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361.
Lesesne CA Lewis KM White CP Green DC Duffy JL Wandersman A 《American journal of community psychology》2008,41(3-4):379-392
In the field of teen pregnancy prevention many efficacious prevention programs are available but adoption of these programs is slow at the community level. In this article, we present a multi-site, capacity-building effort called the Promoting Science-based Approaches to Teen Pregnancy Prevention project (PSBA) as a case example of a proactive application of the Interactive System Framework (ISF) for dissemination and implementation. The ISF is a multi-system model leading to dissemination and implementation of science-based prevention programming through the work of three interactive systems: The "Prevention Delivery," "Prevention Support," and "Prevention Synthesis & Translation" Systems. This article describes the proactive use of the ISF to conceptualize and bolster the PSBA program's goal of assisting local prevention partners in the use of science-based approaches (SBA) to prevent teen pregnancy. PSBA uses all three systems of the ISF to facilitate practice improvements and offers valuable research opportunities to investigate factors related to dissemination and implementation processes across these systems. Describing our application of this framework highlights the feasibility of actively using the ISF to build prevention infrastructure and to guide large-scale prevention promotion strategies in the area of teen pregnancy prevention. The program's ongoing evaluation is presented as an example of early efforts to develop an evidence base around the ISF. Research implications are discussed. 相似文献
362.
Williams DA Lawson C Cook R Mather AA Johns KW 《Journal of experimental psychology. Animal behavior processes》2008,34(1):94-105
Rats (rattus norvegicus) anticipated the arrival of a food pellet unconditioned stimulus (US) even when the conditioned stimulus (CS) signaled no overall change or a substantial decrease in the overall rate of US occurrence. Pellet USs were scheduled probabilistically in the intertrial interval at either an equivalent rate (Experiment 1) or a four times higher rate (Experiments 2 and 3) than in the CS, which included one fixed-time target US. Conditioning has been said to involve learning "whether" (contingency) the CS signals a change in the US, and if so, "when" (contiguity) the US is scheduled to arrive. Our results suggest that "when" trumps "whether," challenging the received view that a positive CS-US contingency is necessary for successful conditioning. 相似文献
363.
Bonnie E. Stephens Carla M. Bann W. Kenneth Poole Betty R. Vohr 《Infant mental health journal》2008,29(6):570-587
Effects on a family of a child with chronic illness have been described. The Impact on Family Scale (IOF) was developed to measure these effects. The impact of extremely low birth weight (ELBW) infants with neurodevelopmental impairment on families is unknown. This study determined IOF scores for families of ELBW infants with increasing degree of impairment at 18 months and identified factors that increase vulnerability to impact. A total of 3,849 ELBW infant survivors born at the 16 centers of the National Institute of Child Health and Human Development Neonatal Research Network between January 1993 and February 2001 were assessed at 18 to 22 months. Infants were divided into four groups by degree of impairment. IOF scores were analyzed by impairment group. Multivariate analyses assessed effects of impairment, social/demographic factors, unmet service needs, and resource utilization on the IOF. A total of 1,624 (42.2%) infants had moderate/severe impairment. Increasing severity of impairment was associated with higher IOF scores. Severity of impairment contributed 6% of variance to the IOF scores. Twenty‐one percent of variance was contributed by additional medical needs, low socioeconomic status (SES), and lack of social support. Although increasing severity of impairment impacts families of ELBW infants, significantly more impact is contributed by additional medical needs, low SES, and lack of social support. 相似文献
364.
365.
A milestone in human development is coming to recognize that how something looks is not necessarily how it is. We tested appearance-reality understanding in chimpanzees (Pan troglodytes) with a task requiring them to choose between a small grape and a big grape. The apparent relative size of the grapes was reversed using magnifying and minimizing lenses so that the truly bigger grape appeared to be the smaller one. Our Lens test involved a basic component adapted from standard procedures for children, as well as several components designed to rule out alternative explanations. There were large individual differences in performance, with some chimpanzees’ responses suggesting they appreciated the appearance-reality distinction. In contrast, all chimpanzees failed a Reverse Contingency control test, indicating that those who passed the Lens test did not do so by learning a simple reverse contingency rule. Four-year-old children given an adapted version of the Lens test failed it while 4.5-year-olds passed. Our study constitutes the first direct investigation of appearance-reality understanding in chimpanzees and the first cross-species comparison of this capacity. 相似文献
366.
When natural language input contains grammatical forms that are used probabilistically and inconsistently, learners will sometimes reproduce the inconsistencies; but sometimes they will instead regularize the use of these forms, introducing consistency in the language that was not present in the input. In this paper we ask what produces such regularization. We conducted three artificial language experiments, varying the use of determiners in the types of inconsistency with which they are used, and also comparing adult and child learners. In Experiment 1 we presented adult learners with scattered inconsistency - the use of multiple determiners varying in frequency in the same context - and found that adults will reproduce these inconsistencies at low levels of scatter, but at very high levels of scatter will regularize the determiner system, producing the most frequent determiner form almost all the time. In Experiment 2 we showed that this is not merely the result of frequency: when determiners are used with low frequencies but in consistent contexts, adults will learn all of the determiners veridically. In Experiment 3 we compared adult and child learners, finding that children will almost always regularize inconsistent forms, whereas adult learners will only regularize the most complex inconsistencies. Taken together, these results suggest that regularization processes in natural language learning, such as those seen in the acquisition of language from non-native speakers or in the formation of young languages, may depend crucially on the nature of language learning by young children. 相似文献
367.
Relational Services 总被引:1,自引:0,他引:1
Recent research projects have looked for social innovations, i.e., people creating solutions outside the mainstream patterns of production and consumption. An analysis of these innovations
indicates the emergence of a particular kind of service configuration—defined here as relational services—which requires intensive interpersonal relations to operate. Based on a comparative analysis between standard and relational services, we propose to the Service Design discipline an interpretative framework able to reinforce its ability to deal with
the interpersonal relational qualities in services, indicating how these qualities can be understood and favored by design
activities, as well as the limits of this design intervention. Martin Buber’s conceptual framework is presented as the main
interpretative basis. Buber describes two ways of interacting (“I-Thou” and “I-It”). Relational services are those most favoring “I-Thou” interpersonal encounters.
相似文献
Ezio ManziniEmail: |
368.
Carla Bagnoli 《Ethical Theory and Moral Practice》2009,12(5):477-493
This article argues that immoralists do not fully enjoy autonomous agency because they are not capable of engaging in the
proper form of practical reflection, which requires relating to others as having equal standing. An adequate diagnosis of
the immoralist’s failure of agential authority requires a relational account of reflexivity and autonomy. This account has
the distinctive merit of identifying the cost of disregarding moral obligations and of showing how immoralists may become
susceptible to practical reason. The compelling quality of reason should not be represented as the capacity to force them
to abide by morality on pain of incoherence. Rather, its authority (and objectivity) is shown when it presents them with the
prospect of a transition that makes sense for them to undertake. 相似文献
369.
The study provided a preliminary test of the intergenerational continuity of maternal psychopathic features in a non-referred elementary aged sample of children. Consistent with dominant etiological models and recent behavioral genetics research, a direct association was expected between maternal and child affective features of psychopathy (i.e., callous-unemotional or CU traits). Potential mediators representative of alternative transmission mechanisms were assessed including parenting dysfunction, parental hostility/interpersonal insensitivity, and child impulsivity. Behavioral features of psychopathy were also assessed and were predicted to bear weaker and more indirect parent-child associations. A mixed sex sample of 83 children accompanied by a biological mother were administered a multi-informant rating-scale battery including separate parent (i.e., Levenson Self-Report Psychopathy Scale) and child (i.e., Antisocial Process Screening Device) measures of psychopathy. Consistent with prediction, a significant association was documented between maternal and child CU traits (r=.22). Additionally, a slightly weaker association and statistical trend (r=.21) was observed in the relation between maternal and child interpersonal features of the psychopathy construct. Contrary to prediction, all documented associations were fully mediated by parental hostility and parenting dysfunction. Given the preliminary nature of study findings, implications for developmental modeling and future intergenerational continuity research are discussed. 相似文献
370.
Mutation at the TrkB PLC{gamma}-docking site affects hippocampal LTP and associative learning in conscious mice 下载免费PDF全文
Gruart A Sciarretta C Valenzuela-Harrington M Delgado-García JM Minichiello L 《Learning & memory (Cold Spring Harbor, N.Y.)》2007,14(1):54-62
Previous in vitro studies have characterized the electrophysiological properties and molecular events associated with long-term potentiation (LTP), but as yet there are no in vivo data from molecular-level dissection that directly identify LTP as the biological substrate for learning and memory. Understanding whether the molecular pathways required for learning are also those generating LTP when measured directly on the relevant circuit of a learning animal is clearly important, although so far has proved technically difficult. Here, for the first time, we combine highly defined genetic mouse models with behavior and in vivo recordings. We recorded the activity-dependent changes taking place at the CA3-CA1 synapses during the acquisition and extinction of a simple form of an associative learning task in mice carrying point mutations on specific docking sites of TrkB receptors (trkB(SHC), trkB(PLC)). The learning task consisted of a classical eyeblink conditioning using a trace paradigm. The conditioned stimulus (CS) consisted of a tone and was followed by a periorbital electrical shock as an unconditioned stimulus (US). The US started 500 msec after the end of the CS. We show that a single pulse presented to the Schaffer collateral-commissural pathway during the CS-US interval evoked a monosynaptic field excitatory postsynaptic potential (fEPSP) at the CA1 pyramidal cells, with a slope linearly related to learning evolution in controls and trkB(SHC) mutants, but the relationship was impaired in trkB(PLC) mice. These data support a link between the PLCgamma-docking site downstream of TrkB and the activity-dependent synaptic changes evoked at the CA3-CA1 synapses during associative learning in conscious mice, and indicate that TrkB PLCgamma-site-activated molecular pathway(s) underlie both associative learning and LTP triggered at the CA3-CA1 synapse. 相似文献