全文获取类型
收费全文 | 760篇 |
免费 | 44篇 |
专业分类
804篇 |
出版年
2024年 | 1篇 |
2023年 | 13篇 |
2022年 | 13篇 |
2021年 | 10篇 |
2020年 | 15篇 |
2019年 | 23篇 |
2018年 | 51篇 |
2017年 | 36篇 |
2016年 | 26篇 |
2015年 | 24篇 |
2014年 | 28篇 |
2013年 | 103篇 |
2012年 | 57篇 |
2011年 | 68篇 |
2010年 | 35篇 |
2009年 | 19篇 |
2008年 | 54篇 |
2007年 | 45篇 |
2006年 | 41篇 |
2005年 | 22篇 |
2004年 | 22篇 |
2003年 | 17篇 |
2002年 | 12篇 |
2001年 | 9篇 |
2000年 | 4篇 |
1999年 | 11篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 1篇 |
1991年 | 3篇 |
1989年 | 4篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1976年 | 1篇 |
1969年 | 3篇 |
1966年 | 2篇 |
排序方式: 共有804条查询结果,搜索用时 0 毫秒
141.
Del Villar F García González L Iglesias D Perla Moreno M Cervelló EM 《Perceptual and motor skills》2007,104(2):355-365
This study deals with decision and execution behavior of tennis players during competition. The study is based on the expert-novice paradigm and aims to identify differences between both groups in the decision-making and execution variables in serve and shot actions in tennis. Six expert players (elite Spanish tennis players) and six novice players (grade school tennis players) took part in this study. To carry out this study, the observation protocol defined by McPherson and Thomas in 1989, in which control, decision-making and execution variables were included, was used, where it was applied to the performance of the tennis player in a real match situation. In the analysis, significant differences between experts and novices in decision-making and execution variables are found wherein it can be observed that experts display a greater ability to make the appropriate decisions, selecting the most tactical responses to put pressure on the opponent. Expert tennis players were also able to carry out forceful executions to their opponent with greater efficiency, making the opponent's response to a large extent more difficult. These findings are in accordance with those of McPherson and colleagues. 相似文献
142.
Palmero EI Ashton-Prolla P da Rocha JC Vargas FR Kalakun L Blom MB Azevedo SJ Caleffi M Giugliani R Schüler-Faccini L 《Journal of genetic counseling》2007,16(3):363-371
Hereditary breast cancer (HBC) accounts for 5–10% of breast cancer cases and it significantly increases the lifetime risk
of cancer. Our objective was to evaluate the sociodemographic variables, family history of cancer, breast cancer (BC) screening
practices and the risk profile of cancer affected or asymptomatic at-risk women that undergo genetic counseling for hereditary
breast cancer in public Brazilian cancer genetics services. Estimated lifetime risk of BC was calculated for asymptomatic
women using the Gail and Claus models. The majority of women showed a moderate lifetime risk of developing BC, with an average
risk of 19.7% and 19.9% by the Gail and Claus models, respectively. The average prior probability of carrying a BRCA1/2 gene mutation was 16.7% and overall only 32% fulfilled criteria for a hereditary breast cancer syndrome as assessed by family
history. We conclude that a significant number of individuals at high-risk for HBC syndromes may not have access to the benefits
of cancer genetic counseling in these centers. Contributing factors may include insufficient training of healthcare professionals,
disinformation of cancer patients; difficult access to genetic testing and/or resistance in seeking such services. The identification
and understanding of these barriers is essential to develop specific strategies to effectively achieve cancer risk reduction
in this and other countries were clinical cancer genetics is not yet fully established. 相似文献
143.
144.
The relationship of parenting styles with adolescents' outcomes was analyzed within a sample of Spanish adolescents. A sample of 1456 teenagers from 13 to 16 years of age, of whom 54.3% were females, reported on their parents' child-rearing practices. The teenagers' parents were classified into one of four groups (authoritative, authoritarian, indulgent, or neglectful). The adolescents were then contrasted on two different outcomes: (1) priority given to Schwartz's self-transcendence (universalism and benevolence) and conservation (security, conformity, and tradition) values and (2) level of self-esteem (appraised in five domains: academic, social, emotional, family and physical). The results show that Spanish adolescents from indulgent households have the same or better outcomes than adolescents from authoritative homes. Parenting is related with two self-esteem dimensions--academic and family--and with all the self-transcendence and conservation values. Adolescents of indulgent parents show highest scores in self-esteem whereas adolescents from authoritarian parents obtain the worst results. In contrast, there were no differences between the priority given by adolescents of authoritative and indulgent parents to any of the self-transcendence and conservation values, whereas adolescents of authoritarian and neglectful parents, in general, assign the lowest priority to all of these values. 相似文献
145.
Jiménez JE Hernández-Valle I Ramírez G Ortiz Mdel R Rodrigo M Estévez A O'Shanahan I García E Trabaue Mde L 《The Spanish journal of psychology》2007,10(1):52-67
This study was designed to assess the effects of four reading-training procedures for children with reading disabilities (RD) in a transparent orthography, with the aim of examining the effects of different spelling-to-sound units in computer speech-based reading. We selected a sample of 83 Spanish children aged between 7 years 1 month and 10 years 6 months (M = 105.2, SD = 7.8) whose pseudoword reading performance was below the 25th percentile and IQ > 90. The participants were randomly assigned to five groups: (a) the whole-word training group (WW) (n = 17), (b) the syllable training group (S)(n = 16), (c) the onset-rime training group (OR) (n = 17), (d) the phoneme training group (P) (n = 15), and (e) the untrained control group (n = 18). Children were pre- and post-tested in word recognition, reading comprehension, phonological awareness, and orthographic and phonological tasks. The results indicate that experimental groups who participated in the phoneme and syllable conditions improved their word recognition in comparison with the control group. In addition, dyslexics who participated in the phoneme, syllable, and onset-rime conditions made a greater number of requests during computer-based word reading under conditions that required extensive phonological computation (low frequency words and long words). Reading time, however, was greater for long words in the phoneme group during computer-based reading. These results suggest the importance of training phonological processes in improving word decoding in children with dyslexia who learn in a consistent orthography. 相似文献
146.
Luis Aguado Ana García-Gutierrez Ignacio Serrano-Pedraza 《Attention, perception & psychophysics》2009,71(1):9-25
Classification of faces as to their sex or their expression—with sex and expression varying orthogonally—was studied in three experiments. In Experiment 1, expression classification was influenced by sex, with angry male faces being classified faster than angry female faces. Complementarily, sex classification was faster for happy than for angry female faces. In Experiment 2, mutual interaction of sex and expression was also found when the participants were asked to classify top and bottom face segments. In Experiment 3, a face inversion effect was found for both sex and expression classification of whole faces. However, a symmetrical interaction between sex and expression was again found. The results are discussed in terms of configural versus feature processing in the perception of face sex and expression and of their relevance to face perception models that postulate independent processing of different facial features. 2009 The Psychonomic Society, Inc. 相似文献
147.
Alberto Maydeu-Olivares Uwe Kramp Carlos García-Forero David Gallardo-Pujol Donna Coffman 《Behavior research methods》2009,41(2):295-308
Despite a hundred years of questionnaire testing, no consensus has been reached on the optimal number of response alternatives
in rating scales. Differences in prior research may have been due to the use of various psychometric models (classical test
theory, item factor analysis, and item response theory) and different performance criteria (reliability, convergent/discriminant
validity, and internal structure of the questionnaire). Furthermore, previous empirical studies on this issue have tackled
the experimental design from a between-subjects perspective, thus ignoring intra-individual effects. In contrast with this
approach, we propose a within-subjects experimental design and a comprehensive statistical methodology using structural equation
models for studying all of these aspects simultaneously, therefore increasing statistical power. To illustrate the method,
two personality questionnaires were examined using a repeated measures design. Results indicated that as the number of response
alternatives increased, (1) internal consistency increased, (2) there was no effect on convergent validity, and (3) goodness
of fit worsened. Finally, the article assesses the practical consequences of this research for the design of future personality
questionnaires. 相似文献
148.
Fernando Gutiérrez Josep M. Peri Xavier Torres Xavier Caseras Manuel Valdés 《Journal of research in personality》2007
Serious problems persist concerning the conceptualization and measurement of the coping construct. This study examines the properties and factor structure of the COPE questionnaire, one of the most widely used instruments to measure coping, in a sample of 471 patients. A series of exploratory factor procedures are applied at the item- and scale-level, and the resulting solutions are tested both by their congruence with previously published structures and by confirmatory techniques. Our finding of three robust, generalizable, and parsimonious second-order dimensions—Engagement, Disengagement, and Help-Seeking—challenges the original structure. The results are discussed from an evolutionary perspective, on the assumption that the recognition of coping as the activation of vestigial defenses may make a substantial contribution to clarifying its functions and organization. 相似文献
149.
Miguel A. Garcá-Pérez 《Behavior research methods》1989,21(1):24-30
This paper presents a set of 128 halftone patterns on an 8 × 8 block size. The patterns have been designed to produce an acceptable gray-scale rendition when the halftone is seen from a distance and, at the same time, to allow comparisons to be made among the intensity values of individual pixels at a closer look. A Pascal program is also presented that produces halftones on an HP Laserjet+ laser printer, and sample halftones are shown. Finally, a method is proposed that prevents images digitized with a 4:3 aspect ratio from being distorted when halftones are printed at the usual 1:1 aspect ratio. 相似文献
150.
Fernando Menezes Campello de Souza 《Journal of mathematical psychology》1983,27(2):183-200
A new probabilistic binary choice model, which we call the mixed model is proposed. This model is used to give an interpretation of probabilistic choice behavior in terms of complete and partial orders. The model is used as a guide to disprove Jacob Marschak's conjecture that the binary random utility model is equivalent to the triangle inequality. Another result is presented concerning the relation between moderate stochastic transitivity and the triangle inequality. 相似文献