Optimal paired comparison designs for first-order interactions

In many fields of applications paired comparisons are used in which either full or partial profiles of the alternatives are presented. For this situation we introduce an appropriate model and derive optimal designs in the presence of interactions when all attributes have the same number of levels.     

Child Health-Related Quality of Life and Parental Social Capital in Greece: An Exploratory Study

In this paper, we examined dimensions of child health-related quality of life in Greece in relation to parental assessments of neighbourhood social capital and social support networks. For the analysis, two main measures were used: (1) child self-reported health-related quality of life in ten dimensions, as measured by the KIDSCREEN questionnaire; (2) subjective measures of parental neighbourhood social capital and social support. Parental assessments of neighbourhood social capital and social support were both independently and positively associated with child self-reported health-related quality of life. However, they were not associated with the same dimensions of child well being, nor were they associated with all dimensions of child well being. These results suggest that greater attention in future research needs to be paid to the differential associations between the various dimensions of social capital and child health-related quality of life, with clear focus implications for social and health policies.     

Linking maternal psychopathology to children's excessive crying and sleeping problems in a large representative German sample—The mediating role of social isolation and bonding difficulties

Attaining self-regulation is a major developmental task in infancy, in which many children show transient difficulties. Persistent, clinically relevant difficulties in self-regulation include excessive crying or sleeping disorders. Many families with affected children are burdened with multiple psychosocial risk. This suggests that regulatory problems are best conceptualized as the maladaptive interplay of overly burdened parents and a dysfunctional parent–child interaction. The current study examines whether social isolation and bonding difficulties function as mediating mechanisms linking maternal psychopathology to (1) children's excessive crying and (2) sleeping problems. The sample comprised N = 6598 mothers (M = 31.51 years) of children between zero to three years of age (M = 14.08 months, 50.1% girls). In addition to socio demographic data, the written questionnaire included information on maternal depression/anxiety, isolation, bonding, and children's regulatory problems. Hypotheses were tested with a mediation model controlling for psychosocial risk and child characteristics. As expected, maternal symptoms of depression/anxiety were linked to infants‘ excessive crying and sleeping problems. Social isolation and bonding difficulties mediated this association for excessive crying as well as for sleeping problems, but social isolation was a single mediator for sleeping problems only. The findings provide important insights in the mediating pathways linking maternal psychopathology to children's regulatory problems.     

What do young children know about sex? Research on the sexual knowledge of children between the ages of 2 and 6 years

We investigated the sexual knowledge of 63 Dutch children in the age range 2–6 years. Boys and girls were equally represented in the sample. The children had an average, or above‐average IQ and none of them had any experience of sexual abuse. It was found that young children have a very limited knowledge of sexuality. They only possess some basic knowledge of genital differences, gender identity, sexual body parts and (non‐sexual) functions of the genitals. Knowledge of pregnancy and birth, reproduction and adult sexual behaviour was found to be very limited and decreased in the order presented here. Non‐sexually abused children appear to interpret situations that show physical intimacy between adults and children in terms of their own experiences. None of the children talked about sexual activities. Older children generally knew more than younger ones. No significant differences in knowledge between boys and girls were found. Copyright © 2000 John Wiley & Sons, Ltd.     

Gebildet, flexibel und prek?r. Berufseinstieg von Graduierten der Universit?t Salzburg

This article??s aim is to enlighten university graduates?? transition to the labor market, with a focus on atypical forms of work, which have increased strongly in Austria in the past ten years. Especially career entrants, even if highly educated, are affected by these, potentially precarious types of employment. The theoretical part deals with the labor market in general and the specific conditions for academic career-entrants. Using data of the graduate survey conducted by the University of Salzburg in November 2009, this article shows that de facto two thirds of the questioned academic career entrants are employed atypically at the time of the survey. Nevertheless these flexible forms of work seem to decrease the more time has passed since graduation. Therefore a process of normalization of employment forms is assumed.     

Asymmetry models for square contingency tables: exact tests via algebraic statistics

Square contingency tables with the same row and column classification occur frequently in a wide range of statistical applications, e.g. whenever the members of a matched pair are classified on the same scale, which is usually ordinal. Such tables are analysed by choosing an appropriate loglinear model. We focus on the models of symmetry, triangular, diagonal and ordinal quasi symmetry. The fit of a specific model is tested by the chi-squared test or the likelihood-ratio test, where p-values are calculated from the asymptotic chi-square distribution of the test statistic or, if this seems unjustified, from the exact conditional distribution. Since the calculation of exact p-values is often not feasible, we propose alternatives based on algebraic statistics combined with MCMC methods.     

Doubled Homes — Doubled Social Ties? Children's Relationships in Post‐Divorce Shared Residence Arrangements

Although an increasing number of children live in shared residence arrangements after parental divorce, studies on their social relationships are rare. We address this research gap by relying on configurational approaches, social capital and social networks. Building on qualitative case studies (ego‐centred networks, interviews) with 14 children aged 10–14, results show that respondents constructed social ties based on two key categories: emotional closeness and constancy. Having two places of residence did not multiply close relations, and relations that entered the network after parental divorce (e.g. step kin) were particularly distant. Children's networks at both homes had limited interconnections.