全文获取类型
收费全文 | 42097篇 |
免费 | 1603篇 |
国内免费 | 24篇 |
专业分类
43724篇 |
出版年
2020年 | 435篇 |
2019年 | 431篇 |
2018年 | 716篇 |
2017年 | 692篇 |
2016年 | 721篇 |
2015年 | 465篇 |
2014年 | 638篇 |
2013年 | 3101篇 |
2012年 | 1178篇 |
2011年 | 1282篇 |
2010年 | 734篇 |
2009年 | 784篇 |
2008年 | 1103篇 |
2007年 | 1093篇 |
2006年 | 1016篇 |
2005年 | 896篇 |
2004年 | 866篇 |
2003年 | 821篇 |
2002年 | 829篇 |
2001年 | 1434篇 |
2000年 | 1423篇 |
1999年 | 1075篇 |
1998年 | 476篇 |
1997年 | 411篇 |
1992年 | 881篇 |
1991年 | 786篇 |
1990年 | 866篇 |
1989年 | 772篇 |
1988年 | 733篇 |
1987年 | 714篇 |
1986年 | 751篇 |
1985年 | 822篇 |
1984年 | 627篇 |
1983年 | 557篇 |
1982年 | 434篇 |
1981年 | 385篇 |
1979年 | 672篇 |
1978年 | 509篇 |
1977年 | 435篇 |
1976年 | 410篇 |
1975年 | 613篇 |
1974年 | 692篇 |
1973年 | 674篇 |
1972年 | 570篇 |
1971年 | 512篇 |
1970年 | 443篇 |
1969年 | 526篇 |
1968年 | 619篇 |
1967年 | 546篇 |
1966年 | 566篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
321.
John M. Eiler Walter W. Nelson Craig C. Jensen Steven P. Johnson 《Behavior research methods》1989,21(1):53-58
Using bar code technology to automate data collection provides a rapid and reliable alternative to paper-and-pencil tracking or keyboard entry into pocket or laptop computer. An array of bar code symbols is printed on a data menu, with a unique symbol corresponding to each possible observation. Bar code symbols are scanned using hand-held readers, which record the event, log the observation time, and store data for transfer to a personal computer. Advantages of the bar code monitoring system include: (1) ease of use by staff with minimal technical training, (2) reduced data entry errors and increased entry speed, (3) reliable portable operation, and (4) low-cost hardware. While the bar code system described here is used for behavioral monitoring in a residential treatment setting for the developmentally disabled, with minimal modification this system can be adapted for use in a wide variety of research and clinical applications. 相似文献
322.
DON S. UDELL FRANKIE P. MORTON GARY GREEN 《Journal of Addictions & Offender Counseling》1989,9(2):22-28
In this study, the authors analyzed demographic data on 403 Oklahoma inmates who went through the Regimented Inmate Discipline Program in 1984–1985. Also, a sample of the inmates was interviewed to identify the most supportive components of the program. 相似文献
323.
The purpose of this study was to evaluate the effectiveness of a participative management (self-management) procedure directed toward increasing the frequency of positive interactions between direct-care staff and group home residents. A component of the self-management procedure, goal setting, was also evaluated. This study took place in two group homes housing a total of 16 male and female adults with moderate to mild mental retardation. Ten direct-care staff served as subjects. It was found that self-management produced an increase in the frequency of positive interactions of staff and residents, but did not produce changes in other behaviors being measured (e.g., negative interactions, self-stimulation, etc.). Goal setting did not result in changes in positive interactions or other target behaviors. Reasons for the different results of self-management versus goal-setting are discussed and further research is suggested. 相似文献
324.
Visual information provided by a talker’s mouth movements can influence the perception of certain speech features. Thus, the “McGurk effect” shows that when the syllable /bi/ is presented audibly, in synchrony with the syllable /gi/, as it is presented visually, a person perceives the talker as saying /di/. Moreover, studies have shown that interactions occur between place and voicing features in phonetic perception, when information is presented audibly. In our first experiment, we asked whether feature interactions occur when place information is specified by a combination of auditory and visual information. Members of an auditory continuum ranging from /ibi/ to /ipi/ were paired with a video display of a talker saying /igi/. The auditory tokens were heard as ranging from /ibi/ to /ipi/, but the auditory-visual tokens were perceived as ranging from /idi/ to /iti/. The results demonstrated that the voicing boundary for the auditory-visual tokens was located at a significantly longer VOT value than the voicing boundary for the auditory continuum presented without the visual information. These results demonstrate that place-voice interactions are not limited to situations in which place information is specified audibly. In three follow-up experiments, we show that (1) the voicing boundary is not shifted in the absence of a change in the global percept, even when discrepant auditory-visual information is presented; (2) the number of response alternatives provided for the subjects does not affect the categorization or the VOT boundary of the auditory-visual stimuli; and (3) the original effect of a VOT boundary shift is not replicated when subjects are forced by instruction to \ldrelabel\rd the /b-p/auditory stimuli as/d/or/t/. The subjects successfully relabeled the stimuli, but no shift in the VOT boundary was observed. 相似文献
325.
326.
Dental phobias and anxieties: evidence for conditioning processes in the acquisition and modulation of a learned fear 总被引:1,自引:0,他引:1
G C Davey 《Behaviour research and therapy》1989,27(1):51-58
The present study investigated some of the factors which differentiate individuals with dental anxieties and phobias from those without such fears. In particular, two questions were addressed: (i) What differentiates subjects who have never been anxious about dental treatment from subjects who at some time have been anxious? and (ii) What factors lead to subjects changing their attitudes either from anxious to relaxed or from relaxed to anxious? The results suggest that the factors which influence the acquisition and modulation of dental anxieties are consistent with the associative and representational processes portrayed in contemporary models of human conditioning. Subjects who reported never having had anxieties about dental treatment were less likely to have had a painful dental treatment than subjects who did report an anxiety. Subjects who did report a painful dental experience but did not acquire anxiety reported a history of dental treatment favourable to the operation of latent inhibition. Subjects who reported that they were good at enduring pain were more likely to report a longer interval between their very first dental treatment and their first painful dental treatment. Under some conditions in which latent inhibition should have precluded the acquisition of a dental fear, an anxiety appeared to be acquired because a very painful experience had attenuated the latent inhibition process. Subjects whose dental anxiety did not remit reported significantly more painful and traumatic dental experiences than subjects whose anxiety did remit. 相似文献
327.
One-session treatment for specific phobias 总被引:6,自引:1,他引:5
L G Ost 《Behaviour research and therapy》1989,27(1):1-7
A rapid and effective treatment for specific phobias, in which the treatment is done in one single session, is described in detail. The treatment method consists of a combination of exposure in vivo and modeling. The short- and long-term outcome for a consecutive series of 20 patients are reported. Mean treatment time was 2.1 h and at follow-up after an average of 4 yr 90% were much improved or completely recovered. 相似文献
328.
G Adler 《Journal of the American Psychoanalytic Association》1989,37(3):761-785
The treatment of borderline patients provides a setting in which the analyst can evaluate the clinical usefulness of Kohut's theories. The issues that arise in this treatment can also highlight aspects of Kohut's theories that are incomplete and require other theoretical models in order to understand the patient optimally. 相似文献
329.
In three experiments, the effect of target luminance on estimates of visual persistence was determined on a popular successive-field task. Even though the experiments differed from each other only in terms of minor changes in stimulus conditions, very different effects were obtained across the three experiments. The different findings were attributed to the often overlooked roles of masking and target degradation on tasks of persistence. Implications for the numerous contradictory findings in the persistence literature are discussed, and the current popularity of the successive-field task is questioned. 相似文献
330.
The purpose of this investigation was to determine if there were differences between regular education and emotionally disturbed early adolescents with respect to self-concept, body image, and selected uses of clothing. A questionnaire was administered to 74 regular education students from three middle schools. An additional 27 students labeled emotionally disturbed were surveyed from one of the schools. The questionnaire contained existing measures of self-concept and body cathexis and a revised clothing scale developed by the authors. Analysis of the data using t tests revealed significant differences between the groups with regard to self-concept and body image. In both cases, regular education students perceived themselves more positively than did those labeled emotionally disturbed. Factor analysis of the clothing-use measure gave rise to five distinct factors, one of which revealed a significant difference between the groups when analyzed by t tests. This factor, "dependence," examined the emotional effects of the use of clothing on individuals, such as the ability to influence mood. The emotionally disturbed students were less likely to use clothing to influence mood than were the regular education students. The results of this investigation lend further credence to the importance of self-concept in the education curriculum, and imply that the usual aspects of the curriculum that deal with self-concept may be served better by helping the individual become more realistic and self-accepting. The use of clothing as a tool to enhance self-concept merits further investigation. 相似文献