全文获取类型
收费全文 | 59285篇 |
免费 | 875篇 |
国内免费 | 5篇 |
专业分类
60165篇 |
出版年
2020年 | 371篇 |
2019年 | 419篇 |
2018年 | 3898篇 |
2017年 | 3234篇 |
2016年 | 2782篇 |
2015年 | 684篇 |
2014年 | 640篇 |
2013年 | 2683篇 |
2012年 | 1638篇 |
2011年 | 3332篇 |
2010年 | 3073篇 |
2009年 | 2031篇 |
2008年 | 2559篇 |
2007年 | 3007篇 |
2006年 | 840篇 |
2005年 | 988篇 |
2004年 | 893篇 |
2003年 | 785篇 |
2002年 | 750篇 |
2001年 | 1297篇 |
2000年 | 1274篇 |
1999年 | 905篇 |
1998年 | 417篇 |
1997年 | 357篇 |
1992年 | 864篇 |
1991年 | 809篇 |
1990年 | 831篇 |
1989年 | 719篇 |
1988年 | 711篇 |
1987年 | 686篇 |
1986年 | 715篇 |
1985年 | 791篇 |
1984年 | 595篇 |
1983年 | 552篇 |
1982年 | 369篇 |
1981年 | 366篇 |
1979年 | 694篇 |
1978年 | 427篇 |
1977年 | 421篇 |
1976年 | 420篇 |
1975年 | 589篇 |
1974年 | 675篇 |
1973年 | 717篇 |
1972年 | 622篇 |
1971年 | 583篇 |
1970年 | 577篇 |
1969年 | 565篇 |
1968年 | 756篇 |
1967年 | 666篇 |
1966年 | 596篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
951.
Self-selected paraprofessional trainees enrolled in a helping skills training program participated in a 6-minute pretraining helping interview from which their frequency of continuing responses was obtained. Continuing responses allow helpees to present their concerns in a nonthreatening, supportive environment and are important in the relationship establishing stage of the helping process. For data analysis purposes only, trainees were divided into three groups, a high, medium, and low group, based on the frequency of continuing responses made. Following training, at posttest, no significant differences were found among the three groups on the amount of continuing responses made during a second identical 6-minute interview. Implications for various selection procedures and training are discussed. 相似文献
952.
H Goodglass S E Blumstein J B Gleason M R Hyde E Green S Statlender 《Brain and language》1979,7(2):201-209
This study compared two levels of syntactic encoding with respect to their effect on aphasics' auditory comprehension. The same informational content was presented either as an embedded sentence or as two contiguous simplé propositions. A similar contrast was utilized to compare sentences containing relational terms of time, comparison, instrumentality, as well as sentences involving conjunction reduction, with parallel messages expressed in expanded, simplified form. A picture-verification paradigm was used. Comprehension was significantly enhanced only in the case of embedded sentences, with a tendency for Broca's aphasics to show the maximum effects. 相似文献
953.
R W Proctor J D Proctor 《Journal of experimental psychology. Human perception and performance》1979,5(4):610-624
Previous studies have obtained conflicting evidence regarding the effect of probe modality when a secondary probe task is used to measure attentional demands of a primary letter-matching task. The present experiments found no difference in the shape of the probe reaction time functions for auditory and visual probes as long as probe modality was known. When probes "unexpectedly" occurred in the modality that was different from the majority of the probes, differences were obtained. Only the unexpected auditory function changed, shape relative to the others, with reaction time to probes that occurred early in the matching task sequence being increased. The results are interpreted as supporting a role of attentional capacity in the activation of structures that accept relevant sensory input. 相似文献
954.
Three experiments investigated the integrality of height and width of rectangles and the ability of observers to selectively attend to only one dimension. In Experiment 1, redundancy gain and orthogonal interference were demonstrated in a same/different task. Orthogonal interference was due to the output of the "irrelevant" analyzer interfering with the output of the "relevant" analyzer. These results indicated that height and width are integral, but they can be most parsimoniously explained by assuming that rectangles are initially processed by separate dimensional analyzers. Experiment I demonstrated that with sufficient practice (160 trials), observers are able to selectively attend to the more frequently relevant dimension. Performance for the stressed dimension increased, whereas performance for the unstressed dimension declined. Experiment 3 also demonstrated that with sufficient practice (192 trials), observers are able to selectively attend to the relevant dimension and ignore the irrelevant dimension. Orthogonal interference disappeared. The results are discussed in terms of the ability of observers to modify the perceptual process. 相似文献
955.
Summary In an attempt to discover patterns of adult figurative language use, preference and comprehension, 30 Ss were asked to complete 4 different tasks: a composition, a test of simile preference, a test of simile production, and a test of metaphoric comprehension. Each test provided scores for both novel and clichéed usage. The composition task was also scored for total words while preference and production tasks were scored for literal usage, thus producing a total of 11 dependent variables across the complete set of tasks.Results revealed that Ss selected a higher number of novel figures under choice relative to production conditions. Correlational results revealed relationships across all 4 tasks for the categories of novel and frozen usage although certain tasks (i.e., simile preference and production) were more sensitive to novel diction while others (comprehension) were more sensitive to frozen diction. Within-task correlations, on the other hand, showed unique patterns for each of the tasks. Factor analyses of these correlations were found to produce a series of consistent three-factor solutions with the first of these factors concerned primarily with novel diction, the second with both novel and frozen comprehension, and the third primarily with frozen diction.Taken in combination, present results were interpreted to mean that while the distinction between novel and frozen is a meaningful one, specific task requirements can and do moderate the pattern of relationships obtained. This suggests that figurative language competence may not be a unitary process but one that is strongly affected by specific task and situational constraints and that future work, both methodological and theoretical, must take these factors into account. 相似文献
956.
William F. Muhs Gary E. Popp Herman F. Patterson 《Journal of counseling and development : JCD》1979,58(1):20-24
From a review of literature and an examination of data from the Counseling Services at the University of Texas - El Paso, the authors conclude that Mexican-American students place more emphasis on cooperation and group achievement than on individual achievement, and that the education of Mexican Americans may be enhanced when teachers properly reinforce “successful behavior.” In addition, it seems that problems may arise in using U.S.-based theories of “democratic” leadership styles because the Mexican-American culture places more emphasis on traditional leadership roles. 相似文献
957.
The KIM-1 microprocessor combined with a plug-board interface provides an inexpensive and highly flexible system for controlling classical conditioning of the rabbit’s nictitating membrane response. The system is described in the context of a program for differential conditioning. 相似文献
958.
A microprocessor system can be used both to control aversive conditioning (classical, signaled and Sidman avoidance, and conflict) experiments and to acquire behavioral data in multiple subjects at a fraction of the cost of solid state systems. The software described in this paper can be used to program tones and shocks and count responses, independently, in up to 12 animals simultaneously. 相似文献
959.
A preparation for the experimental analysis of cigarette smoking is described in detail. The preparation permits the intensive study of cigarette smoking in individual subjects under controlled laboratory conditions. A variety of behavioral and physiological measures used include rate and pattern of puffing, duration of each puff, time spent smoking cigarettes, expired air carbon monoxide levels, cigarette butt weights, and subjective rating scales of various aspects of smoking. The preparation is reliable and permits relatively unobtrusive monitoring of smoking performance. Cigarette smoking occurs in orderly patterns, within subjects; it varies as a function of number of cigarettes provided and hours of smoking deprivation. 相似文献
960.