全文获取类型
收费全文 | 1155篇 |
免费 | 34篇 |
专业分类
1189篇 |
出版年
2019年 | 20篇 |
2018年 | 22篇 |
2017年 | 22篇 |
2016年 | 23篇 |
2015年 | 15篇 |
2014年 | 21篇 |
2013年 | 141篇 |
2012年 | 38篇 |
2011年 | 41篇 |
2010年 | 21篇 |
2009年 | 18篇 |
2008年 | 20篇 |
2007年 | 42篇 |
2006年 | 33篇 |
2005年 | 26篇 |
2004年 | 23篇 |
2003年 | 28篇 |
2002年 | 29篇 |
2001年 | 51篇 |
2000年 | 45篇 |
1999年 | 43篇 |
1998年 | 20篇 |
1997年 | 11篇 |
1995年 | 11篇 |
1994年 | 7篇 |
1993年 | 12篇 |
1992年 | 12篇 |
1991年 | 24篇 |
1990年 | 27篇 |
1989年 | 17篇 |
1988年 | 13篇 |
1987年 | 16篇 |
1986年 | 18篇 |
1985年 | 18篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 12篇 |
1980年 | 8篇 |
1979年 | 9篇 |
1978年 | 14篇 |
1976年 | 12篇 |
1975年 | 13篇 |
1974年 | 7篇 |
1973年 | 15篇 |
1972年 | 11篇 |
1970年 | 13篇 |
1969年 | 11篇 |
1968年 | 14篇 |
1967年 | 10篇 |
1966年 | 7篇 |
排序方式: 共有1189条查询结果,搜索用时 0 毫秒
991.
We compared the number of psychiatric admissions from the emergency room during the Christmas season, defined as the rate for the month of December, with those in other months. The psychiatric emergency rates were recorded for each month over six consecutive years, 1991 to 1997. The average number of emergency patients in none of the 12 months differed significantly from any of the remaining months (ANOVA, p > .05). Our data and those of other authors do not support the clinical lore that Christmas season is associated with higher rate of psychiatric emergencies. 相似文献
992.
The purpose of the present study was to assess whether there are differences in agility and coordination performance, anxiety about physique, perceived competence, and enjoyment between girls (n = 56) performing within mixed-sex versus all-female high school classes in physical education. A series of between-group comparisons yielded no significant differences between groups on measures of performance, perceived competence, and anxiety about physique; however, the mixed-sex group reported significantly greater enjoyment on both psychomotor tests than the all-female group (ps < or = .05). Results are discussed within other contexts such as sport motivation and Weiss and Chaumeton's (1992) theory of youth sport development. 相似文献
993.
The lifetime incidence of mood disorders is twice as great in women compared with men, with the highest risk occurring during the childbearing years. The management of mental illness during pregnancy and lactation is a particularly complex clinical situation. The cornerstone of such a clinical decision is a completion of an assessment of the risks of the illness vs the risks of treatment. The following article reviews the factors influencing infant outcome and outlines the essential elements of the process of determining risk for the use of psychotropics in women during pregnancy and lactation. As the available data rapidly change, the facets of the risk benefit assessment are consistent and often the issue of specific medication is decided by prior history and exposure. 相似文献
994.
Jensen FE Baram TZ 《Mental retardation and developmental disabilities research reviews》2000,6(4):253-257
The immature brain is highly susceptible to seizures induced by a variety of insults, including hypoxia, fever, and trauma. Unlike early life epilepsy associated with congenital dysplasias or genetic abnormalities, insults induce a hyperexcitable state in a previously normal brain. Here we evaluate the epileptogenic effects of seizure-inducing stimuli on the developing brain, and the age and regional specificity of these effects. 相似文献
995.
996.
It has become a common practice among psychological researchers to administer batteries of individual difference assessments to research participants, although little is known about whether the substantive and psychometric integrity of the questionnaires are maintained when they are administered after the subject has completed other instruments. The studies presented here consider these issues in relation to the assessment of self-esteem and depression. In the first study, college students responded to a self-esteem inventory (a) by itself (control group), (b) after one prior questionnaire, (c) after three prior questionnaires, or (d) after five prior questionnaires. Results indicated that filling out one or more questionnaires before an assessment of self-esteem resulted in reports of lower self-esteem relative to the control condition. Additional analyses revealed that filling out three or five prior questionnaires created lower reliabilities of subscale scores and lower estimates of concurrent validity between self-esteem and depression. When the effect of prior questionnaires on the General Self-Esteem subscale was examined, the aforementioned results were replicated, and the prior questionnaire treatment created heterogeneous variances across the experimental groups. The second study was designed as a replication of the first study, using an assessment of depression as the target questionnaire. These results revealed that reports of depressive symptomatology increased as the number of prior questionnaires increased. Again, the prior questionnaire treatment created heterogeneity of variance between the groups, but did not adversely affect its internal consistency. 相似文献
997.
Z G Sigurdardottir G Green R R Saunders 《Journal of the experimental analysis of behavior》1990,53(1):47-63
In Experiment 1, 3, adult females were taught with verbal instructions and contingencies to select, in sequence, three arbitrary visual stimuli from an array of five stimuli. After four different sequences were taught, match-to-sample tests assessed emergent conditional relations among all stimuli that had been selected in the same order in the sequences. Subjects' performances indicated development of four stimulus classes, three based on ordinal position and one based on nonselection. Next, match-to-sample training established conditional relations between each of four novel figures and one member of each of the ordinal stimulus classes. Tests confirmed that the classes were equivalence classes, each expanded by one new member. In subsequent sequence tests, the new stimuli were selected in a sequence that was consistent with ordinal class membership. Experiment 2 replicated Experiment 1 with 2 different adult females, but the verbal instructions were omitted. Results were similar to Experiment 1, except that extensive review and retesting were required before expansion of the ordinal classes with the novel figures was observed. 相似文献
998.
Auditory psychomotor coordination and visual search performance 总被引:2,自引:0,他引:2
In Experiments 1 and 2, the time to locate and identify a visual target (visual search performance in a two-alternative forced-choice paradigm) was measured as a function of the location of the target relative to the subject's initial line of gaze. In Experiment 1, tests were conducted within a 260 degree region on the horizontal plane at a fixed elevation (eye level). In Experiment 2, the position of the target was varied in both the horizontal (260 degrees) and the vertical (+/- 46 degrees from the initial line of gaze) planes. In both experiments, and for all locations tested, the time required to conduct a visual search was reduced substantially (175-1,200 msec) when a 10-Hz click train was presented from the same location as that occupied by the visual target. Significant differences in latencies were still evident when the visual target was located within 10 degrees of the initial line of gaze (central visual field). In Experiment 3, we examined head and eye movements that occur as subjects attempt to locate a sound source. Concurrent movements of the head and eyes are commonly encountered during auditorily directed search behavior. In over half of the trials, eyelid closures were apparent as the subjects attempted to orient themselves toward the sound source. The results from these experiments support the hypothesis that the auditory spatial channel has a significant role in regulating visual gaze. 相似文献
999.
Five experiments are reported in which subjects judged the movement or spatial location of a visible object that underwent a combination of real and induced (illusory) motion. When subjects attempted to reproduce the distance that the object moved by moving their unseen hands, they were more affected by the illusion than when they pointed to the object's perceived final location. Furthermore, pointing to the final location was more affected by the illusion when the hand movement began from the same position as that at which the object initially appeared, as compared with responses that began from other positions. The results suggest that people may separately encode two distinct types of spatial information: (1) information about the distance moved by an object and (2) information about the absolute spatial location of the object. Information about distance is more susceptible to the influence of an induced motion illusion, and people appear to rely differentially on the different types of spatial information, depending on features of the pointing response. The results have important implications for the mechanisms that underlie spatially oriented behavior in general. 相似文献
1000.
Z Z Cernovsky 《Psychological reports》1990,66(1):337-338
Rushton's (1988) reinterpretation of recent research on brain weight one-sidedly emphasizes the findings of heavier brain weight in whites than in blacks and neglects to comment on a larger difference found between men and women. Rushton explicitly used brain size as indicator of intelligence. His implicit conclusion that women are less intelligent than men is not supported by empirical research. 相似文献