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   2932篇
  免费   302篇
  国内免费   681篇
  2024年   5篇
  2023年   59篇
  2022年   64篇
  2021年   104篇
  2020年   119篇
  2019年   122篇
  2018年   136篇
  2017年   130篇
  2016年   145篇
  2015年   99篇
  2014年   101篇
  2013年   266篇
  2012年   179篇
  2011年   221篇
  2010年   198篇
  2009年   194篇
  2008年   220篇
  2007年   297篇
  2006年   247篇
  2005年   236篇
  2004年   171篇
  2003年   116篇
  2002年   71篇
  2001年   48篇
  2000年   45篇
  1999年   44篇
  1998年   38篇
  1997年   28篇
  1996年   18篇
  1995年   24篇
  1994年   25篇
  1993年   15篇
  1992年   11篇
  1991年   14篇
  1990年   10篇
  1989年   15篇
  1988年   6篇
  1987年   10篇
  1986年   5篇
  1985年   10篇
  1984年   8篇
  1983年   5篇
  1982年   6篇
  1981年   9篇
  1980年   6篇
  1979年   8篇
  1976年   2篇
  1975年   1篇
  1973年   1篇
  1972年   2篇
排序方式: 共有3915条查询结果,搜索用时 31 毫秒
161.
In reading music, the acquisition of pitch information depends mostly on the spatial position of notes, hence more spatial processing, whereas the acquisition of temporal information depends mostly on the visual features of notes and object recognition. This study used both electrophysiological and behavioral methods to compare the processing of pitch and duration in reading single musical notes. It was observed that in the early stage of note reading, identification of pitch could elicit greater N1 and N2 amplitude than identification of duration at the parietal lobe electrodes. In the later stages of note reading, identifying pitch elicited a greater negative slow wave at parietal electrodes than did identifying note duration. The sustained contribution of parietal processes for pitch suggests that the dorsal pathway is essential for pitch processing. However, the duration task did not elicit greater amplitude of any early ERP components than the pitch task at temporal electrodes. Accordingly, a double dissociation, suggesting involvement of the dorsal visual stream, was not observed in spatial pitch processing and ventral visual stream in processing of note durations.  相似文献   
162.
This paper first discusses the relationship between Kullback–Leibler information (KL) and Fisher information in the context of multi-dimensional item response theory and is further interpreted for the two-dimensional case, from a geometric perspective. This explication should allow for a better understanding of the various item selection methods in multi-dimensional adaptive tests (MAT) which are based on these two information measures. The KL information index (KI) method is then discussed and two theorems are derived to quantify the relationship between KI and item parameters. Due to the fact that most of the existing item selection algorithms for MAT bear severe computational complexity, which substantially lowers the applicability of MAT, two versions of simplified KL index (SKI), built from the analytical results, are proposed to mimic the behavior of KI, while reducing the overall computational intensity.  相似文献   
163.
Twin and family studies have shown that genetic factors play a role in the development of conduct disorder (CD). The purpose of this study was to identify genetic variants associated with CD using a family-based association study. We used 4,720 single nucleotide polymorphisms (SNPs) from the Illumina Panel and 11,120 SNPs from the Affymetrix 10K GeneChips genotyped in 155 Caucasian nuclear families from Genetic Analysis Workshop (GAW) 14, a subset from the Collaborative Study on the Genetics of Alcoholism (COGA). 20 SNPs had suggestive associations with CD (p < 10−3), nine of which were located in known genes, including ADAM10 (rs383902, p = 0.00036) and CAMK2A (rs2053053, p = 0.00098). Our results were verified using the International Multi-Center ADHD Genetics Project (IMAGE) dataset. In conclusion, we identified several loci associated with CD. Especially, the two genes (ADAM10 and CAMK2A) have been reported to be associated with Alzheimer’s disease, bipolar disorder and depression. These findings may serve as a resource for replication in other populations.  相似文献   
164.
Wang  Xueshi 《Philosophia》2022,50(1):337-351
Philosophia - In this article, I critique a moral argument developed in Frances Kamm’s Intricate Ethics: Rights, Responsibilities, and Permissible Harm. The argument, which I label the Best...  相似文献   
165.
To explore the relationship between parental phubbing (PP) and adolescent online hostility and its' psychological mechanism, 689 Chinese adolescents were recruited to complete a paper-and-pencil questionnaire. We took cyber flaming (CF) as an overall category for hostile online communication to investigate the relationship between PP and CF and the mediating role of perspective-taking (PT) in this relationship and examined whether there is a sex difference in this process. After controlling the average daily online time, the results showed that PP predicted adolescent CF positively. The relationship between PP and CF was partially mediated by PT. The effect of PP on PT was moderated by sex, with the result being significant only for boys. Related findings and future directions were discussed.  相似文献   
166.
研究以心理健康双因素模型为视角,运用元分析技术梳理了留守儿童歧视知觉与积极和消极心理健康的关系,并探究了影响其关系的调节变量。通过文献检索与筛选,共27篇中英文文献,56个独立样本纳入元分析,包含被试17146名。结果显示,歧视知觉与积极心理健康指标呈显著的负相关关系(r=-0.298),与消极心理健康指标呈显著的正相关关系(r=0.365)。调节效应分析发现,留守儿童歧视知觉与积极心理健康的关系受到歧视知觉测量工具的影响,与消极心理健康的关系受到歧视知觉测量工具、学龄段以及消极结果类型的影响。同时,元回归分析发现,文献年份对歧视知觉与积极心理健康指标关系的调节效应显著; 性别对歧视知觉与积极和消极心理健康关系的调节作用均不显著。研究结果进一步明确了留守儿童歧视知觉与积极和消极心理健康的关系,为探索提升留守儿童心理社会适应的新路径提供了借鉴。  相似文献   
167.
Given the prevalence of imagery appeals in today’s marketplace, the current research studies the role of mental imagery in how consumers process and react to advertisements with different numbers of ad claims. Past research has proposed “three” as the magical number of ad claims that maximizes persuasion, with more than three ad claims increasing skepticism and reducing evaluation. In the current research, we replicate this so-called “charm of three” effect, but only when consumers do not engage in mental imagery; when they do, however, we find that the effect is moderated, in that more ad claims beyond three produces more favorable product evaluation. Additionally, we provide evidence that the moderating effect of mental imagery is driven by transportation and skepticism toward the ad claims, with mental imagery increasing transportation and decreasing skepticism when there are more than three ad claims. Our research contributes to a better understanding of the “charm of three” effect, its boundary conditions, and underlying mechanism.  相似文献   
168.
理性认知能力与社会偏好存在紧密的关联。文章简要回顾了经济决策理论从理性模型到有限理性模型和社会偏好模型的发展进程,论述了人们理性的局限性及其根源,并进一步探讨理性认知能力与社会偏好的关系。对人类以及灵长目动物的研究显示,有限理性可能是由根源于演化的适应性机制所导致。人类不公平厌恶的起源、个体公平能力的发展规律和表征公平的大脑结构上的证据表明,理性认知能力能让人更好地抑制自私性,实现更高层次的公平。  相似文献   
169.
为探讨城镇化进程中离乡农民的心理健康特点以及心理素质、相对剥夺感对其的影响,通过量表对1339名城乡居民进行调查。结果发现:离乡与留乡农民在幸福感、拥有生命意义感、感知控制感、心理素质方面显著低于城镇居民,在状态焦虑方面显著高于城镇居民; 离乡农民在抑郁上显著高于城镇居民,在感知控制感上显著高于留乡农民,在心理素质上显著低于留乡农民; 留乡农民在相对剥夺感上显著高于城镇居民; 离乡农民的幸福感、拥有生命意义感、感知控制感态与相对剥夺感呈显著负相关,与心理素质呈显著正相关; 离乡农民的抑郁、状态焦虑与相对剥夺感呈显著正相关,与心理素质呈显著负相关; 离乡农民的相对剥夺感与心理素质之间呈显著负相关。心理素质除了可以直接预测心理健康各项指标,还可以通过相对剥夺感的中介作用,间接预测幸福感、抑郁及状态焦虑。提升心理素质和降低相对剥夺感是离乡农民心理健康服务的重要切入点。  相似文献   
170.
Journal of Child and Family Studies - In this study, we examined the relationship continuity between parent–child relationships and friendships. Based on the theoretical framework of the...  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