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191.
Rats were trained in a step-down inhibitory avoidance task using a 0.2-mA footshock and tested 6 h later. Exposure to a session of extinction (animals placed on the box where they had been trained and left to explore it freely for 100.0 s without footshocks) or to a series of 10 tones presented in another box, in the dark, 2 h after training, hindered retention test performance. The immediate post-training ip administration of epinephrine (5.0 micrograms/kg), ACTH-(1-24) (0.2 microgram/kg), or lysine-vasopressin (10.0 micrograms/kg) facilitated retention test performance and cancelled the effect of extinction, but not the retroactive interference caused by exposure to the tones. These results support the concept that post-training facilitation induced by the hormones is due to a strengthening of the memory trace left by the avoidance task, whereas the retroactive interference caused by the tones occurs independently from that process and is more likely due to the incorporation of postevent information. 相似文献
192.
193.
Vala J Pereira CR Oliveira Lima ME Leyens JP 《Personality & social psychology bulletin》2012,38(4):491-504
Within the framework of intergroup relations, the authors analyzed the time people spent evaluating ingroup and outgroup members. They hypothesized that White participants take longer to evaluate White targets than Black targets. In four experiments, White participants were slower to form impressions of White than of Black people; that is, they showed an intergroup time bias (ITB). In Study 1 (N = 60), the ITB correlated with implicit prejudice and homogeneity. Study 2 (N = 60) showed that the ITB was independent of the type of trait in question (nonstereotypical vs. stereotypical). Study 3 (N = 100) demonstrated that ITB correlates with racism measured 3 months beforehand, is independent of motivation to control prejudice, and is not an epiphenomenon of homogeneity. In Study 4 (N = 40) participants not only showed the ITB in a racialized social context but also displayed it following a minimal group manipulation. 相似文献
194.
195.
Espejo B Cortés MT del Río BM Giménez JA Gómez C 《The Spanish journal of psychology》2012,15(1):256-264
There is a phenomenon contributing to the current pattern of alcohol consumption among youngsters in Spain known as "botellon". From research financed by the National Plan on Drugs (2004-2007), data of 6009 youngsters (14-25 years old) were collected from three Spanish cities. Only individuals who engage in intensive consumption of alcohol (n = 2807) have been included. The purpose of this work has been to identify the different types of consumers at risk through a cluster analysis and to establish a profile for each particular group. Four groups were differentiated by age, gender, alcohol consumption and years of consumption. It was observed that adolescent students and university students of the same sex consume similar quantities of alcohol, and justify their consumption alluding to personal factors, whereas university students refer to issues related to control of leisure. The consumption by males is the highest, and they are the most likely to seek drunkenness. They associate to a lesser degree their consumption with the possibility of developing an addictive process. In general, all youngsters consider that their consumption will have no negative consequences. These results indicate the need to come up with different alternatives, addressing the particularities of each group. 相似文献
196.
Dos SF Da Silva PA Ribeiro FS Dias AL Frigério MC Dellatolas G von Aster M 《The Spanish journal of psychology》2012,15(2):513-525
Numerical cognition is based on two components - number processing and calculation. Its development is influenced by biological, cognitive, educational, and cultural factors. The objectives of the present study were to: i) assess number processing and calculation in Brazilian children aged 7-12 years from public schools using the Zareki-R (Battery of neuropsychological tests for number processing and calculation in children, Revised; von Aster & Dellatolas, 2006) in order to obtain normative data for Portuguese speakers; ii) identify how environment, age, and gender influences the development of these mathematical skills; iii) investigate the construct validity of the Zareki-R by the contrast with the Arithmetic subtest of WISC-III. The sample included 172 children, both genders, divided in two groups: urban (N = 119) and rural (N = 53) assessed by the Zareki-R. Rural children presented lower scores in one aspect of number processing; children aged 7-8 years demonstrated an inferior global score than older; boys presented a superior performance in both number processing and calculation. Construct validity of Zareki-R was demonstrated by high to moderate correlations with Arithmetic subtest of WISC-III. The Zareki-R therefore is a suitable instrument to assess the development of mathematical skills, which is influenced by factors such as environment, age, and gender. 相似文献
197.
Lara N. Ferreira Pedro L. Ferreira Luis N. Pereira Donna Rowen 《Applied research in quality of life》2012,7(2):193-208
The SF-6D suffers from a floor effect where for patient groups in severe health a significant number of patients report the
lowest level of health possible for some dimensions, meaning the SF-6D cannot capture a deterioration in health for these
patients. This paper presents a feasibility study aimed at reducing this floor effect. A modified SF-6D classification system
was proposed that incorporated an additional level in each of the physical functioning and role limitations dimensions. The
modified classification system was valued by a Portuguese general population sample (n = 140) using the Portuguese SF-6D protocol. A sample of 82 health states were valued and several regression models were estimated
to produce preference weights to predict health state values for all states defined by the modified classification system.
Estimations at the individual level were performed using 950 health state valuations. Models were analyzed in terms of logical
consistency of coefficients, overall fit and predictive ability and were compared to Portuguese SF-6D models. The additional
severity levels included in the modified classification system have significant decrements in health state values. These additional
severity levels do not significantly impact on the modelled preference weights (the regression coefficients) of other levels
across all dimensions. This feasibility study modified the SF-6D to reduce the floor effect. This study presents one option
and further research in this area is encouraged. 相似文献
198.
Beatriz O. M. Lobo Alice E. Brunnet Kimberly K. Ecker Luiziana S. Schaefer Adriane X. Arteche Gustavo Gauer 《Journal of aggression, maltreatment & trauma》2013,22(8):863-875
Cognitive models of trauma propose that maladaptive cognitions in children and adolescents are causally implicated in the unfolding and maintenance of posttraumatic response. The objective of this study was to evaluate the psychometric properties of the Child Posttraumatic Cognitions Inventory (CPTCI). The sample included 131 children and adolescents. The psychometric properties of the CPTCI were examined, including reliability and convergent validity. The results showed high internal consistency for both CPTCI total scale (α = .90) and its subscales (CPTCI–PC α = .88 and CPTCI–SW α = .79) and a 2-component solution explaining 37.63% of the variance of CPTCI. Convergent validity evidence was obtained through correlations with the Trauma Symptom Checklist for Children and Children’s Depression Inventory. Findings suggest that CPTCI instruments are reliable and had adequate evidence of validity. 相似文献
199.
This study set out to compare British and Sri Lankan young people's (students) beliefs concerning the causes, manifestations, and cures of schizophrenia. One hundred and seventy-five British and Sri Lankan participants completed the three-part questionnaire in their mother tongue. It was hypothesized that the Sri Lankans would have more negative and uninformed attitudes and beliefs about schizophrenia than the British. It was also hypothesized that the Sri Lankans would favour superstitious, family, and sociological causes to explain the development of schizophrenia, while the British would favour more biological explanations. These two hypotheses were confirmed after factor-analysing the internal structure of the three sections of the questionnaire. Even well-educated young people remain ignorant about one of the most challenging mental illnesses. 相似文献
200.
Diana Cruz Isabel Narciso Cícero Roberto Pereira Daniel Sampaio 《Journal of child and family studies》2014,23(7):1172-1181
The study of family factors, (namely, parenting, attachment and family functioning) that can either reduce or increase risk factors during adolescent development is crucial to the early identification of adolescents at risk for self-destructive thoughts and behaviors (SDTB). Altough several studies have highlighted the role of family factors, few have analysed the joint impact of parenting styles and attachment in SDT. This study aimed to: (1) to identify the dimensions of parenting styles and parental attachment that predict SDTB; (2) to determine the mediation effect of cohesion on the relation between these predictors and reports of SDTB; and (3) to analyze sex and age differences in the abovementioned process. Participants included 1,266 Portuguese adolescents with a mean age of 15.9 years. Structural equation modeling demonstrated that paternal and maternal rejection and paternal control were the most accurate predictors of SDTB, emphasizing their role as risk factors for maladaptive trajectories with reports of SDTB. Results clearly emphasized the relevancy of the fathers’ role in such maladaptive trajectories. Additionally, a mediation effect of cohesion and a moderation of sex were also found. This study highlights the importance of intervening with the family in preventive and therapeutic contexts regarding adolescents’ well-being and their relationship with parents. 相似文献