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   2240篇
  免费   87篇
  国内免费   1篇
  2023年   16篇
  2021年   22篇
  2020年   46篇
  2019年   47篇
  2018年   54篇
  2017年   82篇
  2016年   77篇
  2015年   57篇
  2014年   62篇
  2013年   256篇
  2012年   105篇
  2011年   108篇
  2010年   52篇
  2009年   60篇
  2008年   84篇
  2007年   98篇
  2006年   80篇
  2005年   66篇
  2004年   80篇
  2003年   63篇
  2002年   63篇
  2001年   38篇
  2000年   38篇
  1999年   40篇
  1998年   38篇
  1997年   26篇
  1996年   28篇
  1995年   24篇
  1994年   15篇
  1993年   28篇
  1992年   30篇
  1991年   34篇
  1990年   20篇
  1989年   19篇
  1988年   21篇
  1987年   20篇
  1986年   17篇
  1985年   32篇
  1984年   23篇
  1983年   17篇
  1982年   14篇
  1981年   15篇
  1980年   11篇
  1979年   21篇
  1978年   20篇
  1977年   13篇
  1975年   21篇
  1974年   15篇
  1973年   15篇
  1966年   15篇
排序方式: 共有2328条查询结果,搜索用时 15 毫秒
221.
222.
This study examined the effects of exposure to muscular and hypermuscular media images on young men's body images, and the moderating roles of baseline body dissatisfaction (BD) and muscularity dissatisfaction (MD). Men (M age = 21.9, SD = 2.8) were exposed to pictures of muscular (n = 34) or hypermuscular (n = 29) male physiques throughout a 30-min health seminar. In support of the study hypotheses, higher levels of baseline BD and MD were associated with greater post-seminar BD and MD. In addition, MD moderated the effects of the exposure conditions on BD; greater baseline MD was associated with greater post-seminar BD, but only among men who viewed the muscular images. These results speak to the importance of pre-existing muscularity concerns in determining men's reactions to muscular physique images, and suggest that exposure to the media ideal of muscularity, and not muscularity per se, elicits body dissatisfaction in men with pre-existing muscularity concerns.  相似文献   
223.
Suicidal ideation has been thought to have a relatively stable course across weeks and months. However, daily changes in levels of ideation have not been adequately examined despite the importance of potential variability clinically and conceptually. For example, it has been suggested that variability in suicidal ideation may become less closely tied to variability in other mood symptoms (e.g., depression, hopelessness) among individuals with multiple suicide attempts. The present report had two related goals: (1) to prospectively evaluate suicidal ideation and related mood symptoms, and (2) to determine whether suicide attempt status predicted a decreased association between ideation and other mood symptoms. Non-clinical participants (N=108) with varying levels of suicidal ideation and number of previous suicide attempts completed the beck hopelessness scale (BHS), beck depression inventory (BDI), and suicide probability scale (SPS) every day for 4 weeks. Findings suggested considerable variability in suicidal ideation, especially for multiple attempters. Multiple attempt status predicted a decreased association between suicidal ideation and depression, although the results were only marginally significant. These findings have implications for conceptual models of suicide risk as well as assessment and treatment of suicidal individuals.  相似文献   
224.
30 survivors of the U.S.S. Emmons (M age = 81.3 yr., SD = 2.3), which was sunk by kamikaze attacks during World War II, were given an adapted form of the Posttraumatic Stress Disorder Checklist-Civilian and a set of questions regarding the effects of their World War II experiences on seven clusters of 42 interpersonal and personal characteristics (Adjustment Characteristics). Participants were categorized into two groups, those who served on the Emmons at any given time during World War II (Any Service), and those who were serving on the Emmons when it was sunk during the battle for Okinawa (Okinawa). Analyses using Mann-Whitney U tests indicated that the Okinawa group reported higher checklist scores, but the scores were unrelated to 41 of the 42 Adjustment Characteristics. Also, Spearman rank-order correlations were statistically insignificant for all comparisons between checklist scores and Adjustment Characteristic clusters, and the total number of positive responses to the 42 characteristics. In contrast, Mann-Whitney U and chi square analyses comparing the Any Service and Okinawa groups indicated statistically significant differences for 14 Adjustment Characteristics, 4 clusters of those characteristics, and the total number of positive responses: The Okinawa group reported poorer outcomes in each comparison. Many of these differences were among Adjustment Characteristics evocative of the attributes of Lee's Agape love style. The findings suggest that for the survivors of the Emmons, the presence or absence of a traumatic event was a better predictor of adjustment to civilian life than the reported severity of PTSD symptoms.  相似文献   
225.
The relationships of Universal Orientation with Right-Wing Authoritarianism and Social Dominance Orientation were examined in two studies. Undergraduate students from various universities completed three measures. 314 participated in Study 1 and 461 participated in Study 2. Scores on the Universal Orientation scale correlated weakly with those on the Right-Wing Authoritarianism scale (r = -.14 for both samples) and moderately with the Social Dominance Orientation scale (r = -.50 for Sample 1 and r = -.36 for Sample 2). Low Cronbach alphas for the Universal Orientation scale (alpha = .68 for the first sample and alpha = .60 for the second sample) suggest the scale requires revision.  相似文献   
226.
Classroom exams can assess students' knowledge of only a subset of the material taught in a course. What are the implications of this approach for long-term retention? Three experiments (N = 210) examined how taking an initial test affects later memory for prose materials not initially tested. Experiment 1 shows that testing enhanced recall 24 hr later for the initially nontested material. This facilitation was not seen for participants given additional study opportunities without initial testing. Experiment 2 extends this facilitative effect to a within-subjects design. Experiment 3 demonstrates that this facilitation can be modulated by conscious strategies. These results have implications for educational practice and the theoretical developments of the testing effect, associative memory, and retrieval inhibition.  相似文献   
227.
228.
This paper seeks to demonstrate the possibility of manipulating the frequency of stuttering using virtual reality environments (VREs). If stuttering manifests itself in VREs similarly to the way it manifests itself in real world interactions, then VREs can provide a controlled, safe, and confidential method for treatment practice and generalization. Though many researchers and clinicians recognize the need for generalization activities in the treatment of stuttering, achieving generalization in a clinical setting poses challenges to client confidentiality, safety, and the efficient use of a professionals’ time. Virtual reality (VR) technology may allow professionals the opportunity to enhance and assess treatment generalization while protecting the safety and confidentiality of their clients. In this study, we developed a VR job interview environment which allowed experimental control over communication style and gender of interviewers. In this first trial, persons who stutter (PWS) experienced both challenging and supportive VR job interview conditions. The percentage of stuttered syllables was calculated for both interviews for each participant. Self-reported ratings of communication apprehension and confidence were also obtained, and were not significantly correlated with stuttering severity. Results indicated that interviewer communication style affected the amount of stuttering produced by participants, with more stuttering observed during challenging virtual interviews. Additionally, the amount of stuttering observed during the VR job interviews was significantly, positively correlated with the amount of stuttering observed during an interview with the investigator prior to VR exposure. Participants’ subjective reports of the VR experience indicate reactions similar to those they report experiencing in the real world. Possible implications for the use of VR in the assessment and treatment of stuttering are discussed.

Educational objectives: After reading this article, the reader will be able to—(1) list some of the challenges to treatment generalization; (2) describe how virtual reality technology can assist in alleviating some of these challenges; (3) describe how the frequency of stuttering varies across two different virtual environments.  相似文献   

229.
We explored college students' discrimination of complex visual stimuli that involvedmultiple-item displays. The items in each of the displays could be all the same, all different, or diverse mixtures of some same and some different items. The participants had to learn which of two arbitrary responses was correct for each of the displays without being told about the sameness or differentness of the stimuli. We observed a general improvement in discrimination performance--a rise in choice accuracy and a fall in reaction time-as the number of icons in the display was increased, even when the participants had been trained from the outset with displays containing different numbers of items and when smaller numbers of items were not randomly distributed but grouped in the center of the display. The participants' discrimination behavior also depended on the mixture of same and different items in the displays. Striking individual differences in the participants' discrimination behavior disclosed that people sometimes respond as do pigeons and baboons trained with a similar task. This and previous related research suggest that variability discrimination may lie at the root of same-different categorization behavior.  相似文献   
230.
In 3 studies (N = 188) we tested the hypothesis that children use a perceptual access approach to reason about mental states before they understand beliefs. The perceptual access hypothesis predicts a U-shaped developmental pattern of performance in true belief tasks, in which 3-year-olds who reason about reality should succeed, 4- to 5-year-olds who use perceptual access reasoning should fail, and older children who use belief reasoning should succeed. The results of Study 1 revealed the predicted pattern in 2 different true belief tasks. The results of Study 2 disconfirmed several alternate explanations based on possible pragmatic and inhibitory demands of the true belief tasks. In Study 3, we compared 2 methods of classifying individuals according to which 1 of the 3 reasoning strategies (reality reasoning, perceptual access reasoning, belief reasoning) they used. The 2 methods gave converging results. Both methods indicated that the majority of children used the same approach across tasks and that it was not until after 6 years of age that most children reasoned about beliefs. We conclude that because most prior studies have failed to detect young children's use of perceptual access reasoning, they have overestimated their understanding of false beliefs. We outline several theoretical implications that follow from the perceptual access hypothesis.  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