One of the most relevant problems in principal component analysis and factor analysis is the interpretation of the components/factors. In this paper, disjoint principal component analysis model is extended in a maximum-likelihood framework to allow for inference on the model parameters. A coordinate ascent algorithm is proposed to estimate the model parameters. The performance of the methodology is evaluated on simulated and real data sets. 相似文献
The Corsi Block-Tapping Task measures visuospatial short-term and working memory, but a standardized backward condition is lacking. The authors present a standardized backward procedure that was examined in 246 healthy older adults (ages 50 to 92), comparing the results with the Digit Span subtest of the Wechsler Adult Intelligence Scale--Third Edition. Principal component analysis resulted in a two-factor model, dissociating a verbal and a spatial working-memory factor. Also the Corsi backward is not more difficult than the Corsi forward, in contrast to the Digit Span backward that is more difficult than the Digit Span forward. This may suggest that the Corsi Block-Tapping Task backward task relies on processing within working-memory's slave systems, whereas the Digit Span backward also relies on the central executive component of working memory. Finally, regression-based normative data and cutoff scores for older adults are presented for use in clinical practice. 相似文献
Youth who experience traumatic events are at risk for a range of negative outcomes, including posttraumatic stress disorder, other anxiety disorders, depression, substance use, and health risk behaviors. It is important to identify valid methods to assess individuals for exposure to traumatic events, as well as the types of problems or symptoms they may be experiencing as a result of these events.
An individual's cultural values, beliefs, and practices can affect the ways that trauma-related sequelae are manifested and presented upon evaluation. Obtaining information about a child's ethnic background, including cultural beliefs and practices, can be a useful component of a trauma assessment. In this paper, the authors will (a) review standard guidelines for assessment of trauma in the general population; (b) present an argument for modification of standard trauma assessment strategies used with culturally diverse populations; (c) describe the culturally INFORMED model, comprised of 8 empirically based recommendations for modifying trauma assessment of culturally diverse populations; and (d) provide an example of how this model has been applied to a trauma assessment protocol with a Mexican immigrant population. Implications of how culturally modified assessment can be used to inform culturally modified cognitive-behavioral treatment of trauma symptoms in children also are addressed. 相似文献
Haye’s article Living being and speaking being highlights a confusion that the traditional cognitive science has been making between cognition and representation, reducing
semantics (meaning) to the syntax (computation with symbols). This traditional view cannot fully grasp the dependence of meaning
on the relational context, opening space for the need to take into account the Bakhtinian notions of responsivity and addressivity
to an other as defining features of the communicational social act. Socialized signs are conceived here as central tools to
our relation to the world and to the others. We pursue some of the implications of this radical dialogical commitment specifying
their implications to an ontological level of human beings: relationships are the ground for the depiction of human beings
and otherness as a necessary complementarity of our own existence. 相似文献
Against the background of an unchanging sequence of representational development, we demonstrate that implicit processes of learning and cognition can change from one historical period to another. One generation of Zinacantec Maya children was studied in 1969 and 1970, the next generation in 1991 and 1993. In the intervening two decades, the community, located in Chiapas, Mexico, was involved in a transition from an economy based primarily on subsistence and agriculture to an economy based primarily on money and commerce. A naturalistic study of weaving apprenticeship and an experimental study of visual representation showed that the ecological transition was linked to greater emphasis on independent cultural learning, abstract representation, and innovation, and, correlatively, a movement away from scaffolded guidance, detail-oriented representation, and imitative representational strategies. These changes constituted automatic adaptations with an implicit nature. In addition, historical variability in implicit modes of cultural apprenticeship predicted shifts in implicit processes of child and adolescent cognition. In sum, socialization and development are not fixed but adapt, in a coordinated way, to changing ecological conditions. 相似文献
The content of Catholic social teaching suggests that an appropriate pedagogy for the teaching and learning of Catholic social thought is the teaching and learning of practical reason. This article explores the role of moral exemplars in the teaching and learning of practical reason in a Catholic university. Specifically, the article details the use of moral exemplars in the “Profiles in the Catholic Social Tradition” course taught at the University of Notre Dame in the Fall semester of 2000. After a brief explanation of the appeal to practical reason as an appropriate pedagogy for teaching and learning the content of Catholic social teaching, the article turns to a discussion of our particular experience of using moral exemplars in the classroom. 相似文献
The attributions of 70 young drivers for their own and their friends' risky driving were examined using open-ended questions to determine if there were self-other differences consistent with the actor-observer effect. Six response categories were created, 4 of which were rated as more dispositional than situational by a subsample of the participants and 2 of which were rated as more situational than dispositional. While the largely dispositional category "Showing off, acting cool" was used significantly more for friends than for self, and the largely situational "In a hurry, late" was used significantly more for self than for friends, there was only limited support for the actor-observer effect overall. The participants also rated their friends as taking more risks than themselves. The actor-observer differences are suggested to be influenced primarily by motivational factors and the context in which young people observe their friends' driving. New approaches to traffic safety interventions are suggested. 相似文献
Because of the dramatic increases of culturally diverse individuals in the United States, indigenous perspectives of healing must be understood in the context of interdependent cultural selves. The authors present an extensive review of the literature with a focus on understanding the role of spirituality, balancing energies, close social networks, and interconnectedness in indigenous healing perspectives and philosophies. Examples of indigenous healing approaches are presented, and implications for counseling and research are discussed. 相似文献