全文获取类型
收费全文 | 13734篇 |
免费 | 584篇 |
国内免费 | 13篇 |
专业分类
14331篇 |
出版年
2023年 | 72篇 |
2021年 | 118篇 |
2020年 | 213篇 |
2019年 | 263篇 |
2018年 | 358篇 |
2017年 | 352篇 |
2016年 | 372篇 |
2015年 | 267篇 |
2014年 | 346篇 |
2013年 | 1531篇 |
2012年 | 609篇 |
2011年 | 652篇 |
2010年 | 390篇 |
2009年 | 419篇 |
2008年 | 566篇 |
2007年 | 563篇 |
2006年 | 571篇 |
2005年 | 521篇 |
2004年 | 479篇 |
2003年 | 504篇 |
2002年 | 487篇 |
2001年 | 244篇 |
2000年 | 221篇 |
1999年 | 217篇 |
1998年 | 199篇 |
1997年 | 213篇 |
1996年 | 192篇 |
1995年 | 169篇 |
1994年 | 158篇 |
1993年 | 153篇 |
1992年 | 140篇 |
1991年 | 152篇 |
1990年 | 135篇 |
1989年 | 120篇 |
1988年 | 88篇 |
1987年 | 117篇 |
1986年 | 127篇 |
1985年 | 162篇 |
1984年 | 160篇 |
1983年 | 138篇 |
1982年 | 130篇 |
1981年 | 143篇 |
1980年 | 124篇 |
1979年 | 108篇 |
1978年 | 118篇 |
1977年 | 108篇 |
1976年 | 107篇 |
1975年 | 94篇 |
1974年 | 104篇 |
1973年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
We are constantly exposed to our own face and voice, and we identify our own faces and voices as familiar. However, the influence
of self-identity upon self-speech perception is still uncertain. Speech perception is a synthesis of both auditory and visual
inputs; although we hear our own voice when we speak, we rarely see the dynamic movements of our own face. If visual speech
and identity are processed independently, no processing advantage would obtain in viewing one’s own highly familiar face.
In the present experiment, the relative contributions of facial and vocal inputs to speech perception were evaluated with
an audiovisual illusion. Our results indicate that auditory self-speech conveys a processing advantage, whereas visual self-speech
does not. The data thereby support a model of visual speech as dynamic movement processed separately from speaker recognition. 相似文献
922.
This investigation examined the measurement properties of the Three Domains of Disgust Scale (TDDS). Principal components analysis in Study 1 (n = 206) revealed three factors of Pathogen, Sexual, and Moral Disgust that demonstrated excellent reliability, including test-retest over 12 weeks. Confirmatory factor analyses in Study 2 (n = 406) supported the three factors. Supportive evidence for the validity of the Pathogen and Sexual Disgust subscales was found in Study 1 and Study 2 with strong associations with disgust/contamination and weak associations with negative affect. However, the validity of the Moral Disgust subscale was limited. Study 3 (n = 200) showed that the TDDS subscales differentially related to personality traits. Study 4 (n = 47) provided evidence for the validity of the TDDS subscales in relation to multiple indices of disgust/contamination aversion in a select sample. Study 5 (n = 70) further highlighted limitations of the Moral Disgust subscale given the lack of a theoretically consistent association with moral attitudes. Lastly, Study 6 (n = 178) showed that responses on the Moral Disgust scale were more intense when anger was the response option compared with when disgust was the response option. The implications of these findings for the assessment of disgust are discussed. 相似文献
923.
The Mindful Attention Awareness Scale (MAAS) has the longest empirical track record as a valid measure of trait mindfulness. Most of what is understood about trait mindfulness comes from administering the MAAS to relatively homogenous samples of Caucasian adults. This study rigorously evaluates the psychometric properties of the MAAS among Chinese adolescents attending high school in Chengdu, China. Classrooms from 24 schools were randomly selected to participate in the study. Three waves of longitudinal data (N = 5,287 students) were analyzed. MAAS construct, nomological, and incremental validity were evaluated as well as its measurement invariance across gender using latent factor analyses. Participants' mean age was 16.2 years (SD = 0.7), and 51% were male. The 15-item MAAS had adequate fit to the one-dimensional factor structure at Wave 1, and this factor structure was replicated at Wave 2. A 6-item short scale of the MAAS fit well to the data at Wave 3. The MAAS maintained reliability (Cronbach's α = .89-.93; test-restest r = .35-.52), convergent/discriminant validity, and explained additional variance in mental health measures beyond other psychosocial constructs. Both the 15- and 6-item MAAS scales displayed at least partial factorial invariance across gender. The findings suggest that the MAAS is a sound measure of trait mindfulness among Chinese adolescents. To reduce respondent burden, the MAAS 6-item short-scale provides an option to measure trait mindfulness. 相似文献
924.
Heyward FD Walton RG Carle MS Coleman MA Garvey WT Sweatt JD 《Neurobiology of learning and memory》2012,98(1):25-32
Mounting evidence has established that diet-induced obesity (DIO) is associated with deficits in hippocampus-dependent memory. The bulk of research studies dealing with this topic have utilized rats fed a high-fat diet as an experimental model. To date, there has been a paucity of research studies that have established whether the memory deficits exhibited in DIO rats can be recapitulated in mice. Moreover, the majority of experiments that have evaluated memory performance in rodent models of DIO have utilized memory tests that are essentially aversive in nature (i.e., Morris water maze). The current study sought to fill an empirical void by determining if mice maintained on a high-fat diet exhibit deficits in two non-aversive memory paradigms: novel object recognition (NOR) and object location memory (OLM). Here we report that mice fed a high-fat diet over 23 weeks exhibit intact NOR, albeit a marked impairment in hippocampus-dependent OLM. We also determined the existence of corresponding aberrations in gene expression within the hippocampus of DIO mice. DIO mice exhibited significant reductions in both SIRT1 and PP1 mRNA within the hippocampus. Our data suggest that mice maintained on a high-fat diet present with impaired hippocampus-dependent spatial memory and a corresponding alteration in the expression of genes that have been implicated in memory consolidation. 相似文献
925.
David Gudelunas 《Sexuality & culture》2012,16(4):347-365
This essay is an exploratory study of the uses and gratifications of social networking applications and sites widely utilized by gay men. Based on findings from six different focus groups and intercept interviews with gay and bisexual men, this essay explores the motivations and perceived benefits of social networking sites that allow for the creation of a virtual community of sexual minorities. This paper also considers these technological developments as part of a larger history of gay men communicating with other gay men within a culture where talk about homosexuality is closely policed and often restricted. Through a uses and gratifications approach, this essay discusses the needs and motivations that bring gay men online to social network sites, how they manage multiple identities online and the resulting gratifications of their online activity. 相似文献
926.
Objective: To empirically identify the appropriate symptom threshold for hyperactivity-impulsivity for diagnosis of ADHD in adults. Method: Participants were 88 adults (M [SD] age = 41.69 [11.78] years, 66% female, 16% minority) meeting formal DSM-IV criteria for ADHD combined or predominantly inattentive subtypes based on a structured diagnostic interview keyed to DSM-IV (Conners' Adult ADHD Diagnostic Interview for DSM-IV [CAADID]). All participants also completed the Conners' Adult ADHD Rating Scale (CAARS), which was normed on the general adult population and includes subscales for DSM-IV inattentive and DSM-IV hyperactive-impulsive symptoms. A T-score threshold of 65 (at least 1.5 SD above population mean) on the CAARS DSM-IV hyperactive-impulsive dimension was used to identify participants with empirically elevated symptom severity. Results: Of 88 participating adults, 48 (55%) had a T-score of at least 65 (1.5 SD) on the CAARS DSM-IV Hyperactive-Impulsive scale. Of these, only 25 (52%) met the DSM-IV cutoff of six hyperactive-impulsive symptoms on the CAADID. Thus, approximately half of those who reported empirically elevated hyperactive-impulsive complaints on the CAARS did not concurrently meet the six-symptom DSM-IV cutoff on the CAADID. An alternative cutoff of four hyperactive-impulsive symptoms on the CAADID captured 39 (81%) cases identified by the CAARS. Conclusion: In adults, mandating at least six hyperactive-impulsive symptoms excludes a significant percentage (almost half) of adults who are at least 1.5 SD above the population mean on a dimensional measure of hyperactivity-impulsivity. These data provide a compelling basis for lowering the symptom threshold of hyperactivity-impulsivity for adults in the DSM-5. 相似文献
927.
928.
929.
930.
Disrupting the reactivation of hippocampal neurons during sleep impairs memory consolidation in rats. However, the functional importance of reactivation during awake states is unknown. An experiment in which awake reactivation was disrupted suggests that this phenomenon could adaptively guide behavior by linking previous learning with the current state of the world. 相似文献