全文获取类型
收费全文 | 2395篇 |
免费 | 253篇 |
国内免费 | 124篇 |
专业分类
2772篇 |
出版年
2024年 | 5篇 |
2023年 | 43篇 |
2022年 | 27篇 |
2021年 | 42篇 |
2020年 | 107篇 |
2019年 | 145篇 |
2018年 | 99篇 |
2017年 | 140篇 |
2016年 | 111篇 |
2015年 | 82篇 |
2014年 | 106篇 |
2013年 | 420篇 |
2012年 | 70篇 |
2011年 | 102篇 |
2010年 | 54篇 |
2009年 | 114篇 |
2008年 | 122篇 |
2007年 | 98篇 |
2006年 | 90篇 |
2005年 | 109篇 |
2004年 | 77篇 |
2003年 | 77篇 |
2002年 | 65篇 |
2001年 | 71篇 |
2000年 | 44篇 |
1999年 | 34篇 |
1998年 | 44篇 |
1997年 | 34篇 |
1996年 | 23篇 |
1995年 | 52篇 |
1994年 | 16篇 |
1993年 | 6篇 |
1992年 | 12篇 |
1991年 | 8篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1987年 | 3篇 |
1985年 | 11篇 |
1984年 | 12篇 |
1983年 | 11篇 |
1982年 | 7篇 |
1981年 | 9篇 |
1980年 | 13篇 |
1979年 | 10篇 |
1978年 | 7篇 |
1977年 | 11篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1974年 | 4篇 |
1973年 | 1篇 |
排序方式: 共有2772条查询结果,搜索用时 15 毫秒
1.
PIA RISHOLM MOTHANDER 《Scandinavian journal of psychology》1992,33(1):20-28
The study aimed at establishing the predictive validity of clinical observations and interview data collected during late pregnancy. 40 pregnant women from a Swedish non-risk population were interviewed about psychological and somatic well-being, significant relationships and delivery expectations. Pregnancy adjustment was also assessed by the maternal health clinic midwife. After the birth of the child, the mothers were interviewed in the delivery hospital and during home visits when the infants were 2 and 6 weeks, and 4, 8 and 12 months old. The results showed that pregnancy adjustment, as assessed by the mothers themselves, acted as a significant predictor of the early maternal adjustment and the adjustment towards the end of the infant's first year. The midwives' assessments significantly predicted maternal adjustment towards the end of the first year. Pregnancy data did not correlate with maternal delivery experiences. 相似文献
2.
Genetic counselors have participated in the Michigan Newborn Screening Program on a contractual basis since 1988. Their role includes newborn screening education and training, newborn nursery site visits, and monitoring newborn screening in hospitals. Their impact has been to improve the quality of newborn screening services by reducing errors and increasing completion of data fields on newborn screening cards, improving hospital nursery cooperation and problem solving, and enhancing health department response to specific problems. 相似文献
3.
Instruction in baby massage and the Burleigh Relaxation Bath technique was given to one-half of our sample of 32 couples who had just had their first child. This brief intervention, given at 4 weeks post-partum, led to beneficial behavioural and psychological effects for the family system when assessed at 12 weeks postpartum. Depression and marital satisfaction were assessed with mothers and fathers at 4 weeks and 12 weeks after the birth of their child, and self-esteem was measured at 12 weeks only. The mothers and fathers who were shown baby bathing and massage techniques showed higher degrees of marital satisfaction and self-esteem, as well as lower levels of depression at 12 weeks post-partum, than parents who did not receive instruction. It seems likely that brief interventions which educate new parents concerning functional techniques of baby care may favourably affect their feelings of competence and be of benefit to the entire family system. 相似文献
4.
PAULA LYYTINEN 《Scandinavian journal of psychology》1989,30(3):177-184
The effects of modelling on pretend play were studied in children between 2.6 and 3.6 years of age by examining changes both in the action and language-based expressions of pretending. Three modelled scenes were demonstrated with the same realistic toys used by the child in the pre-modelling phase. The results gave support to the idea of the effectiveness of modelling. The effects of the modelled scenes were clearest among children whose pre-modelling play consisted of object-centred actions including few of pretending. The post-modelling play of this subgroup showed better quality of action and language categories and integration measures. Among the decentred players no significant action benefit could be achieved. This might have been an outcome of the contextual limits of the toy material and of the drop of play motivation caused by the model interruption. However, these children expressed verbal pretending revealing significant pre-post effects for inventive utterances. 相似文献
5.
Two cebus monkeys, with many years of experience matching a variety of static visual stimuli (forms and colors) within a standard matching-to-sample paradigm, were trained to press a left lever when a pair of displayed static stimuli were the same and to press a right lever when they were different. After learning the same/different task, the monkeys were tested for transfer to dynamic visual stimuli (flashing versus steady green disks), with which they had no previous experience. Both failed to transfer to the dynamic stimuli. A third monkey, also with massive past experience matching static visual stimuli, was tested for transfer to the dynamic stimuli within our standard matching paradigm, and it, too, failed. All 3 subjects were unable to reach a moderate acquisition criterion despite as many as 52 sessions of training with the dynamic stimuli. These results provide further evidence that, in monkeys, the matching (or identity) concept has a very limited reach; they consequently do not support the view held by some theorists that an abstract matching concept based on physical similarity is a general endowment of animals. 相似文献
6.
Subjects in Santa Barbara, California, and Groningen, The Netherlands, participated in a seven-person social dilemma game, presented in terms of a conservation of resources problem. Prior to their decision making in the social dilemma game, subject's social motive (altruistic, cooperative, individualistic, competitive) was assessed by means of two different classification procedures. On the basis of previous research findings American subjects were expected to display relatively more competitive social motives, and Dutch subjects relatively more cooperative ones. However, no indications of crosscultural differences were found neither with regard to the distribution of social motives nor with regard to the amount of resources taken for self in the social dilemma game. In both locations, competitive subjects took most resources for self, individualistic subjects took next most, cooperative subjects took less than individualists, and altruistic subjects took the least. In addition to predictive validity, indices of the convergent validity of two social motive assessment procedures were described. 相似文献
7.
The pathological left-handedness syndrome 总被引:3,自引:0,他引:3
A clinical syndrome of pathological left-handedness (PLH) is proposed to identify the pattern of correlative changes in lateral development associated with early brain injury in some manifest left-handers. This syndrome is believed to be caused by a hemispheric lesion that is predominantly left-sided (or bilateral asymmetric), which onsets before Age 6, and which encroaches upon the critical speech zones of the frontotemporal/frontoparietal cortex. The pattern of changes may include any or all of the following features: shifts in manual dominance, trophic changes in the extremities, transfer of hemispheric speech, and/or intrahemispheric reorganization of visuospatial cognitive functions. Although some of these correlates of PLH have long been known, they have not been recognized as an interrelated pattern of traits that constitute a clinical syndrome. Identification of these individuals, all manifest left-handers, will be shown to have implications for diagnosis/remediation and for models of recovery of function. 相似文献
8.
Jordi Peña-Casanova Teresa Roig-Rovira Amalia Bermudez Eduard Tolosa-Sarro 《Brain and language》1985,26(1):63-71
A 47-year-old man with a left temporo-occipital infarct in the area of the posterior cerebral artery is presented. The neuropsychological examination did not reveal aphasia or gross mental deficits. The patient presented with alexia without agraphia, color agnosia, but few visual perceptual deficits. The main impairment was in confrontation naming; he was incapable of naming objects and pictures, not from lack of recognition (excluding visual agnosia) but from lack of access to the appropriate word (optic aphasia). The patient also exhibited a deficit in the evocation of gesture from the visual presentation of an object (optic apraxia) and a difficulty in "conjuring up" visual images of objects (impaired visual imagery) and loss of dreams. The fundamental deficit of this patient is tentatively explained in terms of visuoverbal and visuogestural disconnection and a deficit of mental imagery. 相似文献
9.
10.
Robert S. Pierce 《Brain and language》1984,22(2):339-349
This study assessed 13 aphasic subjects' knowledge of the multiple meanings of homographs. The results indicated that the various meanings were less available to aphasic subjects than to normal subjects. In addition, specific meanings became less available as they became less typical although the number of meanings associated with a homograph did not influence performance. Aphasia type also did not influence performance. Performance on the experimental test was significantly correlated with auditory comprehension level and picture naming ability. The results were related to recent findings on semantic organization in aphasia. 相似文献