全文获取类型
收费全文 | 71445篇 |
免费 | 1337篇 |
国内免费 | 7篇 |
专业分类
72789篇 |
出版年
2020年 | 716篇 |
2019年 | 761篇 |
2018年 | 1075篇 |
2017年 | 1161篇 |
2016年 | 1284篇 |
2015年 | 930篇 |
2014年 | 1107篇 |
2013年 | 5441篇 |
2012年 | 1974篇 |
2011年 | 2069篇 |
2010年 | 1321篇 |
2009年 | 1273篇 |
2008年 | 1802篇 |
2007年 | 1773篇 |
2006年 | 1563篇 |
2005年 | 1495篇 |
2004年 | 1407篇 |
2003年 | 1352篇 |
2002年 | 1450篇 |
2001年 | 2040篇 |
2000年 | 1911篇 |
1999年 | 1494篇 |
1998年 | 749篇 |
1997年 | 681篇 |
1992年 | 1292篇 |
1991年 | 1249篇 |
1990年 | 1247篇 |
1989年 | 1186篇 |
1988年 | 1149篇 |
1987年 | 1099篇 |
1986年 | 1152篇 |
1985年 | 1250篇 |
1984年 | 1004篇 |
1983年 | 917篇 |
1982年 | 708篇 |
1981年 | 760篇 |
1979年 | 1102篇 |
1978年 | 836篇 |
1977年 | 753篇 |
1976年 | 696篇 |
1975年 | 990篇 |
1974年 | 1144篇 |
1973年 | 1134篇 |
1972年 | 957篇 |
1971年 | 897篇 |
1970年 | 842篇 |
1969年 | 902篇 |
1968年 | 1096篇 |
1967年 | 1011篇 |
1966年 | 980篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
261.
An experiment with 42 human Ss used the transswitching procedure to examine tonic stimulus control of phasic and tonic conditioned vasomotor heart rate, and electrodermal reactions. The conditional stimulus (CSs) were photos of angry and friendly human faces, and the unconditional stimulus (US) was a human scream. In one tonic context (blue light), the CSs were paired with the US, in the other context (yellow light), the CSs were presented unpaired. Following acquisition, an extinction series was run with the US omitted during both tonic contexts. Phasic vasomotor and skin conductance reactions differed in the positive and negative tonic segments (stronger in positive). The skin conductance responses also differed during extinction, but the vasomotor responses did not. Tonic differences (following onset of the tonic stimuli) in unelicited skin conductance response frequency, finger pulse volume, and heart rate were also found, although these developed more slowly than the phasic differences. The finger pulse volume tonic difference was greater in extinction than the skin conductance response frequency. There was no effect of the angry-friendly facial expressions, either directly or in interaction with the transswitching effects. The results were interpreted to mean that the transswitching phenomenon is not limited to one another autonomic effector, but is more generalized across the ANS (sympathetic branch). The absence of influence of the facial expressions indicates the relative weakness of the “preparedness” hypothesis in comparison with more influential contextual factors. 相似文献
262.
Paul C. Quinn B. R. Wooten Evette J. Ludman 《Attention, perception & psychophysics》1985,37(3):198-204
Sternheim and Boynton’s (1966) continuous judgmental color-naming technique was used to assess the elemental nature of achromatic colors. Results from three subjects indicate that the names “black” and “white” are necessary and sufficient to describe achromatic test lights associated with the name “gray.” On the basis of the criteria that establishes a color as elemental, black and white were confirmed as elemental, whereas gray was not. These findings support the assumption of various opponent processing models that there are only two elemental achromatic sensations. In addition, the results support Hering’s (1920) view that black and white differ from the paired-chromatic opponent colors in that they are not mutually exclusive. 相似文献
263.
264.
H K Gediman 《Journal of the American Psychoanalytic Association》1985,33(4):911-935
This paper deals with imposturous tendencies as ubiquitous and heterogeneous. They may enter into neurotic conflict and compromise, and also reflect an ego function disturbance involving multiple, shifting identities and subsequent problems in the subjective sense of reality of the self and objects. Imposture in a person undergoing analysis is, however, not only a function of individual character and psychopathology; it is also a function of certain inevitable requirements of the analytic situation which constitute a "pull" for its emergence. Vulnerable individuals will respond to this pull in revealing ways. Three case summaries illustrate the spectrum of imposturous tendencies. 相似文献
265.
266.
This study concerns the manner in which the traumatic events suffered by the parent in the Nazi holocaust are communicated to the second generation born after the Second World War. Additionally we investigated the effects of differences in wartime experiences on subsequent communication behaviors. Communication behaviors in families whose parents had been prisoners in concentration camps were compared with those of families who had displayed active resistance (i.e., were partisans) during the Second World War. The data indicate greater legitimacy and openness in discussing holocaust-related issues in the homes of ex-partisans than in the homes of ex-prisoners in concentration camps. Also, sons and daughters of the former group have better knowledge of the holocaust and hold more favorable attitudes than do sons and daughters in the second group. The implications of these findings are discussed. 相似文献
267.
H L Piersma 《Adolescence》1985,20(80):975-979
Some of the common conflicts that occur between therapists and direct-care staff in residential, adolescent treatment facilities are highlighted. These conflicts often parallel those occurring between an adolescent's parents. Common issues include the amount of time spent with the adolescent patient, questions of authority, and communication difficulties. These conflicts can have positive consequences, if each party recognizes that the other brings a needed perspective to adolescent treatment. 相似文献
268.
269.
270.
Memory deficits and memory surfeits: differential cognitive consequences of tokenism for tokens and observers 总被引:1,自引:0,他引:1
Historically, women and minority group members have been underrepresented in the professions and in better paying, high-status jobs. Even when they have been admitted to such positions, these underrepresented persons often have been the only member of their social category: a token. Previous field and laboratory research has shown that "tokens" attract disproportionate attention and are either evaluated unfairly or evaluated on the basis of their normal reactions to differential treatment by majority group members. We tested the possibilities of whether tokens might suffer more cognitive deficits than would nontokens, and whether they do so even when they are treated no differently. College students were led to believe that they were sharing their views on everyday topics with three other students (actually videotaped confederates), who were either all of the student's own sex or all of the opposite sex. In a later memory test, token participants remembered fewer of the opinions that they and the three other students had expressed than did nontokens. Observers, in contrast, remembered more of what token subjects said than what the three other students said. Theoretical and public policy implications are discussed. 相似文献