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   2811篇
  免费   92篇
  国内免费   6篇
  2022年   14篇
  2021年   27篇
  2020年   27篇
  2019年   39篇
  2018年   52篇
  2017年   60篇
  2016年   61篇
  2015年   40篇
  2014年   58篇
  2013年   285篇
  2012年   99篇
  2011年   127篇
  2010年   82篇
  2009年   66篇
  2008年   108篇
  2007年   108篇
  2006年   117篇
  2005年   112篇
  2004年   109篇
  2003年   104篇
  2002年   95篇
  2001年   31篇
  2000年   41篇
  1999年   41篇
  1998年   59篇
  1997年   52篇
  1996年   36篇
  1995年   40篇
  1994年   45篇
  1993年   45篇
  1992年   37篇
  1991年   29篇
  1990年   33篇
  1989年   31篇
  1988年   23篇
  1987年   28篇
  1986年   32篇
  1985年   24篇
  1984年   42篇
  1983年   41篇
  1982年   36篇
  1981年   48篇
  1980年   35篇
  1979年   41篇
  1978年   31篇
  1977年   30篇
  1976年   29篇
  1975年   35篇
  1974年   26篇
  1973年   18篇
排序方式: 共有2909条查询结果,搜索用时 125 毫秒
11.
The relationship between anxiety and depression was examined in a sample of 106 children and adolescents referred to an outpatient anxiety disorder clinic for children. Twenty-eight percent of patients with DSM-III diagnoses of anxiety disorders displayed a concurrent major depression. Children with anxiety disorders plus major depression were found (1) to be older, (2) to demonstrate more severe anxiety symptomatology, and (3) to be diagnosed with different rates of certain anxiety-disorder subtypes, when compared to anxious patients without major depression. Nondepressed anxious children and adolescents did not differ from a psychopathological control group in severity of either anxiety or depression symptoms.  相似文献   
12.
Mothers and fathers were asked via an open-ended interview technique to explain specific interactions with their children that had been noted during a period of family observation in the home. Explanations were obtained for behavior in five interactional contexts (e.g., interactions involving discipline and interactions encouraging the child to be independent). The explanations were classified first to determine the extent to which they referred to what might have been actual thoughts at the time of the behavior. Second, they were content analysed to determine how much parents perceived themselves as responding to the child, versus how much they presented their behavior as arising from their own dispositions, purposes, and experiences. Results showed that most of the explanations did not contain what could be considered conscious cognitions at the time of the behavior. This suggests parents might have been responding automitically in the situation. Also, parents did not perceive their behavior as being mainly in response to the child. Instead they primarily saw themselves as the agents of their own actions. The latter trend varied in degree according to the interactional context. Mothers seemed more child centered in their explanations than fathers. Implications are examined for future research on links between parental cognition and behavior, and for the methods adopted to study parental cognitions. Questions are raised about the extent to which parents planfully determine their behavior and the extent to which they are aware of the reasons for their behavior.  相似文献   
13.
14.
Infant sensitivity to kinetic information specifying three-dimensional object shape was assessed using computer-generated random-dot displays. Four-month-old infants were habituated to displays of an object oscillating about two different axes on alternating trials. Following habituation, the infants were tested for recovery from habituation to a display of the same object and a novel object. Both test displays employed a new axis of rotation. The infants generalized habituation to the same object and increased their looking to the new object. These results provide evidence that infants are sensitive to motion-carried information specifying three-dimensional object shape, since the random-dot displays minimized static information that differentiated the two objects. These findings suggest that, at least by 4 months of age, infants can detect subtle differences in shape from purely kinetic information.  相似文献   
15.
Mental health practitioners continually struggle to find a simple framework for describing the characteristics of the psychologically healthy individual. Hillel's often quoted saying provides relevant insight into the healthy personality and a convenient framework against which to examine psychological health.  相似文献   
16.
17.
This paper compares three groups of individuals in their beliefs about charitable giving. Focusing upon their preferences for different kinds of needy recipients, the paper compares the views of 49 people from (a) business, (b) professional and (c) ‘manual’ backgrounds. Their justifications of need provided the basis for comparisons on the basic themes of emotional response to requests for funds, to local versus overseas aid and to the relative roles of charity and state provision. It is argued that distinctions between the groups show the need to examine specific beliefs as well as generally held ideologies about charity. In addition, a further comparison of the groups is used to argue that they exemplify differences in the actual form of the gift relationship. These differences in form show the importance of examining charitable giving within specific social contexts, as well as with reference to the various ways of raising funds.  相似文献   
18.
Tyrone Lai 《Synthese》1989,79(3):361-392
In trying to make discoveries, we are trying to uncover knowledge of HIDDEN realities. It appears impossible to uncover knowledge of hidden realities. How can we evaluate results? (How can we find out whether they are true or even good approximation when we cannot compare them to the hidden realities?) But we are often able to do things which appear impossible; it depends on whether we have chanced onto, or discovered, or invented, the relevant OPERATING PRINCIPLES. It appeared impossible to fly to the moon in one lifetime. We discovered the principle of the rocket. If we can discover the operating principle for making discoveries, we know how we make discoveries. In this paper, I show step by step how we can discover this operating principle.  相似文献   
19.
A model of telescoping is proposed that assumes no systematic errors in dating. Rather, the overestimation of recent occurrences of events is based on the combination of three factors: (1) Retention is greater for recent events; (2) errors in dating, though unbiased, increase linearly with the time since the dated event; and (3) intrusions often occur from events outside the period being asked about, but such intrusions do not come from events that have not yet occurred. In Experiment 1, we found that recall for colloquia fell markedly over a 2-year interval, the magnitude of errors in psychologists' dating of the colloquia increased at a rate of .4 days per day of delay, and the direction of the dating error was toward the middle of the interval. In Experiment 2, the model used the retention function and dating errors from the first study to predict the distribution of the actual dates of colloquia recalled as being within a 5-month period. In Experiment 3, the findings of the first study were replicated with colloquia given by, instead of for, the subjects.  相似文献   
20.
This study evaluated the Children's Firesetting Interview (CFI). The measure was developed to operationalize multiple domains of functioning derived from a riskfactor model of firesetting. The model poses that child, parent, and family characteristics promote firesetting and continuation of a pattern of firesetting. Major factors include curiosity about fire, involvement in and exposure to firerelated activities, and knowledge about first safety The CFI, consisting of 46 questions reflecting six a prioridimensions, was administered to 519 children (ages 6–13) recruited from nonpatient, outpatient, and inpatient samples. Internal consistency and testretest reliability of the measure were satisfactory. Criterion validity was supported by the findings that firesetters showed greater curiosity about fire, involvement in firerelated activities, exposure to models/materials, and knowledge about things that burn than did nonfiresetters. These findings did not vary as a function of the child's patient status or level of antisocial behavior. Implications for the evaluation of firesetting risk are discussed.This study was supported by grant MH-39976 from the Antisocial and Violent Behavior Branch of the National Institute of Mental Health and by a Research Scientist Development Award (MH00353) from the National Institute of Mental Health. The authors acknowledge the constructive suggestions of two anonymous reviewers.  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