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   3890篇
  免费   467篇
  4357篇
  2023年   27篇
  2022年   34篇
  2021年   56篇
  2020年   82篇
  2019年   82篇
  2018年   184篇
  2017年   198篇
  2016年   238篇
  2015年   162篇
  2014年   127篇
  2013年   471篇
  2012年   219篇
  2011年   258篇
  2010年   138篇
  2009年   193篇
  2008年   193篇
  2007年   187篇
  2006年   166篇
  2005年   128篇
  2004年   129篇
  2003年   133篇
  2002年   124篇
  2001年   60篇
  2000年   59篇
  1999年   54篇
  1998年   54篇
  1997年   40篇
  1996年   34篇
  1995年   54篇
  1994年   30篇
  1993年   30篇
  1992年   29篇
  1991年   28篇
  1990年   24篇
  1989年   21篇
  1988年   15篇
  1987年   19篇
  1986年   19篇
  1985年   24篇
  1984年   13篇
  1983年   15篇
  1982年   22篇
  1981年   24篇
  1980年   14篇
  1979年   17篇
  1978年   17篇
  1977年   12篇
  1976年   16篇
  1975年   16篇
  1974年   16篇
排序方式: 共有4357条查询结果,搜索用时 0 毫秒
861.
School counselors encounter ethical and legal situations that necessitate the knowledge and confidence to apply decision-making skills. We report the findings from a correlational investigation that examines practicing school counselors’ (N = 287) ethical and legal self-efficacy, ethical and legal knowledge, and general self-efficacy. Higher ethical and legal self-efficacy was associated with higher general self-efficacy and ethical and legal knowledge. The implications of these findings are discussed.  相似文献   
862.
In three experiments the orienting response (OR) to a light was reduced by presenting rats with a serial conditioning schedule in which the light was always followed by a tone, and the tone was intermittently paired with food. The original strength of the OR was then restored by changing the nature of the serial conditioning: the light was followed either by the tone and food, or by nothing. Experiments 1 and 2 demonstrated that this change resulted in an increase in the OR relative to control groups, which continued to receive the original training. Experiment 3 revealed a similar effect using a within-subjects design. A further finding from the first two experiments was that the recovery of the OR was accompanied by an enhancement in the conditionability of the light. Overall, the results suggest that the accuracy with which the light signals the events that immediately follow it is an important determinant of the strength of the OR it elicits.  相似文献   
863.
As groups of people age, the differences in the cognitive abilities of the most and least able become more extreme. This increase in between-individual variance is accompanied by an increase in within-individual variance: the difference between individuals' levels of performance on their best and least well retained skills. The implications of increasing between-individual variance are discussed in terms of the range of different factors that may affect cognitive ageing. Increases in within-individual variance are discussed in terms of differences betweeen “fluid” and “crystallized” abilities. The usefulness of this distinction and its functional implications are questioned. The hypothesis that age-related declines in “fluid” abilities are best modelled in terms of declines in a single factor is evaluated. Evidence is presented of disparate rates of decline, even of “fluid” cognitive abilities, such as performance on IQ tests, ability on information-processing tasks, and efficiency on memory tasks. Data from large-scale cross-sectional studies suggests that cognitive skills do not “all go together when they go”, but that there may, rather, be characteristic patterns, or syndromes, of cognitive ageing.  相似文献   
864.
865.
866.
867.
868.
869.
870.
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