Friend or foe? Ingroup identification moderates reactions to outgroup members' allocation behavior

In the present article we build on previous work suggesting that people react more strongly to the favorability of outgroup authority allocations than ingroup authority allocations. Based on theorizing and research on intergroup perception and self‐categorization, we refine this argument by suggesting that responses to outgroup authorities depend on people's level of ingroup identification. We present data from an experiment showing that the favorability of treatment by an outgroup member primarily influences decision acceptance among high (vs. low) ingroup identifiers. In line with theory and research based on the relational model of authority, findings of the present study also suggest that ingroup identification has a reversed effect on acceptance of an ingroup authority's decisions. Specifically, the favorability of treatment by an ingroup member primarily influences decision acceptance among low (vs. high) ingroup identifiers. Copyright © 2006 John Wiley & Sons, Ltd.     

The latent variable approach as applied to transitive reasoning

We discuss the limitations of hypothesis testing using (quasi-) experiments in the study of cognitive development and suggest latent variable modeling as a viable alternative to experimentation. Latent variable models allow testing a theory as a whole, incorporating individual differences with respect to developmental processes or abilities in the model. Experiments, in contrast, aim at testing hypotheses that refer to a specific part of a theory; also they ignore individual differences or model the individual differences using age group as a proxy for developmental stage. Drawing on a sample of 409 5–13-year olds, we demonstrate the advantages of latent variable models in the area of transitive reasoning. A comparison of three models showed that the latent variable model that represented fuzzy trace theory had a better fit than the models representing Piaget's theory or linear ordering theory.     

Partial Likelihood Estimation of IRT Models with Censored Lifetime Data: An Application to Mental Disorders in the ESEMeD Surveys

Developmental studies of mental disorders based on epidemiological data are often based on cross-sectional retrospective surveys. Under such designs, observations are right-censored, causing underestimation of lifetime prevalences and correlations, and inducing bias in latent trait models on the observations. In this paper we propose a Partial Likelihood (PL) method to estimate unbiased IRT models of lifetime predisposition to develop a certain outcome. A two-step estimation procedure corrects the IRT likelihood of outcome appearance with a function depending on (a) projected outcome frequencies at the end of the risk period, and (b) outcome censoring status at the time of the observation. Simulation results showed that the PL method yielded good recovery of true frequencies and intercepts. Slopes were best estimated when events were sufficiently correlated. When PL is applied to lifetime mental health disorders (assessed in the ESEMeD project surveys), estimated univariate prevalences were, on average, 1.4 times above raw estimates, and 2.06 higher in the case of bivariate prevalences.     

Self-esteem and outcome fairness: differential importance of procedural and outcome considerations

Results of a survey of 222 detainees in Dutch jails and police stations showed that outcome-fairness judgments of individuals with high self-esteem were more strongly related to outcome considerations than to procedural considerations, whereas outcome-fairness judgments of individuals with low self-esteem were more strongly related to procedural considerations than to outcome considerations. It was proposed that these differences were due to the fact that (a) procedures more strongly express a social evaluation than outcomes and (b) individuals with low self-esteem are more concerned with social evaluations than individuals with high self-esteem. The implications of the results for other individual-differences factors and other populations than detainees are discussed.     

Age differences in the prevalence of physical aggression among 5-11-year-old Canadian boys and girls

It has been proven extremely difficult in the past to estimate the prevalence of physical aggression in children for two main reasons: (a) a heterogeneous sampling of behaviors (i.e., mix between physically aggressive and non-physically aggressive antisocial behaviors), and (b) a lack of a "gold standard" to identify children who exhibit physically aggressive behaviors on a frequent basis. The goal of this study was to test for age differences in the prevalence of physical aggression in the Canadian population of school-aged boys and girls, using cross-sectional data from the National Longitudinal Survey of Children and Youth (NLSCY). The first wave of the NLSCY included a representative sample of 12,292 Canadian children aged 5-11 years. We used latent class analysis to identify children whose propensity to exhibit physically aggressive behaviors was much higher than that of other children of the same age and sex in the population. The prevalence of physical aggression was estimated at 3.7% in 5-11-year-old boys and ranged from .5% to 2.3% in 11 and 5-year-old girls, respectively. Hence, the results show a decreasing trend in the prevalence of physical aggression with age for girls, but not for boys. These findings suggest the importance of considering the developmental pathways of physical aggression for boys and girls separately.     

Estimating Multilevel Models on Data Streams

Psychometrika - Social scientists are often faced with data that have a nested structure: pupils are nested within schools, employees are nested within companies, or repeated measurements are...     

Individual autonomy in work teams: The role of team autonomy,self-efficacy,and social support

Task autonomy is long recognized as a means to improve functioning of individuals and teams. Taking a multilevel approach, we unravelled the constructs of team and individual autonomy and studied the interplay between team autonomy, self-efficacy, and social support in determining individual autonomy of team members. Hierarchical regression results of a survey among 733 members of 76 health care teams showed that individual autonomy was related not only to the level of team autonomy, but also to self-efficacy and social support. Moreover, results suggested that social support moderates the extent to which team autonomy is incorporated into the individual tasks of team members. In highly autonomous teams, individuals experiencing moderate support from co-workers and supervisors reported higher individual autonomy than members experiencing either low or very high support.     

The order-restricted association model: Two estimation algorithms and issues in testing

This paper presents a row-column (RC) association model in which the estimated row and column scores are forced to be in agreement with an a priori specified ordering. Two efficient algorithms for finding the order-restricted maximum likelihood (ML) estimates are proposed and their reliability under different degrees of association is investigated by a simulation study. We propose testing order-restricted RC models using a parametric bootstrap procedure, which turns out to yield reliablep values, except for situations in which the association between the two variables is very weak. The use of order-restricted RC models is illustrated by means of an empirical example. Francisca Galindo performed this research as a part of her PhD. dissertation project at Tilburg University.     

Suicides and Other Deaths in Police Custody

This article presents data from a study on 59 deaths in Dutch police stations in the period 1983–1993. Twenty deaths were caused by suicide, 19 by intoxications, 8 by natural causes, and 12 by other or unknown causes. The mortality rate, suicide rate, and poisoning rate in police stations were higher than in penitentiary institutions and in the general population. The morality rate was lower in large police stations than in small police stations. Identification of deviant detainees seemed less problematic than handling these deviant detainees. It is argued that exceptional detainees without serious charges should be transferred to Health Care services. Other structural preventive measures are also discussed.