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821.
This study investigated whether a prior context influenced lexical access as indexed by participants' electrophysiological response in the N1 from 132 to 192 ms poststimulus. Ambiguous, high-frequency (HF), and low-frequency (LF) words were presented in neutral and biasing contexts. Event-related potentials (ERPs) for ambiguous words were compared with those for unambiguous HF (word form) and LF (word meaning) control words. Word frequency effects in the N1 extended previous ERP findings. A marginal effect of context for LF words provided electrophysiological support for the context-by-frequency interaction shown in reaction time paradigms. In neutral context, responses to ambiguous words were comparable to responses to HF words, and in biasing context (where context instantiated the subordinate sense), responses to ambiguous words were comparable to responses to LF words. The results establish temporal parameters for the early operation of context in lexical access. These constraints are more consistent with an interactive than a modular account. 相似文献
822.
Rats were given a choice between a smaller, immediately available reward and a larger reward available after a delay. In one phase, the reward was food and in another phase, the reward was water. Constant delays were added between the choice presentation and the delivery of the reward alternatives. As the time between choice and reward delivery increased from 0 to 25 s, all rats (except one in the water phase) reversed their preference from the smaller, sooner alternative to the larger, later alternative. These findings extend the generality of the preference-reversal animal model to qualitatively different reinforcers. Furthermore, the presence of both impulsive and self-control choices within the same animal is consistent with the view that self-control may be understood as choice behavior, and that species differences in self-control may be differences in degree, not kind. 相似文献
823.
Gitlin LN Belle SH Burgio LD Czaja SJ Mahoney D Gallagher-Thompson D Burns R Hauck WW Zhang S Schulz R Ory MG;REACH Investigators 《Psychology and aging》2003,18(3):361-374
Meta-analysis was used to examine pooled parameter estimates of 9 active compared with 6 control conditions of the Resources for Enhancing Alzheimer's Caregiver Health (REACH) project at 6 months on caregiver burden and depressive symptoms. Associations of caregiver characteristics and outcomes were examined. For burden, active interventions were superior to control conditions (p = .022). Also, active interventions were superior to control conditions for women versus men and for caregivers with lower education versus those with higher education. For depressive symptoms, a statistically significant association of group assignment was found for Miami's family therapy and computer technology intervention (p = .034). Also, active interventions were superior to control conditions for Hispanics, nonspouses, and caregivers with lower education. Results suggest interventions should be multicomponent and tailored. 相似文献
824.
Most research on early language learning focuses on the objects that infants see and the words they hear in their daily lives, although growing evidence suggests that motor development is also closely tied to language development. To study the real-time behaviors required for learning new words during free-flowing toy play, we measured infants’ visual attention and manual actions on to-be-learned toys. Parents and 12-to-26-month-old infants wore wireless head-mounted eye trackers, allowing them to move freely around a home-like lab environment. After the play session, infants were tested on their knowledge of object-label mappings. We found that how often parents named objects during play did not predict learning, but instead, it was infants’ attention during and around a labeling utterance that predicted whether an object-label mapping was learned. More specifically, we found that infant visual attention alone did not predict word learning. Instead, coordinated, multimodal attention–when infants’ hands and eyes were attending to the same object–predicted word learning. Our results implicate a causal pathway through which infants’ bodily actions play a critical role in early word learning. 相似文献
825.
Aim
There is increasing interest in relational depth and its relevance and benefits for clients receiving therapy in a number of different therapeutic orientations. This research set out to draw together the available evidence from a wide range of therapies about clients' experiences of relational depth. The aim was to identify approaches that create the conditions where relational depth is more likely to be facilitated. The research focused on clients' views, given the increasing emphasis on their experiences in therapy.Methodology
A systematic search of papers published in English between January 1996 and September 2022 was conducted using EBSCO Host, Google Scholar and citation chaining. Twenty-seven papers met the inclusion criteria, and a thematic analysis was conducted on these papers.Findings
Six themes were identified: (1) establishing dialogue with the client's inner world, (2) working with attachment in therapy, (3) responding sensitively to the client's beliefs and values, (4) deepening the client's understanding of the therapist, (5) addressing ruptures in therapy and (6) the client's role in meeting at relational depth.Conclusion
Facilitating the client's experience of relational depth can support and enhance many aspects of therapeutic practice and in itself may contribute to healing. Therapists who offer warmth and genuine engagement are more able to build confidence and trust, as long as these conditions are received by their clients. It is the clients who ultimately decide whether or not to share their deepest feelings. 相似文献826.
Robert J. Duncan Kirsten L. Anderson Yemimah A. King Jennifer K. Finders Sara A. Schmitt David J. Purpura 《Infant and child development》2023,32(1):e2381
Despite support for the importance of early language environments, little is known about the naturally occurring experiences children have in preschool settings. The current study sample included 91 children (Mage = 4.72 years; 56% male; 67% White) from 23 preschool classrooms and nearly 1500 h of language environment data from three waves throughout the preschool year. Of the sociodemographic characteristics, family income is most closely related to children's preschool language environments. A standard deviation increase in family income was related to children hearing approximately one million more adult words in their preschool classroom. However, conversational turns were the more robust predictor of vocabulary skills with effect sizes around 0.20, depending on model specification. Theoretical and policy implications of these findings are discussed. 相似文献
827.
The role of the noradrenergic system in cognitive function was studied by using the alpha-2 adrenoceptor antagonist idazoxan to increase noradrenergic activity. Rats were trained in a complex maze task for food reward. They were left undisturbed for a 4-week "forgetting" period and were treated with idazoxan, just before the retention test. The dose of idazoxan used had previously been shown to enhance firing of units of the locus coeruleus and to increase noradrenaline (NE) turnover in the forebrain. This pharmacological treatment effectively alleviated forgetting, while control rats showed significant decrement compared to their performance at the last training trial. A control experiment showed that the facilitative effect was not on learning or on ongoing performance of the task, since there was no effect on simple acquisition. The results are taken as support for the notion that NE plays a role in memory retrieval processes. 相似文献
828.
829.
Sara J. Shettleworth 《Psychonomic bulletin & review》1994,1(4):451-456
The contributions of this symposium on behavior systems are summarized and evaluated by considering two questions: (1) What is a behavior system? (2) What use to the learning theorist are behavior systems? Two examples of behavior systems from the classical ethological literature are compared with the behavior systems discussed in the symposium, and some similarities and differences in the type of analyses used are discussed. Analysis of the pre-organized species-typical behavior systems relevant to the unconditioned stimuli or reinforcers in learning experiments can contribute performance rules and better understanding of the conditions and contents of learning. The organization of behavior systems can also provide important clues to the neural circuitry underlying behavior, and a behavior systems approach can raise novel questions concerning learning and behavioral development. Possible future directions for the behavior systems approach are briefly discussed. 相似文献
830.
The purpose of this study was to test Nelles and Barlow's (1988) hypothesis that spontaneous panic attacks are rare or nonexistent prior to adolescence as children lack the ability to make the internal, catastrophic attributions (i.e., thoughts of losing control, going crazy, or dying) characteristic of panic according to the cognitive model (Clark, 1986). Conceptions of panic attacks, including the understanding of symptoms and causes, and cognitive interpretations of the somatic symptoms of panic were examined in children from Grades 3, 6, and 9. A significant main effect for grade was found for conceptions of panic attacks, with third graders receiving significantly lower scores than sixth and ninth graders. However, the majority of all children, regardless of age, tended to employ internal (e.g., I'd think I was scared or nervous) rather than external (e.g., I'd think I was feeling that way because of the temperature or the weather) explanations of panic attacks. No significant grade differences were found for the tendency to make internal versus external and catastrophic versus noncatastrophic attributions in response to the somatic symptoms of panic. When presented with panic imagery in a panic induction phase, children, regardless of age, made more internal and noncatastrophic attributions. Finally, internal attributional style in response to negative outcomes and anxiety sensitivity were found to be significant predictors of internal, catastrophic attributions. The challenge that these findings pose to Nelles and Barlow's hypothesis, and their relevance for understanding children's cognitive interpretations of panic symptomatology are discussed. 相似文献