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   1698篇
  免费   29篇
  1727篇
  2024年   12篇
  2023年   17篇
  2022年   21篇
  2021年   27篇
  2020年   41篇
  2019年   59篇
  2018年   43篇
  2017年   68篇
  2016年   69篇
  2015年   58篇
  2014年   67篇
  2013年   214篇
  2012年   73篇
  2011年   80篇
  2010年   64篇
  2009年   53篇
  2008年   63篇
  2007年   47篇
  2006年   57篇
  2005年   46篇
  2004年   44篇
  2003年   57篇
  2002年   43篇
  2001年   13篇
  2000年   28篇
  1999年   31篇
  1998年   30篇
  1997年   20篇
  1996年   19篇
  1995年   14篇
  1994年   10篇
  1993年   18篇
  1992年   14篇
  1991年   7篇
  1990年   9篇
  1989年   11篇
  1988年   13篇
  1987年   12篇
  1986年   10篇
  1985年   16篇
  1984年   7篇
  1983年   10篇
  1982年   13篇
  1981年   8篇
  1979年   11篇
  1978年   7篇
  1977年   7篇
  1976年   7篇
  1974年   7篇
  1973年   11篇
排序方式: 共有1727条查询结果,搜索用时 0 毫秒
81.
Verbal probabilities are a common mean for communicating risk and uncertainties in many decision-making settings (e.g., finance, medicine, military). They are considered directional because they elicit a focus on either the outcome occurrence (e.g., there is a chance) or on its non-occurrence (e.g., it is unlikely). According to a quantitative perspective, directionality is dependent on the vague probabilistic meaning conveyed by verbal probabilities—e.g., p(outcome) > .50 = > focus on outcome occurrence. In contrast a more qualitative perspective suggests that directionality depends on contextual factors. The present study tested whether the directionality of verbal probabilities was determined by their vague probabilistic meaning, by contextually manipulated variables (i.e., representativeness and base rate), or by a combination of both. Participants provided their own expressions to describe the guilt of a suspect and then assessed the vague probabilistic meaning and directionality associated with those expressions. Results showed that directionality was mainly determined by the vague probabilistic meaning but also by the base rate of guilt. Although attention focus on the occurrence or the non-occurrence of the target outcome is dependent on vague probabilistic meaning, it cannot be fully accounted for by it.  相似文献   
82.

According to the literature, minimal research has been conducted on fulltime mothers (i.e., stay-at-home mothers [SAHM]); studies dealing with motherhood tend to emphasize the developmental needs of the child versus the mother. The current research seeks to tackle that issue by bringing fulltime motherhood to the forefront. In particular, phenomena related to women transitioning from work to fulltime motherhood are qualitatively examined. Four women participated in this study and shared their personal experiences surrounding this subject matter. A SAHM Model and two SAHM Portraits are created to comprehend and explain the complexities found within their roles.  相似文献   
83.
Resumen

Una relación semántica entre los componentes de estímulo relevantes e irrelevantes facilita la ejecución en tareas de anticipación pero parece inhibir la ejecución en tareas de tipo Stroop. Se estudiaron las causas de esta discrepancia. En una serie de tareas de denominación de palabras, se analizaba el efecto del número de dominios semánticos (que covariaba con el número de alternativas de respuesta) presentando a un grupo de estudiantes un conjunto idéntico de estímulos en forma bloqueada o mixta. El experimento 1 muestra que la presentación bloqueada produce un efecto de interferencia de tipo Stroop, mientras la presentación mixta produce facilitación semántica. Los experimentos 2 y 3 muestran que la variante palabra-palabra de la tarea de Stroop y la variante denominación de palabra de la tarea de anticipación semántica pertenecen a una misma familia de tareas. Ambas tareas muestran: a) un efecto de facilitación cuando el anticipador se relaciona con el objetivo y b) un efecto de interferencia cuando el anticipador es miembro del conjunto de respuesta. En la tarea de Stroop, la competición de respuestas aumenta el efecto de facilitación; en la tarea de anticipación, el efecto de facilitación semántica aumenta el efecto de competición de respuestas.  相似文献   
84.
85.
86.
Abstract-Examining the receptive fields of brain signals can elucidate how information impinging on the former modulates the latter. We applied this time-honored approach in early vision to the higher-level brain processes underlying face categorizations. Electroencephalograms in response to face-information samples were recorded while observers resolved two different categorizations (gender, expressive or not). Using a method with low bias and low variance, we compared, in a common space of information states, the information determining behavior (accuracy and reaction time) with the information that modulates emergent brain signals associated with early face encoding and later category decision. Our results provide a time line for face processing in which selective attention to diagnostic information for categorizing stimuli (the eyes and their second-order relationships in gender categorization; the mouth in expressive-or-not categorization) correlates with late electrophysiological (P300) activity, whereas early face-sensitive occipito-temporal (N170) activity is mainly driven by the contralateral eye, irrespective of the categorization task.  相似文献   
87.
Psychoanalytic psychotherapy in clinical practice is traditionally a long-term treatment conducted by well-trained psychotherapists. However, very few studies have been published that evaluate the effects of such treatment. To redress this lack of studies, 55 individuals selected for long-term psychoanalytic psychotherapy (average, 3 years) were invited to participate in a naturalistic study. The psychotherapists had a mean of 15 years of professional experience. The 36 patients who completed psychotherapy manifested a substantial reduction in symptomatic suffering and decreased levels of character pathology, as measured by the Karolinska Psychodynamic Profile (KAPP) and the Karolinska Scales of Personality. Generally, such changes were not found in the individuals who did not engage in treatment. In the therapy group, improvements were found on eight KAPP subscales defining different aspects of character: Intimacy and Reciprocity, Frustration Tolerance, Regression in the Service of the Ego, Coping with Aggressive Affects, Conceptions of Bodily Appearance and their Significance for Self-esteem, Sexual Function, Sexual Satisfaction, and Personality Organization. The results indicate that individuals who engaged in psychotherapy improved their capacity to handle crucial aspects of life and reduced their symptomatic suffering.  相似文献   
88.
This article examines whether various cognitive abilities are associated with symptoms of ADHD. Cognitive ability is conceptualized using Cattell-Horn-Carroll (CHC) theory as measured using the Woodcock-Johnson Tests of Cognitive Ability (3rd ed.). This article also examines whether test session behavior mediates the association between cognitive ability and ADHD. Participants are children ages 6 to 12 with (n= 33) and without (n= 19) ADHD. Results show that inattentive symptoms of ADHD are significantly related to the CHC ability of processing speed above and beyond the effect of test session behavior. Symptoms of ADHD (both inattention and hyperactivity/impulsivity) are also significantly associated with visual spatial processing, but this is completely mediated by test session behavior. It is concluded that inattentive symptoms of ADHD are associated with slower processing speed and that this relationship is not explained by test session behavior.  相似文献   
89.
Negatively valenced stimuli foster cognitive impairment in schizotypy and schizophrenia. To identify relevant brain mechanisms, the authors had 16 positive-schizotypy and 16 control participants perform an emotional Stroop task, judging the ink color of negative and neutral words during functional magnetic resonance imaging (fMRI) of regional brain activity. Schizotypy individuals showed increased right and decreased left activity in dorsolateral prefrontal cortex, indicating a deficit in maintenance of attentional set in the presence of negative emotional distractors. They also showed abnormal activity in ventral limbic areas, including decreased activity in nucleus accumbens and increased activity in hippocampus and amygdala, a circuit involved in the integration of cognitive and affective processes. These results indicate that aspects of emotion-cognition processes and the brain mechanisms that implement them are similar in schizotypy and schizophrenia.  相似文献   
90.
There is a need to evaluate the effectiveness of residential treatment centers (RTCs) due to scrutiny around use of this service that is viewed as costly, restrictive, and has resulted in mixed outcome results for youth. Discrepancies exist in residential literature regarding the amount of time in treatment that is optimal for having a positive effect on youth outcomes. This study used archival data to examine the relationship between time in treatment and youth’s improvement in functioning and restrictiveness of living environment in a cross-site evaluation of a large sample of youth (N = 716) who discharged from RTCs over a 5 year time period. Researchers aimed to identify an ideal time in treatment that is beneficial for youth and to add to the practice-based evidence for the effectiveness of RTCs. Results of segmented regression analyses indicate a non-linear relationship that showed a longer time in treatment predicts improvement in overall functioning and restrictiveness of living environment during the first 6 months of treatment. However there is no relationship between time in treatment and outcome variables between 6 and 10 months, and a negative relationship exists between longer time in treatment and outcome variables after 10 months in treatment. Practical implications of results can be used to inform advocacy efforts, discharge planning, and return on investment calculations.  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