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81.
Neurodevelopmental delay has been documented in up to 97.5% of HIV-infected children in Soweto who were not yet on antiretroviral treatment (ART). With growing numbers of children in South Africa being successfully treated with ART, the effects of ART on neurocognitive functioning in children require investigation. The objective of this study was to determine the extent of neurodevelopmental delay in stable HIV-infected preschool children (aged five to six years) receiving ART and compare it to an apparently healthy (unconfirmed HIV-status) group of preschool children. Thirty HIV-infected preschool children (virologically and immunologically stable on ART for more than one year) were conveniently sampled from 350 eligible children on ART at the Harriet Shezi Children's Clinic in Soweto, Johannesburg. The comparison group comprised 30 well-nourished preschool children attending the Lilian Ngoyi Primary Health Care Clinic in Soweto for routine immunizations. Each child was assessed using the Griffiths Mental Development Scales-Extended Revised Version (GMDS-ER), at a single point in time. The overall developmental z-scores on GMDS-ER were <-2 (indicating severe delay) in 27 (90%) children in the HIV-infected group compared to 23 (76%) in the comparison group (p?=?0.166). Mental handicap (overall GQ?相似文献   
82.
What happens when people suppress their emotions when they sacrifice for a romantic partner? This multimethod study investigates how suppressing emotions during sacrifice shapes affective and relationship outcomes. In Part 1, dating couples came into the laboratory to discuss important romantic relationship sacrifices. Suppressing emotions was associated with emotional costs for the partner discussing his or her sacrifice. In Part 2, couples participated in a 14-day daily experience study. Within-person increases in emotional suppression during daily sacrifice were associated with decreases in emotional well-being and relationship quality as reported by both members of romantic dyads. In Part 3, suppression predicted decreases in relationship satisfaction and increases in thoughts about breaking up with a romantic partner 3 months later. In the first two parts of the study, authenticity mediated the costly effects of suppression. Implications for research on close relationships and emotion regulation are discussed.  相似文献   
83.
This study examined the hypothesis drawn from epidemiological data that beliefs and affective reactions of male second, fifth, and eighth graders, undergraduates, and adults in response to a series of four simulated bicycle collisions would show decreased expectation and avoidance of injury in comparison to females. This study also contrasted two additional hypotheses, one suggesting an invincibility belief in teenagers, producing a curvilinear age trend, with risky cognitions increasing from second grade, peaking at eighth grade, and then decreasing in adulthood. The other hypothesis suggested that with exposure, risky beliefs increased linearly, due to desensitization to cues of risk. As predicted, female participants did expect more fear and pain, and less exhilaration, and braked sooner after seeing the hazard than male participants. Linear rather than curvilinear age patterns emerged across films, revealing that the youngest participants anticipated more fear and less exhilaration than older participants. These results parallel developmental trends in which females and younger participants who anticipate more serious consequences are at lower risk for bicycle injury than are males, older children, and adolescents. Limitations of this analogue study and potential questions for both future research and the application of injury prevention techniques are explored.  相似文献   
84.
Against the backdrop of increasingly blurred boundaries between work and nonwork, the purpose of this study was to investigate the implications of employees’ work-to-life boundary enactment for well-being. Using border/boundary theory (as reported by Ashforth, Kreiner, & Fugate (Academy of Management Review 25(3):472–491, 2000) and Clark (Human Relations 54(6):747–770, 2000)) and the effort-recovery model (as reported by Meijman & Mulder (Handbook of work and organizational psychology vol. 2 55–53, 1998)), we developed a research model that links work-to-life integration enactment to exhaustion and impaired work-life balance via lack of recovery activities (as reported by Sonnentag, Journal of Applied Psychology 88(3):518–528, 2003). The model was tested using structural equation modeling. Our sample consisted of N = 1916 employees who were recruited via an online panel service. Results showed that employees who scored high on work-to-life integration enactment reported less recovery activities and in turn were more exhausted and experienced less work-life balance. Our study contributes to the existing literature on boundary management by investigating the well-being implications of work-to-life boundary enactment and by suggesting and testing recovery as an underlying mechanism. In doing so, we link boundary enactment with existing theory of the work-life interface. Based on our review of existent research on boundary management and well-being, we disentangle previous contradictory findings. Understanding of the well-being implications of boundary enactment and underlying mechanisms can help human resource professionals and practitioners to devise and implement organizational policies and interventions that enable employees to develop boundary management strategies that are sustainable in that they do not impair employees’ well-being.  相似文献   
85.
Allen  Tammy D.  Eby  Lillian T. 《Sex roles》2004,50(1-2):129-139
In this study we examined the relationship between mentor gender, protégé gender, mentorship characteristics (e.g., mentorship type, mentorship duration, mentor experience), and mentoring functions provided as reported by mentors. Drawing on research regarding diversified mentorships and interpersonal relationships, we proposed that mentoring effectiveness would vary as a function of the gender of the mentorship participants and the characteristics of the relationship. As hypothesized, several interesting gender differences emerged from the data. Male mentors reported providing more career mentoring to their protégés, whereas female mentors reported providing more psychosocial mentoring. Contrary to expectations, mentors in informal mentorships did not report providing more mentoring than did mentors in formal mentorships. The findings demonstrate the importance of examining mentoring from the perspective of the mentor.  相似文献   
86.
Male songbirds learn to produce song within a limited phase early in life; however they continue to learn to recognize songs in adulthood. Studies looking at Zenk activation after exposure to songs learned early in life for song production and songs learned in adulthood show opposite patterns of activation, suggesting distinct neural mechanisms may be involved in these two forms of learning. In this study, we look at IEG Zenk activation in auditory regions NCM and CMM of song sparrows (Melospiza melodia) to see whether recent exposure to song in adulthood leads to greater or decreased Zenk activation upon hearing that song versus a novel song. We found significantly lower activation in birds exposed to previously heard songs versus novel songs in vNCM but not dNCM, though further analysis suggest an overall trend in NCM. We found no significant difference in the amount of activation to previously heard songs vs. novel songs in CMM. These results support previous findings suggesting that activation is reduced to learned stimuli; we discuss possible implications of these findings in relation to song production learning early in life and song recognition learning in adulthood.  相似文献   
87.
This paper is intended to serve as a stimulus to the thinking of students regarding ways in which they might better organize their symbolic training experiences. It illustrates how one supervisee derived a conceptual framework from the literature that made it easier to track process events and organize her training experiences. The authors believe it is important to discover ways to facilitate the learning process without operationalizing the approach.director of training and research and professor of family therapy in the same department.  相似文献   
88.
Learning a new motor skill can induce neuronal plasticity in rats. Within motor cortex, learning-induced plasticity includes dendritic reorganization, synaptogenesis, and changes in synapse morphology. Behavioral studies have demonstrated that learning requires protein synthesis. It is likely that some of the proteins synthesized during learning are involved in, or the result of, learning-induced structural plasticity. We predicted the expression of proteins involved in neural plasticity would be altered in a learning dependent fashion. Long-Evans rats were trained on a series of motor tasks that varied in complexity, so that the effects of activity could be teased apart from the effects of learning. The motor cortices were examined for MAP2 and synaptophysin protein using Western blotting and immunohistochemistry. Western blotting revealed that expression of MAP2 was not detectably influenced by learning, whereas synaptophysin expression increased on day 1, 3, and 5 of complex motor skill learning. Expression of MAP2 does not seem to indicate difficulty of task or duration of training time, whereas increases in synaptophysin expression, which appear diffusely across the cortex, seem to be correlated with the first 5 days of motor skill learning. Similar findings with GAP-43 suggest the change in synaptophysin may coincide with synapse formation. Immunohistochemistry did not reveal any localized changes in protein expression. These data indicate a difference in learning-induced expression in the mammalian brain compared to reports in the literature, which have often focused on stimulation to induce alterations in protein expression.  相似文献   
89.
    
Past research has demonstrated that cognitive triage (weak-strong-weak recall pattern) is a robust effect that optimises children's recall. The aim of the current research was to determine whether adults’ free recall also exhibits triage and whether cognitive triage is less marked with older than younger adults’ recall. Younger and older adults memorised 16 unrelated words until all items were recalled perfectly. The triage pattern existed for both the younger and older adults’ recall and there was evidence for age differences in triage. Our results are consistent with claims of greater verbatim forgetting and increased susceptibility to output interference with age in adulthood. Further research is needed to determine whether fuzzy-trace theory adequately explains the ageing of triage and what factors play a role in the development of this pattern of recall in adulthood.  相似文献   
90.
    
During the 1930s and 1940s hundreds of children were diagnosed in Tel Aviv's Psycho-Hygiene Clinic for Children as suffering mainly from organic retardation or neurosis. Those diagnosed as retarded or “educationally impaired” were sent either to special education institutions or to vocational schools and, in severe cases, to closed institutions. The children diagnosed as neurotic were usually treated individually at the clinic or in private clinics by mental health specialists and remained with their families. In most cases those diagnosed as retarded were children of Mizrahi origin whilst the children diagnosed as suffering from neurosis were of Ashkenazi origin. This paper argues that the diagnosis of so many children as problematic, as well as the relationship between their diagnosis and their ethnic origin, embodies two basic trends in yishuv society, especially prominent during the British Mandate: the labelling of the Mizrahim in general, and Mizrahi children in particular, as culturally and mentally inferior; and a high degree of intervention on the part of mental health specialists. The involvement of psychiatrists, psychoanalysts and specialists in fields such as mental hygiene and Psycho-Hygiene created a pathologization of social and economic problems, and by doing so obscured the harsh realities of immigration.  相似文献   
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