全文获取类型
收费全文 | 50742篇 |
免费 | 2011篇 |
国内免费 | 25篇 |
专业分类
52778篇 |
出版年
2020年 | 514篇 |
2019年 | 585篇 |
2018年 | 870篇 |
2017年 | 825篇 |
2016年 | 898篇 |
2015年 | 665篇 |
2014年 | 781篇 |
2013年 | 4584篇 |
2012年 | 1378篇 |
2011年 | 1473篇 |
2010年 | 910篇 |
2009年 | 867篇 |
2008年 | 1276篇 |
2007年 | 1165篇 |
2006年 | 1064篇 |
2005年 | 896篇 |
2004年 | 882篇 |
2003年 | 891篇 |
2002年 | 866篇 |
2001年 | 1730篇 |
2000年 | 1661篇 |
1999年 | 1233篇 |
1998年 | 532篇 |
1996年 | 608篇 |
1995年 | 581篇 |
1994年 | 555篇 |
1993年 | 547篇 |
1992年 | 1188篇 |
1991年 | 1060篇 |
1990年 | 1091篇 |
1989年 | 984篇 |
1988年 | 963篇 |
1987年 | 929篇 |
1986年 | 938篇 |
1985年 | 921篇 |
1984年 | 806篇 |
1983年 | 668篇 |
1981年 | 522篇 |
1979年 | 722篇 |
1978年 | 565篇 |
1975年 | 683篇 |
1974年 | 726篇 |
1973年 | 743篇 |
1972年 | 726篇 |
1971年 | 635篇 |
1970年 | 569篇 |
1969年 | 594篇 |
1968年 | 704篇 |
1967年 | 596篇 |
1966年 | 586篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
931.
Vicky V. Wolfe John D. Cone David A. Wolfe 《Journal of psychopathology and behavioral assessment》1986,8(3):211-226
The need to train accurate, not necessarily agreeing, observers is discussed. Intraobserver consistency as an intermediate criterion in such training is proposed and contrasted with the more familiar criterion of interobserver agreement. Videotaped observations of social interactions between handicapped and nonhandicapped preschoolers provided the medium for examining the criterion agreement of four observers trained against each type of standard. Observers generally failed to show high levels of criterion agreement whether trained to a within- or to a between-observer agreement standard. The results varied somewhat with the frequency of behaviors, however. Correlations between interobserver agreement and intraobserver consistency were variable but somewhat higher when interobserver agreement was the training criterion than when intraobserver consistency was the criterion. Correlations between interobserver agreement and criterion agreement ranged from — .16 to .89 during interobserver agreement training. Correlations between intraobserver consistency and criterion agreement ranged from — .23 to .99 during intraobserver consistency training. 相似文献
932.
J K O'Hanlon B D Sachs 《Journal of comparative psychology (Washington, D.C. : 1983)》1986,100(2):178-187
Three experiments with rats (Rattus norvegicus) were conducted to examine the roles of the male's penile spines and penile cups (flaring of the distal glans) in the induction of luteal activity in the female, and in the removal of copulatory plugs from the vaginal tract. The results of Experiment 1 revealed no role for the cup in luteal induction but did suggest that elements of the ejaculatory reflex apart from cup formation contribute to the elicitation of this neuroendocrine response. The origin of this stimulatory effect was not directly determined, but indirect evidence suggested a role for penile spines. In Experiments 2 and 3, features of the glans penis that might help effect plug removal were investigated, and the experiments demonstrated that penile spines, perhaps in conjunction with penile cups, contribute to the extraction of plugs from the vagina. 相似文献
933.
934.
D M Fragaszy 《Journal of comparative psychology (Washington, D.C. : 1983)》1986,100(4):392-400
Squirrel monkeys (Saimiri sciureus) and titi monkeys (Callicebus moloch) were studied in tasks involving reaching for food in near space (arm's reach). Although performance by monkeys of the two species differed in several ways familiar from previous studies, the species did not differ in the tendency to adopt a habitual position or limb during reaching. The findings contrast with previous work on spatial preferences in these species in tasks involving movement of the whole body. Together with the results of previous studies on movement patterns in these two species, the findings are placed in a comparative psychological framework of the proximate sources of use of space in nature. 相似文献
935.
John E. Douglas Robert K. Ressler Ann W. Burgess Carol R. Hartman 《Behavioral sciences & the law》1986,4(4):401-421
Since the 1970s, investigative profilers at the FBI's Behavioral Science Unit (now part of the National Center for the Analysis of Violent Crime) have been assisting local, state, and federal agencies in narrowing investigations by providing criminal personality profiles. An attempt is now being made to describe this criminal-profile-generating process. A series of five overlapping stages lead to the sixth stage, or the goal of apprehension of the offender: (1) profiling inputs, (2) decision-process models, (3) crime assessment, (4) the criminal profile, (5) investigation, and (6) apprehension. Two key feedback filters in the process are: (a) achieving congruence with the evidence, with decision models, and with investigation recommendations, and (b) the addition of new evidence. 相似文献
936.
937.
This paper reviews the literature on scapegoating, elaborating on the underlying mechanisms before describing the process of scapegoating as it occurred in a neonatal nurse support group. Illustrative vignettes are used to discuss how scapegoating was used by group members to avoid painful feelings arising from their care of extremely ill infants. Group process is related to the stages of the group's development as feelings were addressed more directly and the need to use scapegoating as a defense decreased. 相似文献
938.
John R. Hurley Ph.D. 《Group》1986,10(3):161-176
Early and late in 18 2-day solo-led psychodynamic groups for mental health professionals, 185 participants rated their own behavior and each other's on composite measures of Acceptance versus Rejection of Self (ARS) and of Others (ARO). Only on ARO were leaders consistently rated more favorably than members. Considered by group units, members' mean ratings of peers made modest but significant early-to-late advances on both measures. About two-thirds of all intergroup differences in members' net shifts were separately predictable from ratings of leaders by self and also by pooled group members each time. Groups' ARO shifts were best predicted by members' ratings of leaders toward Warm versus Cold. Leader self-ratings toward Accepts others versus Rejects others best predicted groups' ARS shifts. Featuring interpersonal behavior's two principal dimensions and bridging the common split between studies of group outcome versus group processes, these findings generally support Roger's (1959) theory of personality change. 相似文献
939.
Human relations training includes counselling as an important ingredient. This case-study reports the learning of one primary deputy headteacher during a six-day course, and her continuing efforts to use and extend that learning during the following year. She reported an improvement in classroom discipline, and less stressful and more effective relationships with colleagues and pupils, linking these gains with insights and skills developed on the course. The value to course designers of goal-setting structures is illustrated by the study. Such structures provide an opportunity to take part in, and study, counselling interventions which have real problems as their focus. 相似文献
940.
The role of spatial-frequency channels in the perception of local and global structure 总被引:5,自引:0,他引:5
Adaptation and reaction-time techniques were used to examine the role of different spatial-frequency channels in the perception of local and global structure. Subjects were shown figures consisting of a large C composed of smaller Cs and asked to identify the orientation of either the global C or its local elements. Prior to performing the task subjects were adapted to different spatial frequencies and the effect on subsequent performance was assessed. Two main results were found. First, the adapting frequency that most affected the global task was often lower than that most affecting the local task, suggesting that high and low frequencies independently code the structure of an image. Second, reaction time to global figures was often faster than to local figures at all levels of detectability, again suggesting a role of low-frequency channels in global processing. 相似文献