全文获取类型
收费全文 | 1485篇 |
免费 | 217篇 |
专业分类
1702篇 |
出版年
2023年 | 38篇 |
2021年 | 5篇 |
2020年 | 94篇 |
2019年 | 18篇 |
2018年 | 16篇 |
2017年 | 76篇 |
2016年 | 92篇 |
2015年 | 82篇 |
2014年 | 79篇 |
2013年 | 318篇 |
2012年 | 52篇 |
2011年 | 24篇 |
2010年 | 55篇 |
2009年 | 72篇 |
2008年 | 44篇 |
2007年 | 32篇 |
2006年 | 46篇 |
2005年 | 20篇 |
2004年 | 15篇 |
2003年 | 12篇 |
2002年 | 27篇 |
2001年 | 9篇 |
2000年 | 11篇 |
1999年 | 13篇 |
1998年 | 13篇 |
1997年 | 6篇 |
1996年 | 38篇 |
1995年 | 30篇 |
1994年 | 22篇 |
1993年 | 25篇 |
1992年 | 36篇 |
1991年 | 36篇 |
1990年 | 39篇 |
1989年 | 19篇 |
1988年 | 23篇 |
1987年 | 14篇 |
1986年 | 17篇 |
1985年 | 5篇 |
1984年 | 4篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1979年 | 16篇 |
1978年 | 23篇 |
1977年 | 23篇 |
1976年 | 4篇 |
1974年 | 3篇 |
1973年 | 7篇 |
1972年 | 3篇 |
1971年 | 3篇 |
排序方式: 共有1702条查询结果,搜索用时 15 毫秒
71.
72.
Nancy L. Segal PhD 《Suicide & life-threatening behavior》2009,39(6):569-575
Genetically informative samples can address hereditary and experiential influences on suicide‐related behaviors. The frequency of suicide‐related behaviors was compared in twins from two survivor groups: (1) those whose co‐twins' deaths were suicides (monozygotic [MZ]: n = 47; dizygotic [DZ]: n = 31), and (2) those whose co‐twins' deaths were nonsuicides (MZ: n = 347; DZ: n = 170). The frequency of suicide attempts among suicide survivors was significantly higher in MZ than DZ twins, while the frequency of suicide attempts among nonsuicide twin survivors did not differ between MZ and DZ twins. Twin concordance for suicide attempts more likely reflects a genetic predisposition than a behavioral reaction to the loss. 相似文献
73.
White Helen V. Silamongkol Thanharat Wiglesworth Andrea Labella Madelyn H. Goetz Emersyn R. Cullen Kathryn R. Klimes-Dougan Bonnie 《Journal of abnormal child psychology》2021,49(5):683-695
Research on Child and Adolescent Psychopathology - Non-suicidal self injury (NSSI) is a transdiagnostic maladaptive behavior that is highly prevalent in adolescence. A greater understanding of the... 相似文献
74.
The disambiguation of a syntactically ambiguous sentence in favor of a less preferred parse can lead to slower reading at the disambiguation point. This phenomenon, referred to as a garden-path effect, has motivated models in which readers initially maintain only a subset of the possible parses of the sentence, and subsequently require time-consuming reanalysis to reconstruct a discarded parse. A more recent proposal argues that the garden-path effect can be reduced to surprisal arising in a fully parallel parser: words consistent with the initially dispreferred but ultimately correct parse are simply less predictable than those consistent with the incorrect parse. Since predictability has pervasive effects in reading far beyond garden-path sentences, this account, which dispenses with reanalysis mechanisms, is more parsimonious. Crucially, it predicts a linear effect of surprisal: the garden-path effect is expected to be proportional to the difference in word surprisal between the ultimately correct and ultimately incorrect interpretations. To test this prediction, we used recurrent neural network language models to estimate word-by-word surprisal for three temporarily ambiguous constructions. We then estimated the slowdown attributed to each bit of surprisal from human self-paced reading times, and used that quantity to predict syntactic disambiguation difficulty. Surprisal successfully predicted the existence of garden-path effects, but drastically underpredicted their magnitude, and failed to predict their relative severity across constructions. We conclude that a full explanation of syntactic disambiguation difficulty may require recovery mechanisms beyond predictability. 相似文献
75.
76.
Elizabeth G. Spitzer MA Kelly L. Zuromski MS Margaret T. Davis PhD Tracy K. Witte PhD Frank Weathers PhD 《Suicide & life-threatening behavior》2018,48(1):105-115
This study used the interpersonal–psychological theory of suicide to explore the relationships among DSM-5 posttraumatic stress disorder (PTSD) symptom clusters derived from the six-factor anhedonia model and facets of acquired capability for suicide (ACS). In a sample of 373 trauma-exposed undergraduates, most PTSD symptom clusters were negatively associated with facets of ACS in bivariate correlations, but the anhedonia cluster was positively associated with ACS in regression models. Structure coefficients and commonality analysis indicated that anhedonia served as a suppressor variable for the other symptom clusters. Our findings further elucidate the complex relationship between specific PTSD symptom clusters and ACS. 相似文献
77.
Litowitz BE 《Journal of the American Psychoanalytic Association》2002,50(1):171-198
Post-Freudian theories have been criticized for abandoning what is basic to psychoanalysis: the biological body and sexuality as the source of intrapsychic motivation. Arguably, however, they are more present than ever before-for example, in explanations by theorists who propose therapeutic actions beyond interpretation, presymbolic enactments of procedural memories, or disclosures of the analyst's bodily states as an aspect of intersubjectivity. By contrast, the Freudian body was always a text whose mediated meanings require interpretation, for which Freud provided eloquent guides. It is this textuality, and not sexuality, that distinguishes a psychoanalytic approach: a psycho-logic constructed according to a grammar of desire that mediates experience and creates interpretable behavior, both in action and in speech. Theoretical changes in psychoanalysis are traced historically along the dimension of textuality, the example of perversion is invoked, and the conclusion drawn that any theoretical approach, traditional or post-Freudian, that expands an understanding of textuality contributes to the science of psychoanalysis. 相似文献
78.
79.
80.
In the present experiments, we examined whether shifts of attention selectively interfere with the maintenance of both verbal
and spatial information in working memory and whether the interference produced by eye movements is due to the attention shifts
that accompany them. In Experiment 1, subjects performed either a spatial or a verbal working memory task, along with a secondary
task requiring fixation or a secondary task requiring shifts of attention. The results indicated that attention shifts interfered
with spatial, butnot with verbal, working memory, suggesting that the interference is specific to processes within the visuospatial sketchpad.
In Experiment 2, subjects performed a primary spatial working memory task, along with a secondary task requiring fixation,
an eye movement, or an attention shift executed in the absence of an eye movement. The results indicated that both eye movements
and attention shifts interfered with spatial working memory. Eye movements interfered to a much greater extent than shifts
of attention, however, suggesting that eye movements may contribute a unique source of interference, over and above the interference
produced by the attention shifts that accompany them. 相似文献