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   3993篇
  免费   318篇
  国内免费   391篇
  2024年   6篇
  2023年   47篇
  2022年   54篇
  2021年   64篇
  2020年   126篇
  2019年   147篇
  2018年   134篇
  2017年   155篇
  2016年   125篇
  2015年   105篇
  2014年   121篇
  2013年   382篇
  2012年   119篇
  2011年   146篇
  2010年   154篇
  2009年   141篇
  2008年   200篇
  2007年   278篇
  2006年   277篇
  2005年   235篇
  2004年   233篇
  2003年   172篇
  2002年   139篇
  2001年   76篇
  2000年   78篇
  1999年   51篇
  1998年   34篇
  1997年   32篇
  1996年   20篇
  1995年   18篇
  1994年   15篇
  1993年   18篇
  1992年   6篇
  1991年   10篇
  1990年   8篇
  1989年   11篇
  1987年   5篇
  1985年   62篇
  1984年   68篇
  1983年   43篇
  1982年   51篇
  1981年   50篇
  1980年   52篇
  1979年   51篇
  1978年   81篇
  1977年   64篇
  1976年   72篇
  1975年   60篇
  1974年   54篇
  1973年   50篇
排序方式: 共有4702条查询结果,搜索用时 31 毫秒
961.
The purpose of this article is to call attention to the necessary role of remembering in the execution of planned actions, such as following instructions, delivering messages, and keeping appointments. Remembering in this context is considered within a theoretical framework of activities, actions, and operations advanced by Soviet developmental psychologists. The importance of remembering planned actions in applied settings, strategies employed by children and adults in remembering planned actions, relationships between motivation and remembering, and developmental relationships are discussed. In addition, several characteristics of the Soviet developmental approach are briefly noted.  相似文献   
962.
Fear, conditioned to apparatus cues associated with electric shock, was measured by recording freezing. Pain reactivity was simultaneously measured by recording the paw-licking and paw-lifting response to Formalin injected into a paw. Stimuli associated with shock produced freezing and inhibited the responses to Formalin; whereas various control stimuli did neither. These results indicate that one of the responses to fear is analgesia. The opiate antagonist naltrexone reversed this analgesia, suggesting that the analgesia has an opiate nature. The results were interpreted in terms of a two-aversive-motivational-systems model. One system, the pain system, is instigated by tissue-damaging stimuli and produces recuperative behavior that functions to promote healing. The other system, the fear system, is triggered by conditioned fear stimuli. It produces species-specific defensive reactions and also inhibits the pain system via analgesia.  相似文献   
963.
The organization imposed by children on lists presented in a multitrial free recall task was investigated in two experiments. In the first, 6 and 9 year olds were tested for multitrial free recall of an unstructured noun or mixed list, followed by two sorting trials. Organization was quantified using two structurally comparable indices. One was an index of subjective clustering, based on individual word groupings determined in the sorting trials, and the other was an index of the sequential consistency of recall order over successive trials. The older children had significantly higher scores on recall and subjective clustering but there was no age effect on sequential consistency. In the second experiment 6, 8 and 10 year olds were tested for multitrial free recall of line drawings of common objects. Two sorting trials followed and organization was quantified using the subjective clustering and sequential consistency indices. Recall and subjective clustering scores again showed significant increases with age. As before, no age effect on sequential consistency was found. The results were interpreted in terms of a differential sensitivity of the two indices to an age-related qualitative change in the basis of organization.  相似文献   
964.
965.
Errors made by young children when they are asked to draw a model were investigated in two studies. In the first study, the experimenter asked 5- and 8-year-old children to draw a cup that had a flower decal (transfer) attached to its outside surface, attached to its inside surface or positioned beside it. The 8-year-old children in all conditions produced visually accurate drawings. The 5-year-old children produced visually accurate drawings when the flower decal was positioned beside the cup and when the flower decal was attached to the inside surface of the cup but not when the flower decal was attached to the cup's outside surface. In the second study, 5- and 8-year-old children were asked to draw a cup that had either an intact or a broken handle. The handle area of the cup was either in view or not in view. The 5- and 8-year-old children performed comparably in this experiment. The children had difficulty producing accurate copies of the model only when the cup had a handle and the handle was not in view. Taken together, these studies indicate that 5-year-old children are more likely to produce visually accurate drawings than has previously been supposed. Difficulty in producing accurate drawings occurred when drawing rules and drawing conventions interfered with the task.  相似文献   
966.
967.
968.
969.
Four dimensions (applied, analytic, general, conceptual) were selected from Baer, Wolf, and Risley's (1968) seminal article on the nature of applied behavior analysis and were monitored throughout the first 10 volumes of the Journal of Applied Behavior Analysis. Each of the experimental articles in Volumes 1 through 6 and the first half of Volumes 7 through 10 was rated on each of these dimensions. The trends showed that applied behavior analysis is becoming a more purely technical effort, with less interest in conceptual questions. We are using simpler experimental designs and are conducting fewer analogue studies. Although concern for maintenance is increasing, other forms of generality are being measured or analyzed less often. These trends are discussed in terms of a technical drift in applied behavior analysis.  相似文献   
970.
The use of an analogy from a semantically distant domain to guide the problemsolving process was investigated. The representation of analogy in memory and processes involved in the use of analogies were discussed theoretically and explored in five experiments. In Experiment I oral protocols were used to examine the processes involved in solving a problem by analogy. In all experiments subjects who first read a story about a military problem and its solution tended to generate analogous solutions to a medical problem (Duncker's “radiation problem”), provided they were given a hint to use the story to help solve the problem. Transfer frequency was reduced when the problem presented in the military story was substantially disanalogous to the radiation problem, even though the solution illustrated in the story corresponded to an effective radiation solution (Experiment II). Subjects in Experiment III tended to generate analogous solutions to the radiation problem after providing their own solutions to the military problem. Subjects were able to retrieve the story from memory and use it to generate an analogous solution, even when the critical story had been memorized in the context of two distractor stories (Experiment IV). However, when no hint to consider the story was given, frequency of analogous solutions decreased markedly. This decrease in transfer occurred when the story analogy was presented in a recall task along with distractor stories (Experiment IV), when it was presented alone, and when it was presented in between two attempts to solve the problem (Experiment V). Component processes and strategic variations in analogical problem solving were discussed. Issues related to noticing analogies and accessing them in memory were also examined, as was the relationship of analogical reasoning to other cognitive tasks.  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