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   1109篇
  免费   83篇
  国内免费   1篇
  1193篇
  2024年   4篇
  2023年   8篇
  2022年   15篇
  2021年   29篇
  2020年   44篇
  2019年   60篇
  2018年   71篇
  2017年   69篇
  2016年   65篇
  2015年   45篇
  2014年   52篇
  2013年   136篇
  2012年   76篇
  2011年   84篇
  2010年   38篇
  2009年   31篇
  2008年   33篇
  2007年   33篇
  2006年   39篇
  2005年   38篇
  2004年   22篇
  2003年   23篇
  2002年   13篇
  2001年   15篇
  2000年   8篇
  1999年   8篇
  1998年   10篇
  1997年   9篇
  1996年   3篇
  1995年   6篇
  1994年   4篇
  1993年   3篇
  1992年   4篇
  1991年   5篇
  1990年   10篇
  1989年   8篇
  1987年   3篇
  1985年   5篇
  1984年   6篇
  1983年   5篇
  1982年   10篇
  1981年   8篇
  1980年   5篇
  1979年   6篇
  1976年   3篇
  1975年   2篇
  1973年   3篇
  1971年   2篇
  1970年   2篇
  1969年   2篇
排序方式: 共有1193条查询结果,搜索用时 8 毫秒
161.
This study examined the effects of micronutrients on children with clinically elevated stress and anxiety 23–36 months after experiencing a natural disaster (a major earthquake). A single-case multiple-baseline design allocated 14 children (7 males, 7 females; aged 8–11 years; 10 with formal anxiety-disorder diagnoses) randomly to 1, 2 or 3 week baselines. Participants then took eight capsules/day of a micronutrient formula (EMPowerplus) during an 8-week open-label trial. Assessment instruments were the Children’s Global Assessment Scale (CGAS), the Screen for Child Anxiety-Related Emotional Disorders (SCARED), the Pediatric Emotional Distress Scale (PEDS), and the Revised Children’s Manifest Anxiety Scale (RCMAS). Symptom severity declined slightly in baseline for some children and declined much more during intervention for all children. Effect sizes at end of treatment were ?1.40 (RCMAS), ?1.92 (SCARED), +1.96 (CGAS), and ?2.13 (PEDS). Modified Brinley plots revealed decreases in anxiety and improvements in overall functioning for 10 out of 11 completing participants. Side effects were mild and transient. The study provided evidence that treatment with a dietary supplement containing micronutrients reduced children’s post-disaster anxiety to a clinically significant degree. Future placebo-controlled randomized-controlled trials and treatment-comparison research is recommended to determine if this is true of anxiety in general.  相似文献   
162.
Primary prevention focuses on the reduction of risk factors. Children of mothers with an eating disorder are a proven “at risk” group, because children internalise their experiences. Prevention in the field of eating disorders has as yet only addressed children of seven or eight upwards and only in school‐based programs which did not incorporate mothers. This project targeted mothers with an eating disorder who had children under the age of thirteen. The hypothesis is that if these mothers can be encouraged to change damaging behaviour that their children are likely to model, we can attempt to break the cycle of dysfunction. This is a qualitative and quantitive research project, carried out with standardised measures and semi‐structured interviews before and after a nineteen week therapy group, with six and twelve month follow ups. The group consisted of eight mothers. This paper describes the group and provides a case study of one participant. The initial analysis suggests that the support of a therapeutic group allowed this mother enough space for reflection. She became aware of her dysfunctional behaviour and was able to begin to understand the underlying reasons behind it. This led to an improvement in her own Eating Disorder (ED) and she was subsequently able to make change in her responses to her children's needs.  相似文献   
163.
Using a classical eyeblink conditioning paradigm, we have previously shown that the rate of acquisition of a conditioned response may be manipulated by engaging subjects in background tasks of varying complexity concurrent to conditioning. To further examine the influence of the background environment on conditioning, a picture set designed to elicit emotional responses, the International Affective Picture System (IAPS), was presented to subjects during classical eyeblink conditioning. The results suggest that eyeblink conditioning does appear to be sensitive to contextual manipulations of arousal. Pictures rated as very arousing were found to engage subjects enough to enhance learning, although not to the point that autonomic functions were significantly altered between picture groups. We suggest that group differences in learning may be a result of either novelty of, or vigilance to, interesting pictures rather than as a direct result of physiological arousal.  相似文献   
164.
A search of the psychological literature was conducted to obtain a better understanding of the issues surrounding collaboration between clergy and psychologists. An electronic search of PsycINFO for 1970–1999 ultimately yielded 52 articles in secular journals and 37 articles in religiously oriented journals that discussed collaboration. Whereas interest in collaboration peaked in religious journals during the 1980's, the number of articles on collaboration appearing in secular journals increased significantly from 1970 to 1999. Content analysis confirmed six major themes about collaboration found by A. J. Weaver, K. J. Flannelly, L. T. Flannelly, and J. E. Oppenheimer (2003). One of the most common themes was the clergy's role as frontline mental-health workers, which was mentioned significantly more often in secular than religious journals. The need for greater education and knowledge was also mentioned significantly more often in secular than religious journals. Insufficient knowledge or education was frequently seen as an obstacle to collaboration. Other factors affecting collaboration are discussed.  相似文献   
165.
166.
Recently, we reported that High-Alcohol-Drinking (HAD) rats exhibited selective deficits in active avoidance learning under alcohol-naive conditions, and that administration of moderate doses of alcohol (0.5 and 1.0 g/kg) facilitated learning in these rats (Blankenship et al., 2000; Rorick et al., 2003b). We hypothesized that the deficits resulted from excessive fear in the aversive learning context and that the anxiolytic properties of alcohol may have contributed to the improved learning that was observed after alcohol administration. This hypothesis was supported by a recent study in which prolonged freezing in HAD rats was seen after a classical fear conditioning procedure (Rorick et al., 2003a). To provide additional evidence that HAD rats indeed exhibit behaviors consistent with the expression of increased fear in aversive learning contexts, we employed a Pavlovian fear conditioning task to measure heart rate in HAD and Low-Alcohol-Drinking (LAD) rats. In this study, HAD (HAD-1 and HAD-2) and LAD (LAD-1 and LAD-2) rats were assigned to one of three pre-exposure conditions: Context Only, Context/Tone, or Sequential (Context Only followed by Context/Tone) Pre-Exposure. Following pre-exposure, fear conditioning acquisition and extinction procedures were identical for all groups. Results indicated that although no baseline differences were observed between HAD and LAD rats, HAD rats receiving Context-Only pre-exposure exhibited excessive heart rate reactivity to the tone conditional stimulus during fear conditioning acquisition, compared to LAD rats receiving the same pre-exposure conditions. These findings support the hypothesis that HAD rats exhibit behaviors consistent with increased fear in aversive learning contexts, as measured by autonomic conditioning.  相似文献   
167.
168.
169.
In multiple-list learning, retrieval during learning has been suggested to improve recall of the single lists by enhancing list discrimination and, at test, reducing interference. Using electrophysiological, oscillatory measures of brain activity, we examined to what extent retrieval during learning facilitates list encoding. Subjects studied 5 lists of items in anticipation of a final cumulative recall test and did either a retrieval or a no-retrieval task between study of the lists. Retrieval was from episodic memory (recall of the previous list), semantic memory (generation of exemplars from an unrelated category), or short-term memory (2-back task). Behaviorally, all 3 forms of retrieval enhanced recall of both previously and subsequently studied lists. Physiologically, the results showed an increase of alpha power (8-14 Hz) from List 1 to List 5 encoding when no retrieval activities were interpolated but no such increase when any of the 3 retrieval activities occurred. Brain-behavior correlations showed that alpha-power dynamics from List 1 to List 5 encoding predicted subsequent recall performance. The results suggest that, without intermittent retrieval, encoding becomes ineffective across lists. In contrast, with intermittent retrieval, there is a reset of the encoding process for each single list that makes encoding of later lists as effective as encoding of early lists.  相似文献   
170.
People often encounter reminders to memories that they would prefer not to think about. When this happens, they often try to exclude the unwanted memory from awareness, a process that relies upon inhibitory control. We propose that the ability to regulate awareness of unwanted memories through inhibition declines with advancing age. In two experiments, we examined younger and older adults' ability to intentionally suppress retrieval when repeatedly confronted with reminders to an experience they were instructed to not think about. Older adults exhibited significantly less forgetting of the suppressed items compared to younger adults on a later independent probe test of recall, indicating that older adults failed to inhibit the to-be-avoided memories. These findings demonstrate that the ability to intentionally regulate conscious awareness of unwanted memories through inhibitory control declines with age, highlighting differences in memory control that may be of clinical relevance in the aftermath of unpleasant life events.  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