Do maternal stress and home environment mediate the relation between early income‐to‐need and 54‐months attentional abilities?

Using Ecological Systems Theory and stage sequential modelling procedures for detecting mediation, this study examined how early developmental contexts impact preschoolers' performances on a measure of sustained attention and impulse control. Data from 1273 European‐American and African‐American participants in the NICHD Study of Early Child Care were used to identify the potential mediators of the relation between early household income‐to‐need (INR) and 54‐month impulsivity and inattention. Exploratory analyses were also conducted to determine whether the relationships between early income, home environment, parenting stress, and the outcome variables differ for African‐American versus European‐American‐American children. We found modest support for the study hypothesis that 36‐month home environment quality mediated the INR/attention relationship. INR accounted for more home environment score variance and home environment accounted for more Impulsivity score variance for African‐American children. Home environments were related to inattention in the European‐American, but not African‐American, group. Copyright © 2007 John Wiley & Sons, Ltd.     

人工关节置换的最佳选择

人工关节外科学是近40年来发展变化最突出的医学领域之一。目前人工关节置换已经成为治疗严重关节病损的临床标准手术。本文通过系统论的基本原则论述了人工关节外科学的发展历史,人工关节假体材料研制、假体设计安装和人工关节置换技术的进展。     

Habituation of the orienting reflex and the development of Preliminary Process Theory

The orienting reflex (OR), elicited by an innocuous stimulus, can be regarded as a model of the organism’s interaction with its environment, and has been described as the unit of attentional processing. A major determinant of the OR is the novelty of the eliciting stimulus, generally operationalised in terms of its reduction with stimulus repetition, the effects of which are commonly described in habituation terms. This paper provides an overview of a research programme, spanning more than 30 years, investigating psychophysiological aspects of the OR in humans. The major complication in this research is that the numerous physiological measures used as dependent variables in the OR context fail to jointly covary with stimulus parameters. This has led to the development of the Preliminary Process Theory (PPT) of the OR to accommodate the complexity of the observed stimulus–response patterns. PPT is largely grounded in autonomic measures, and current work is attempting to integrate electroencephalographic measures, particularly components in the event-related brain potentials reflecting aspects of stimulus processing. The emphasis in the current presentation is on the use of the defining criteria of the habituation phenomenon, and Groves and Thompson’s Dual-process Theory, in the development of PPT.     

A Farewell to Countertransference

The "discovery" of countertransference provided a much-needed corrective to the one-sided view of transference and a patient's pathology. Even if its usefulness in the development of psychoanalysis was indisputable, its days are numbered. When I present my clinical work at conferences, I am often asked questions about my countertransference. These questions contain numerous assumptions that are challenged in this paper. Treatment is discussed from a self psychological perspective to highlight the therapeutic value of enabling the patient to engage a selfobject transference. The concept of "projective identification" is also challenged. Systems theory, in which the therapeutic relationship is understood as a co-construction between therapist and patient, is proposed as a more effective model to deal with the issues formerly included under transference-countertransference.     

Career adaptability development in adolescence: Multiple predictors and effect on sense of power and life satisfaction

This longitudinal panel study investigated predictors of career adaptability development and its effect on development of sense of power and experience of life satisfaction among 330 Swiss eighth graders. A multivariate measure of career adaptability consisting of career choice readiness, planning, exploration, and confidence was applied. Based on Motivational Systems Theory four groups of predictors were assessed: positive emotional disposition, goal decidedness, capability beliefs and social context beliefs. Influence of gender, age, immigration background, parental educational level, and college-bound or vocational education plans were also assessed. Perceived social support and positive emotional disposition, non-immigration background, and continuing to vocational education were single significant predictors of more career adaptability development over the school year. Supporting the connection of career adaptability and positive youth development, increase in career adaptability over time predicted increase in sense of power and experience of life satisfaction.     

The cognitive structure of surprise: looking for basic principles

We develop a conceptual and formal clarification of notion of surprise as a belief-based phenomenon by exploring a rich typology. Each kind of surprise is associated with a particular phase of cognitive processing and involves particular kinds of epistemic representations (representations and expectations under scrutiny, implicit beliefs, presuppositions). We define two main kinds of surprise: mismatch-based surprise and astonishment. In the central part of the paper we suggest how a formal model of surprise can be integrated with a formal model of belief change. We investigate the role of surprise in triggering the process of belief reconsideration. There are a number of models of surprise developed in the psychology of emotion. We provide several comparisons of our approach with those models.