiguity was associated with several key family processes. Family boundary ambiguity presents an important measurement challenge for family scholars.     

Multisystemic Therapy for Disruptive Behavior Problems in Youths With Autism Spectrum Disorders: A Progress Report

Youths with autism spectrum disorders (ASD) often engage in serious disruptive behaviors that interfere with their ability to successfully manage day‐to‐day responsibilities and contribute to relationship problems with caregivers, peers, and teachers. Effective treatments are needed to address the factors linked with disruptive behavior problems in this population of youths. Multisystemic therapy (MST) is a comprehensive family‐ and community‐based treatment approach that has been effective with other difficult‐to‐treat populations of youths and holds promise for youths with ASD. In this article, we review the broad range of factors associated with disruptive behaviors among youths with ASD and discuss how MST interventions can be adapted to address those factors. We also present a framework for our adaptation of the MST model for youths with ASD. This framework includes a recently completed pilot study as well as an ongoing efficacy trial that together have served to identify key interventions for our adaptation of the MST model.