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171.
Auditory‐motor adaptation is reduced in adults who stutter but not in children who stutter 下载免费PDF全文
Ayoub Daliri Elizabeth A. Wieland Shanqing Cai Frank H. Guenther Soo‐Eun Chang 《Developmental science》2018,21(2)
Previous studies have shown that adults who stutter produce smaller corrective motor responses to compensate for unexpected auditory perturbations in comparison to adults who do not stutter, suggesting that stuttering may be associated with deficits in integration of auditory feedback for online speech monitoring. In this study, we examined whether stuttering is also associated with deficiencies in integrating and using discrepancies between expected and received auditory feedback to adaptively update motor programs for accurate speech production. Using a sensorimotor adaptation paradigm, we measured adaptive speech responses to auditory formant frequency perturbations in adults and children who stutter and their matched nonstuttering controls. We found that the magnitude of the speech adaptive response for children who stutter did not differ from that of fluent children. However, the adaptation magnitude of adults who stutter in response to auditory perturbation was significantly smaller than the adaptation magnitude of adults who do not stutter. Together these results indicate that stuttering is associated with deficits in integrating discrepancies between predicted and received auditory feedback to calibrate the speech production system in adults but not children. This auditory‐motor integration deficit thus appears to be a compensatory effect that develops over years of stuttering. 相似文献
172.
Matthew L. Hall Inge‐Marie Eigsti Heather Bortfeld Diane Lillo‐Martin 《Developmental science》2018,21(3)
Developmental psychology plays a central role in shaping evidence‐based best practices for prelingually deaf children. The Auditory Scaffolding Hypothesis (Conway et al., 2009) asserts that a lack of auditory stimulation in deaf children leads to impoverished implicit sequence learning abilities, measured via an artificial grammar learning (AGL) task. However, prior research is confounded by a lack of both auditory and language input. The current study examines implicit learning in deaf children who were (Deaf native signers) or were not (oral cochlear implant users) exposed to language from birth, and in hearing children, using both AGL and Serial Reaction Time (SRT) tasks. Neither deaf nor hearing children across the three groups show evidence of implicit learning on the AGL task, but all three groups show robust implicit learning on the SRT task. These findings argue against the Auditory Scaffolding Hypothesis, and suggest that implicit sequence learning may be resilient to both auditory and language deprivation, within the tested limits. A video abstract of this article can be viewed at: https://youtu.be/EeqfQqlVHLI [Correction added on 07 August 2017, after first online publication: The video abstract link was added.] 相似文献
173.
Human milk cortisol concentration predicts experimentally induced infant fear reactivity: moderation by infant sex 下载免费PDF全文
Saara Nolvi Henna‐Maria Uusitupa David J. Bridgett Henri Pesonen Anna‐Katariina Aatsinki Eeva‐Leena Kataja Riikka Korja Hasse Karlsson Linnea Karlsson 《Developmental science》2018,21(4)
Little consideration has been given to the possibility of human infant development being shaped via lactocrine programming, and by breast milk cortisol levels specifically. Despite animal models indicating that glucocorticoid (GC) exposure via lactation might modify brain development and behavior, only one study has reported that milk cortisol levels were positively associated with infant negative affectivity, especially fearfulness and sadness—early emerging risk factors for internalizing difficulties such as anxiety. The aim of the current study was to investigate whether human milk cortisol is associated with mother‐reported fearfulness and experimentally induced infant fear reactivity. Mother‐infant dyads (n = 65) enrolled in the FinnBrain Cohort Study participated. Breast milk samples were obtained 2.5 months postpartum, and milk cortisol concentrations were ascertained using validated luminescence immunoassay methodology. Infant fear reactivity was assessed using maternal reports 6 months postpartum and in a laboratory 8 months postpartum. There was a significant interaction between infant sex and milk cortisol such that higher milk cortisol was related to higher infant fear reactivity in a laboratory setting in girls (β = 0.36, p = .04) but not in boys (β = ?0.15, p = .40). Milk cortisol was not associated with mother‐reported infant fearfulness. Results suggest that higher human milk cortisol concentrations are associated with elevated experimentally induced fear in infancy. Findings support lactocrine programming, and suggest that mothers may “communicate” vital information about stressful environments via cortisol contained in breast milk, shaping girls' early emotional reactivity. 相似文献
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175.
Theory‐of‐Mind development and early sibling relationships after the birth of a sibling: Parental discipline matters 下载免费PDF全文
This study investigated relations among children's Theory‐of‐Mind (ToM) development, early sibling interactions, and parental discipline strategies during the transition to siblinghood. Using a sample of firstborn children and their parents (N = 208), we assessed children's ToM before the birth of a sibling and 12 months after the birth, and sibling interactions (i.e., positive engagement and antagonism) and parental discipline strategies (i.e., child‐centred and parent‐centred discipline) at 4 and 8 months in the first year of siblinghood. Structural equation modelling analyses revealed that children's ToM before the birth of the sibling predicted children's positive engagement with the infant sibling, whereas children's antagonistic behaviours towards the infant sibling negatively predicted children's ToM at 12 months, but only when mothers used low levels of child‐centred discipline. These findings emphasize the role of parents in the development of young children's social‐cognitive understanding in the context of early sibling interactions.
Highlights
- This study investigated relations among firstborns' Theory‐of‐Mind (ToM), early sibling relationships, and parental discipline during the first year of siblinghood.
- Multigroup analyses showed that ToM predicted higher sibling positive engagement, and early sibling antagonism predicted poorer ToM when mothers used low child‐centred discipline.
- Parental discipline plays an important role in the development of young children's social understanding and sibling relationships as early as the first year of siblinghood.
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177.
Intersectional experiences of discrimination in a low‐resource urban community: An exploratory latent class analysis 下载免费PDF全文
Valerie A. Earnshaw Lisa Rosenthal Kathryn Gilstad‐Hayden Amy Carroll‐Scott Trace S. Kershaw Alycia Santilli Jeannette R. Ickovics 《Journal of community & applied social psychology》2018,28(2):80-93
There have been increasing calls for the application of an intersectionality framework to understand and address discrimination and health inequities among diverse communities. Yet there have been theoretical debates regarding to whom intersectionality applies and how intersectional experiences of discrimination are associated with health outcomes. The current study aimed to contribute to these theoretical debates and inform practical applications to reduce health inequities. Data were drawn from a community health survey in New Haven, CT (N = 1,293 adults) and analysed using latent class analysis. Results yielded 4 classes. Members of the 4 classes were similar sociodemographically. Three classes of participants reported experiencing discrimination, and members of these classes had greater stress, higher rates of smoking and sleep disruption, and worse overall health than members of the class reporting no discrimination. Members of 2 classes made multiple, or intersectional, attributions for discrimination, and members of these classes reported the most frequent discrimination. Findings suggest that community members who are sociodemographically similar may have diverse discrimination experiences. Multilevel interventions that address multiple forms of discrimination (e.g., racism and sexism) may hold promise for reducing discrimination and, ultimately, health inequities within low‐resource urban community settings. 相似文献
178.
David Webber Marina Chernikova Arie W. Kruglanski Michele J. Gelfand Malkanthi Hettiarachchi Rohan Gunaratna Marc‐Andre Lafreniere Jocelyn J. Belanger 《Political psychology》2018,39(3):539-556
Deradicalization of terrorists constitutes a critical component of the global “war on terror.” Unfortunately, little is known about deradicalization programs, and evidence for their effectiveness is derived solely from expert impressions and potentially flawed recidivism rates. We present the first empirical assessment of one such program: the Sri Lankan rehabilitation program for former members of the Liberation Tigers of Tamil Eelam (a terrorist organization that operated in Sri Lanka until their defeat in 2009). We offer evidence that deradicalization efforts that provided beneficiaries with sustained mechanisms for earning personal significance significantly reduced extremism after 1 year (Study 1). We also found that upon release, beneficiaries expressed lower levels of extremism than their counterparts in the community (Study 2). These findings highlight the critical role of personal significance in deradicalization efforts, offer insights into the workings of deradicalization, and suggest practical methods for improving deradicalization programs worldwide. 相似文献
179.
Support for Leader's Decisions in Conflict and Negotiation: Women Do Not Benefit From Relevant Expertise While Men Do 下载免费PDF全文
In the present research, we examined the role of leaders' domain‐specific expertise and gender as affecting individuals' evaluation of proposals related to intergroup conflict. Across three studies, conducted in two different conflict‐related contexts (Israeli‐Palestinian conflict and the refugee crisis in Europe), we showed that men and women do not equally benefit from domain‐specific expertise. Having high (compared to low) domain‐specific expertise positively affected participants' attitudes towards the proposal when its author was a man but not when she was a woman. We further demonstrate that specific characteristics of the proposal (i.e., security relevance) and of the participants (i.e., level of sexism) affect reactions to different negotiation proposals. Our findings suggest that even when women acquire relevant knowledge and experience, they do not benefit from them as much as men. One implication of these findings is that training and enhancing women's expertise may not be enough to eliminate gender bias. 相似文献
180.