首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   717篇
  免费   12篇
  729篇
  2024年   12篇
  2023年   8篇
  2022年   12篇
  2021年   13篇
  2020年   21篇
  2019年   34篇
  2018年   34篇
  2017年   29篇
  2016年   38篇
  2015年   30篇
  2014年   26篇
  2013年   81篇
  2012年   40篇
  2011年   51篇
  2010年   27篇
  2009年   21篇
  2008年   25篇
  2007年   39篇
  2006年   27篇
  2005年   16篇
  2004年   18篇
  2003年   21篇
  2002年   11篇
  2001年   6篇
  2000年   3篇
  1999年   4篇
  1998年   4篇
  1997年   6篇
  1996年   9篇
  1995年   10篇
  1994年   7篇
  1993年   2篇
  1992年   4篇
  1991年   3篇
  1990年   5篇
  1989年   3篇
  1988年   5篇
  1986年   1篇
  1984年   4篇
  1983年   4篇
  1982年   4篇
  1981年   2篇
  1979年   3篇
  1978年   2篇
  1977年   2篇
  1970年   1篇
  1961年   1篇
排序方式: 共有729条查询结果,搜索用时 15 毫秒
291.
In 2009, the Council for Accreditation of Counseling and Related Educational Programs (CACREP) included training standards specific to addiction for clinical mental health counseling programs. This study surveyed CACREP‐accredited program coordinators to determine how addiction‐specific standards were addressed.  相似文献   
292.
The author reviews the main points in Freud's 1917 paper 'Mourning and Melancholia' and relates them to the process of both normal and troubled adolescent development. Using clinical examples she illustrates the ways in which the processes Freud describes in melancholia operate in some disturbed adolescents such that instead of mourning the lost objects of their childhood, they become stuck, remaining ambivalently attached to them and incorporating them into their final adult identity and sexual organization.

L'auteur passe en revue les points essentiels du texte de Freud « Deuil et mélancolie » (1917e [1915]) et les relie aux processus du développement, normal et pathologique, de l'adolescence. À l'aide d'exemples cliniques, il illustre la manière dont les processus décrits par Freud dans la mélancolie sont mis en ?uvre chez certains adolescents perturbés?:?au lieu de faire le deuil des objets perdus de leur enfance, ils restent bloqués dans l'ambivalence de leur attachement À ceux-ci et s'efforcent de les incorporer dans leur identité adulte et leur organisation sexuelle finale.

L'autrice passa in rassegna i punti principali dell'articolo del 1917 di Freud 'Lutto e melanconia' e li mette in relazione al processo dello sviluppo adolescenziale sia normale che disturbato. Utilizzando esempi clinici l'autrice illustra i modi in cui i processi che Freud descrive nella melanconia operano in alcuni adolescenti disturbati cosi' che invece del lutto per la perdita degli oggetti dell'infanzia, gli adolescenti rimangono incastrati e ambivalentemente attaccatti ad essi, incorporandoli nella loro identita' adulta finale e nell'organizzazione sessuale.

Die Autorin rezensiert die Hauptpunkte in Freud's Abhandlung ' Trauer und Melancholie' und bezieht sie auf den Prozess sowohl der normalen als auch der gestörten adoleszenten Entwicklung. Anhand von klinischen Beispielen illustriert sie die Art und Weise, in denen die Prozesse, die Freud in der Melancholie beschreibt, in einigen gestörten Jugendlichen operieren, so dass sie anstatt die verlorenen Objekte ihrer Kindheit zu betrauern, sie festgefahren sind und ambivalent an sie gebunden bleiben und sie letztlich in ihre Erwachsenenidentität und sexuelle Organisation inkorporieren.  相似文献   
293.
Navigators use both external cues and internal heuristics to help them plan efficient routes through environments. In six experiments, we discover and seek the origin of a novel heuristic that causes participants to preferentially choose southern rather than northern routes during map-based route planning. Experiment 1 demonstrates that participants who are tasked to choose between two equal-length routes, one going generally north and one south, show reliable decision preferences toward the southern option. Experiment 2 demonstrates that participants produce a southern preference only when instructed to adopt egocentric rather than allocentric perspectives during route planning. In Experiments 3-5, we examined participants’ judgments of route characteristics and found that judgments of route length and preferences for upper relative to lower path options do not contribute to the southern route preference. Rather, the southern route preference appears to be a result of misperceptions of increased elevation to the north (i.e., north is up). Experiment 6 further supports this finding by demonstrating that participants provide greater time estimates for north- than for equivalent south-going routes when planning travel between U.S. cities. Results are discussed with regard to predicting wayfinding behavior, the mental simulation of action, and theories of spatial cognition and navigation.  相似文献   
294.
Object constancy, the ability to recognize objects despite changes in orientation, has not been well studied in the auditory modality. Dolphins use echolocation for object recognition, and objects ensonified by dolphins produce echoes that can vary significantly as a function of orientation. In this experiment, human listeners had to classify echoes from objects varying in material, shape, and size that were ensonified with dolphin signals. Participants were trained to discriminate among the objects using an 18-echo stimulus from a 10° range of aspect angles, then tested with novel aspect angles across a 60° range. Participants were typically successful recognizing the objects at all angles (M = 78 %). Artificial neural networks were trained and tested with the same stimuli with the purpose of identifying acoustic cues that enable object recognition. A multilayer perceptron performed similarly to the humans and revealed that recognition was enabled by both the amplitude and frequency of echoes, as well as the temporal dynamics of these features over the course of echo trains. These results provide insight into representational processes underlying echoic recognition in dolphins and suggest that object constancy perceived through the auditory modality is likely to parallel what has been found in the visual domain in studies with both humans and animals.  相似文献   
295.
The relationship between achievement goals and individual and collective learning activities was examined for 290 university students who completed two questionnaires. One assessed three achievement goals-a mastery goal and two performance goals, namely, approval seeking and advancing. The other questionnaire measured how actively students report engaging in individual and collective learning activities. Regression analyses showed that the adoption of mastery goals was associated with active engagement in both individual and collective learning, while adoption of a performance goal of approval seeking was associated with passive engagement in individual learning activities. These results are discussed in relation to their theoretical implications and in regard to the possible moderating effect of protecting self-worth.  相似文献   
296.
Twin relationships have been hailed as one of the most unique and intimate kinds of relationships. Unfortunately, there is a paucity of empirical research that addresses the interpersonal nature of twin relationships. In this article, the authors argue that attachment theory may provide a useful framework for understanding the nature of twin relationships. The authors present data indicating that (a) twins are more likely than non-twin siblings to use their sibling as an attachment figure; (b) the developmental course of twin attachment differs from that of other attachments; and (c) certain factors, such as genetic relatedness, empathy, including the other in the self, and shared experiences, may impact the extent to which twins use one another as attachment figures.  相似文献   
297.
Three experiments were performed to explore the effects of mismatches between actions (key-presses) and the contents of auditory feedback (pitch events) during music performance. Pianists performed melodies from memory during altered auditory feedback that was synchronized with key-presses but matched the pitch of other sequence events. Feedback direction was manipulated by presenting pitches that matched events intended for the past (delays; Experiments 1 and 3) or the future (prelays; Experiments 2 and 3). Feedback distance was manipulated by varying the absolute separation between the current event and the location of the feedback pitch. All alterations disrupted the accuracy of performance (pitch errors) more so than timing. Serial-ordering errors indicated confusions among proximal and metrically similar events, consistent with the predictions of an incremental planning model (Palmer & Pfordresher, 2003). Patterns of serial-ordering errors suggested that performers compensate for the disruptive effects of altered feedback by changing event activations during planning.  相似文献   
298.
This meta-analysis of 62 studies (N=17,767 adopted children) examined whether the cognitive development of adopted children differed from that of (a) children who remained in institutional care or in the birth family and (b) their current (environmental) nonadopted siblings or peers. Adopted children scored higher on IQ tests than their nonadopted siblings or peers who stayed behind, and their school performance was better. Adopted children did not differ from their nonadopted environmental peers or siblings in IQ, but their school performance and language abilities lagged behind, and more adopted children developed learning problems. Taken together, the meta-analyses document the positive impact of adoption on the children's cognitive development and their remarkably normal cognitive competence but delayed school performance.  相似文献   
299.
Declines in the ability to process context information may represent a fundamental mechanism of age-related cognitive changes. Two components of context processing--activation/updating and maintenance--were examined in a sample of healthy younger and older adults, along with individuals suffering from early stage dementia of the Alzheimer's type (DAT). All older adult groups showed context activation/updating impairments, whereas context maintenance was only impaired in the oldest adults (age>75 years) and was further exacerbated in DAT individuals. The results suggest that context processing may be composed of functionally dissociable components and point to the utility of this construct in understanding the timecourse of cognitive decline in healthy and pathological aging.  相似文献   
300.
The majority of adolescent smokers are able to purchase cigarettes even though laws prohibit the sale of cigarettes to minors (Radecki & Zdunich, 1993). The present study focused on merchant licensing, civil penalties, and monitoring of merchant behavior. Several different schedules of enforcement in the city of Chicago were evaluated to determine the optimal schedules to reduce the sale of cigarettes to minors in a major metropolitan area. Schedules of 2, 4, and 6 months were effective in reducing illegal sales, from 86% to 19%, 87% to 34%, and 87% to 42%, respectively. In a control condition, illegal sales remained high (approximately 84%). Cigarette control laws that regularly enforce civil penalties for tobacco sales violations can successfully reduce minors' access to cigarettes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号