全文获取类型
收费全文 | 21393篇 |
免费 | 860篇 |
国内免费 | 4篇 |
出版年
2020年 | 227篇 |
2019年 | 322篇 |
2018年 | 402篇 |
2017年 | 360篇 |
2016年 | 448篇 |
2015年 | 304篇 |
2014年 | 379篇 |
2013年 | 1855篇 |
2012年 | 678篇 |
2011年 | 789篇 |
2010年 | 466篇 |
2009年 | 522篇 |
2008年 | 637篇 |
2007年 | 707篇 |
2006年 | 625篇 |
2005年 | 551篇 |
2004年 | 589篇 |
2003年 | 546篇 |
2002年 | 516篇 |
2001年 | 554篇 |
2000年 | 595篇 |
1999年 | 440篇 |
1998年 | 306篇 |
1997年 | 229篇 |
1996年 | 238篇 |
1995年 | 234篇 |
1994年 | 231篇 |
1993年 | 196篇 |
1992年 | 343篇 |
1991年 | 326篇 |
1990年 | 342篇 |
1989年 | 304篇 |
1988年 | 289篇 |
1987年 | 270篇 |
1986年 | 279篇 |
1985年 | 296篇 |
1984年 | 223篇 |
1983年 | 255篇 |
1982年 | 197篇 |
1979年 | 284篇 |
1978年 | 259篇 |
1975年 | 225篇 |
1974年 | 253篇 |
1973年 | 280篇 |
1972年 | 237篇 |
1971年 | 217篇 |
1969年 | 197篇 |
1968年 | 255篇 |
1967年 | 240篇 |
1966年 | 211篇 |
排序方式: 共有10000条查询结果,搜索用时 231 毫秒
921.
922.
Two pilot studies and two experiments were conducted to test for relationships between mood states, self-reflection, and helpfulness. It was hypothesized that both negative and positive feelings would increase helpful reactions. In the case of negative moods, however, helpfulness would be inhibited if the induced affect engenders self-reflection by associating the bad mood with the person's self-image in a self-referencing process. To test these predictions, female undergraduates read mood-inducing statements that were either (a) negative in content and containing the personal pronoun “I”, (b) negative but not self-referencing, (c) emotionally positive in content, (d) emotionally neutral, or (e) no statements. Afterward, they were asked to complete a questionnaire and to volunteer to participate in a future study. Findings in the first experiment confirmed the hypothesis. Women who had read negative, self-referencing statements were the least likely to comply with a helpful request. The most helpful participants were those who had previously recited the negative, but not self-referencing, and the positive statements. Neutral and control subjects displayed intermediate amounts of compliance with the helping request. Questionnaire results showed that self-reflection was responsible for decreasing the helpfulness of women when negative mood was associated with some aspect of the self. A second experiment successfully replicated the major findings of the pilot studies and the first experiment. 相似文献
923.
924.
Just, Carpenter, and Woolley propose that measures of single-word processing times, such as gaze durations during normal reading or durations of reader-controlled exposures, can be used both for developing theories of comprehension and for determining the course of new reading technologies. We argue that better understanding of comprehension processes does not necessarily follow from observed correlations between text variables and eye-fixation parameters. Further, recent rapid serial visual presentation (RSVP) research suggests that eye fixation data obtained from studies of normal reading might have little practical value in optimizing the readability of RSVP displays and other means of text presentation. 相似文献
925.
Diane A. Koch Michael J. Chandler David W. Harder Katherine F. Paget 《Journal of applied developmental psychology》1982,3(1):11-21
This study sought to explore the possible relationship between parental style of psychological defense and children's social competence in 50 families in which one parent had been hospitalized for a psychiatric disorder. Based upon a formal analysis of the logical transformations inherent in various defense mechanisms, three levels of complexity of defenses were identified, along with a counterpart set of cognitive operations necessary for decoding these defense levels. It was hypothesized that children lacking the requisite cognitive skills to grasp the logical complexities of their disturbed parent's primary mode of psychological defense would be less socially adjusted and judged less competent than children who could understand the defensive transformations of their parent. The results suggested that children who, due to their cognitive immaturity, are potentially 相似文献
926.
P. F. Haddad 《Personality and individual differences》1982,3(4):461-463
The personalities of 51 women who wished to avoid obstetric intervention and to adopt alternative delivery positions were assessed. The EPQ was completed by the women and their consorts. The women were slightly higher on tough-mindedness (Psychoticism), more extra-verted and had lower dissimulation (Lie scores), than the average woman. Their Neuroticism scores were within the normal range for their age group. The personality scores for their consorts did not differ from the normal population. 相似文献
927.
In three experiments, subjects were asked to memorize related phrase pairs and then to produce one of these phrases from a cue. In Experiment 1, it was found that both memorization times and response latencies increased with the number of words that differed between the phrases. In Experiment 2 and 3, it was shown that the presence of a strong modifying or semantic relationship between words in one phrase influenced both memorization time and response latency when those same words were contrasted between the two phrases. The implications of the results for models of storage, retrieval, and planning of speech are considered. 相似文献
928.
Two experiments are reported on the effects of sleepstate on performance in a same/different matching task, where two visual signals are presented under visual angles of either 10°, 45°, or 100°. The first study showed a stronger effect of sleep-loss at a more wide display. The effect consists of two parts: one is interpreted as due to the initiation and execution of the shift of gaze from the one to the other signal, and the other to the requirement of integrating successively perceived signals. These interpretations were tested in the second study. It was found that a more pronounced effect of sleep loss occurred when two signals are successively presented, but not when the signals are simultaneously viewed, while preceded by a shift of gaze. The implications of the data are discussed. 相似文献
929.
Experimentally induced failure sometimes produces helplessness and sometimes facilitation on subsequent tasks. A model which accounts for this in terms of variations in perceived task difficulty and importance and variations in the cost of effort is proposed. Predictions from the model were confirmed in two experiments using the finger shuttlebox. When subjects expected the test task to be easy, importance of test outcome did not affect performance. However, when they expected the test task to be difficult, low outcome importance led to debilitation, and high importance to facilitation. If, in this condition, subjects experienced initial failure on the task perceived as difficult and important, helplessness rather than facilitation was observed. The model proposed may account for some of the conflicting results obtained in laboratory studies of human helplessness. 相似文献
930.