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   752篇
  免费   35篇
  2023年   12篇
  2022年   5篇
  2020年   18篇
  2019年   24篇
  2018年   29篇
  2017年   23篇
  2016年   30篇
  2015年   19篇
  2014年   15篇
  2013年   99篇
  2012年   31篇
  2011年   32篇
  2010年   19篇
  2009年   20篇
  2008年   29篇
  2007年   24篇
  2006年   22篇
  2005年   18篇
  2004年   17篇
  2003年   24篇
  2002年   19篇
  2001年   13篇
  2000年   5篇
  1999年   17篇
  1998年   10篇
  1997年   10篇
  1996年   7篇
  1995年   7篇
  1994年   11篇
  1993年   12篇
  1992年   7篇
  1990年   6篇
  1989年   8篇
  1988年   4篇
  1987年   7篇
  1986年   5篇
  1985年   7篇
  1983年   7篇
  1982年   7篇
  1980年   5篇
  1979年   8篇
  1978年   9篇
  1977年   7篇
  1976年   4篇
  1973年   5篇
  1972年   4篇
  1971年   7篇
  1969年   6篇
  1968年   7篇
  1950年   8篇
排序方式: 共有787条查询结果,搜索用时 15 毫秒
651.
Mothers (N = 168, M age = 37.0 yr., SD = 4.6) responded to a questionnaire of scales measuring sources of stress and symptoms of stress within themselves, and symptoms of stress in their 5-8-yr.-old children (61 girls, 98 boys; M age = 7.3 yr., SD = 1.0). Scores on all scales intercorrelated significantly, indicating a relationship between maternal stress and stress of the child. Both types of stress also correlated with the frequency of punishment of the child. Both maternal stress and frequency of punishment predicted stress symptoms in the children, maternal stress being a somewhat stronger predictor.  相似文献   
652.
The current study examined the persistence and phenotypic presentation of inattention/overactivity (I/O) into early adolescence, in a sample of institution reared (IR) children adopted from Romania before the age of 43 months. Total sample comprised 144 IR and 21 non-IR Romanian adoptees, and a comparison group of 52 within-UK adoptees, assessed at ages 6 and 11 years. I/O was rated using Rutter Scales completed by parents and teachers. I/O continued to be strongly associated with institutional deprivation, with continuities between ages 6 and 11 outcomes. There were higher rates of deprivation-related I/O in boys than girls, and I/O was strongly associated with conduct problems, disinhibited attachment and executive function but not IQ more generally, independently of gender. Deprivation-related I/O shares many common features with ADHD, despite its different etiology and putative developmental mechanisms. I/O is a persistent domain of impairment following early institutional deprivation of 6 months or more, suggesting there may be a possible pathway to impairment through some form of neuro-developmental programming during critical periods of early development.  相似文献   
653.
Theory of Mind (ToM) and Executive Function (EF) have been associated with autism and with attention-deficit hyperactivity disorder (ADHD), and hence might play a role in similar syndromes found following profound early institutional deprivation. In order to examine this possibility the current study included a group of 165 Romanian adoptees, of whom 144 were adopted into the UK from deprived institutional settings before 43months of age, and a group of 52 within-UK adoptees, all adopted before 6months of age. Both groups were assessed at 6 and 11years. The Strange Stories task was used to assess ToM and the Stroop task was used to assess EF, both at age 11. The Romanian adoptees displayed deficits in both ToM and EF compared with the within-UK adoptee group. The degree of deficit was greater for children who had experienced more than 6months of institutional deprivation. Deficits in both domains (ToM and EF) were associated with each of the three apparently deprivation-specific problems, namely quasi-autism, disinhibited attachment and inattention/overactivity. Statistical analyses indicated a mediating role for both ToM and EF with respect to quasi-autism; possibly a partial mediating role for EF with respect to inattention/overactivity; and probably no mediating role for either ToM or EF in the case of disinhibited attachment. In conclusion, there is evidence for a possible mediating role for ToM and EF in the development of some apparently deprivation-specific difficulties in institution-reared Romanian adoptees, but neither accounts for the overall pattern of deprivation-related difficulties.  相似文献   
654.
We examined gender differences in intergenerational family conflict and its associations with psychological and academic adjustment using a United States sample of 121 Hmong American first-year college students. Hmong women and men reported similar levels of family conflict. Family conflict was related to psychological distress, above and beyond neuroticism. Gender moderated the relationship between family conflict and substance usage and academic performance. For Hmong college men, higher family conflict was associated with lower rates of smoking and higher rates of completing the first year of college. For Hmong college women, higher family conflict was associated with greater likelihood of alcohol consumption in their lifetime.  相似文献   
655.
Here we report evidence from a new eye‐tracking measure of relational memory that suggests that 9‐month‐old infants can encode memories in terms of the relations among items, a function putatively subserved by the hippocampus. Infants learned about the association between faces that were superimposed on unique scenic backgrounds. During test trials, infants were shown three faces presented on a familiar scene. All three faces were equally familiar; however, one had been presented with the test background earlier. Visual behavior was recorded continuously using a TOBII eye tracker. Infants looked preferentially at the face that matched the test background very early in the trial; however, the time course of this preferential looking effect varied as a function of delay. These results suggest that by 9 months of age infants can form memories that represent the relations among items and maintain them over short delays.  相似文献   
656.
The present experiments investigated how the process of statistically segmenting words from fluent speech is linked to the process of mapping meanings to words. Seventeen-month-old infants first participated in a statistical word segmentation task, which was immediately followed by an object-label-learning task. Infants presented with labels that were words in the fluent speech used in the segmentation task were able to learn the object labels. However, infants presented with labels consisting of novel syllable sequences (nonwords; Experiment 1) or familiar sequences with low internal probabilities (part-words; Experiment 2) did not learn the labels. Thus, prior segmentation opportunities, but not mere frequency of exposure, facilitated infants' learning of object labels. This work provides the first demonstration that exposure to word forms in a statistical word segmentation task facilitates subsequent word learning.  相似文献   
657.
Women have been found to outperform men on face recognition tasks, specifically in the recognition of female faces. Men do not seem to exhibit a corresponding own-sex bias. To examine the generality and possible reasons for these patterns, 107 men and 112 women viewed faces of both children and adults of either Swedish or Bangladeshi origin, for later recognition. As expected, women were especially good at remembering female faces, but also outperformed men on male faces. Men did not show an own-sex bias. Thus, regardless of age and ethnicity of the faces, women performed at a higher level than men on both female and male faces, possibly reflecting enhanced interest in faces, and in particular, female faces.  相似文献   
658.
Two experiments were conducted to investigate the effect of letter location information in recognition memory judgments. The experiments used the recognition without identification paradigm (Peynircioglu, 1990), in which participants first attempt to identify the test item and then make a recognition decision as to whether or not the item was studied. In these studies, items that are not identified but that correspond to items that were presented are typically still rated as more likely to have been studied than those that were not presented. The present experiments demonstrated this finding with a variant of the conjunction lure paradigm. In Experiments 1 and 2, participants were tested with word fragments that were made from the letters of two words. When the letters were from studied items, fragments were rated higher than when the test items were derived from two unstudied items, or one studied item and one unstudied item, suggesting that recognition without identification is prone to the same types of errors as recognition with identification. Results are discussed in terms of familiarity effects in recognition memory.  相似文献   
659.
This article reviews the position of women in the UK labour market and the increasing complexity of their employment patterns. It criticises current career theory for girls and women and examines enhancers and inhibitors of women's career development. Finally, some promising developments in theory-building for girls and women are briefly discussed, together with some implications for practice.  相似文献   
660.
Genetic testing for inherited deafness is now available within some genetics centres. This study used a structured questionnaire to assess the potential uptake of prenatal diagnosis (PND) for inherited deafness, and document the opinions of deaf and hearing individuals toward PND and termination of pregnancy (TOP) for hearing status. Participants were self-selected from the whole of the UK, of whom 644 were deaf, 143 were hard of hearing or deafened, and 527 were hearing individuals who had either a deaf parent or child. The results showed that 21% of deaf, 39% of hard of hearing and deafened, and 49% of hearing participants said they would consider PND for deafness. Six percent of deaf, 11% of hard of hearing and deafened, and 16% of hearing participants said they would consider a TOP if the fetus was found to be deaf. Two percent of deaf participants said they would prefer to have deaf children and would consider a TOP if the fetus was found to be hearing.  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