The caregiving relationship under stress: foster carers’ experience of loss of the sense of self

This paper is an account of a piece of research which involved interviewing six foster carers who had ended a placement with a child under the age of five with an early experience of abuse and neglect. The paper describes one of the themes that emerged from the data analysis, the loss of the sense of self in the foster carers, and argues that the experience of attempting to provide care for these children led to internal shifts in the carers that reverberated throughout the network around the child. The paper suggests that knowing about the external reasons for placement breakdown is not enough without taking into account the impact on the internal world of the foster carers and the emotional impact of attempting to provide care for a child who has experienced abuse and neglect.     

The Impact of Family Unification Housing Vouchers on Child Welfare Outcomes

This study addresses whether providing housing vouchers through the Family Unification Program (FUP) to families involved in the child welfare system reduces child maltreatment and the need for child welfare services. The study uses child welfare administrative data on 326 children in Portland, Oregon, and 502 children in San Diego, California from the point at which their families were referred to the program through 18 months post‐referral. Using a quasi‐experimental waitlist comparison design, probit regressions show little impact of FUP on preventing child removal from home, but some positive impact on reunification among children already placed out of home. Hazard estimations show receipt of FUP speeds up child welfare case closure. Impacts on new reports of abuse and neglect are mixed, but point toward reduced reports. Low rates of removal among intact comparison families and high rates of reunification for children in out‐of‐home care suggest poor targeting of housing resources. Housing vouchers are being given to families not bearing the risks the program is intended to address. The presence of some positive findings suggests that housing vouchers might help reduce child welfare involvement if better targeting were practiced by child welfare agencies.     

When Is More Better?

Abstract— We examine three determinants of the relationship between the magnitude of a stimulus and a person's subjective "value" of that stimulus: the process by which value is assessed (either by feeling or by calculation), the evaluability of the relevant magnitude variable (whether the desirability of a given level of that variable can be evaluated independently), and the mode of evaluation (whether stimuli are encountered and evaluated jointly or separately). Reliance on feeling, lack of evaluability, and separate evaluation lead to insensitivity to magnitude. An analysis invoking these factors provides a novel account for why people typically become less sensitive to changes in the magnitude of a stimulus as magnitude increases.     

Social disadvantage and neglectful parenting as precursors to the development of antisocial and aggressive child behavior: Testing a theoretical model

The present study tested a theoretical model advanced to understand the direct and mediated effects of social disadvantage, neglectful parenting, and punitive parenting in the developmental trajectory of aggressive and antisocial behavior in young school‐aged children. To test the model, families of 310 first grade children and 361 fifth grade children, participating in a universal prevention trial in high‐risk areas of a medium‐sized metropolitan area, provided data. Multi‐method and multi‐source indices of the four predictive constructs (Social Disadvantage, Denial of Care Neglect, Supervisory Neglect, and Punitive Discipline) were obtained at the time of enrollment. Multi‐method and multi‐source indices of the criterion construct (Aggression and Antisocial Behavior) were obtained at the time of enrollment and at a five year follow‐up. Based on structural equation modeling, the results established care neglect as a mediator of social disadvantage, and the importance of care neglect to both punitive discipline and antisocial outcomes in the first‐ and fifth‐grade cohorts. Supervisory neglect, however, was important in the antisocial outcome of the fifth‐grade cohort only. Overall, the results established the importance of distinguishing between two subtypes of neglect and the need to consider the role of discipline in concert with neglect when attempting to understand the impact of parenting on the development of antisocial behavior. Aggr. Behav. 30:187‐205, 2004. © 2004 Wiley‐Liss, Inc.     

对感觉记忆在相同范畴视觉搜索中作用的研究

该文以三种字母卡片为刺激物,通过两种靶字母搜索实验,探讨了感觉记忆在相同范畴视觉搜索中的作用。实验结果显示,感觉记忆和短时记忆信息都可能利用时的搜索成绩,明显高于限用短时记忆信息时的搜索成绩。这表明,感觉记忆信息可以直接用于相同范畴的视觉搜索。     

基本心理能力老化的认知机制

基本心理能力老化机制是认知老化领域研究热点之一。横断研究与追踪研究表明, 感觉功能、加工速度、工作记忆等信息加工资源的衰退导致了基本心理能力的衰退。但由于相关研究不能进行因果推论, 基本心理能力老化的认知机制尚存在争论。因此本项目拟采用实验室研究和干预实验设计, 通过操纵感觉功能(知觉压力水平)、干预加工速度与工作记忆, 考察基本心理能力的年龄差异的变化, 以期为认知老化理论的深化和拓展提供实验依据。     

Paradoxical cross-over due to attention to high or low spatial frequencies

The mechanisms underlying the right hemisphere's dominance for spatial and attentional functions lacks a comprehensively explanation. For example, perceptual biases, as observed in line bisection and related tasks, might be caused by an attentional asymmetry or by perceptual processes such as a specialization of the left and right hemisphere for high and low spatial frequencies (SFs), respectively. Here we used the gratingscales task to measure perceptual bias in SF judgements, and we cued participants' attention either to high or low SFs. Participants showed a leftward bias when comparing the high SF components of the stimulus, and a rightward bias when comparing the low SF components-opposite to what would be expected from a hemispheric lateralization for SFs. Two control experiments used different strategies to manipulate the width of the attentional window. However, we observed no influence on perceptual bias, thus ruling out the possibility that the results in Experiment 1 were due to differences in attentional window size. These data support the idea of an attentional asymmetry underlying perceptual bias. Our results provide novel support for the role of attentional asymmetry in perceptual biases.     

A Population-Based Twin Study of Parentally Reported Tactile and Auditory Defensiveness in Young Children

  Some adults and children exhibit defensive behaviors to tactile or auditory stimulation. These symptoms occur not only in subsets of children with ADHD, autism, and Fragile X syndrome, but also in the apparent absence of accompanying disorders. Relatively little research explores the correlates and antecedents of sensory defensiveness. Using a population-based sample of 1,394 toddler-aged twins, mothers reported on tactile and auditory defensiveness, temperament, and behavior problems. The incidence of defensive symptoms was widely distributed, with some accumulation of cases in the extreme range. Girls were overrepresented in the extreme tactile defensiveness group. Both auditory and tactile defensiveness were modestly associated with fearful temperament and anxiety, but they were relatively distinct from other common dimensions of childhood behavioral dysfunction. Twin correlations for the full range of scores and concordance rates for the extremes suggested moderate genetic influences, with some indication that the tactile domain might be more heritable than the auditory domain.     

Right hemispatial neglect: frequency and characterization following acute left hemisphere stroke

The frequency of various types of unilateral spatial neglect and associated areas of neural dysfunction after left hemisphere stroke are not well characterized. Unilateral spatial neglect (USN) in distinct spatial reference frames have been identified after acute right, but not left hemisphere stroke. We studied 47 consecutive right handed patients within 48h of left hemisphere stroke to determine the frequency and distribution of types of right USN using cognitive testing and MRI imaging. The distribution of USN types was different from the previously reported distribution following acute right hemisphere stroke. In this left hemisphere stroke population, allocentric neglect was more frequent than egocentric neglect.