全文获取类型
收费全文 | 56996篇 |
免费 | 2117篇 |
国内免费 | 27篇 |
专业分类
59140篇 |
出版年
2020年 | 613篇 |
2019年 | 722篇 |
2018年 | 1003篇 |
2017年 | 1117篇 |
2016年 | 1126篇 |
2015年 | 761篇 |
2014年 | 959篇 |
2013年 | 4362篇 |
2012年 | 1791篇 |
2011年 | 1829篇 |
2010年 | 1162篇 |
2009年 | 1102篇 |
2008年 | 1601篇 |
2007年 | 1620篇 |
2006年 | 1445篇 |
2005年 | 1280篇 |
2004年 | 1232篇 |
2003年 | 1165篇 |
2002年 | 1206篇 |
2001年 | 1749篇 |
2000年 | 1731篇 |
1999年 | 1334篇 |
1998年 | 606篇 |
1997年 | 574篇 |
1993年 | 520篇 |
1992年 | 1108篇 |
1991年 | 984篇 |
1990年 | 1065篇 |
1989年 | 964篇 |
1988年 | 972篇 |
1987年 | 929篇 |
1986年 | 949篇 |
1985年 | 916篇 |
1984年 | 796篇 |
1983年 | 738篇 |
1982年 | 563篇 |
1981年 | 523篇 |
1979年 | 894篇 |
1978年 | 641篇 |
1977年 | 573篇 |
1975年 | 745篇 |
1974年 | 821篇 |
1973年 | 850篇 |
1972年 | 676篇 |
1971年 | 637篇 |
1970年 | 570篇 |
1969年 | 680篇 |
1968年 | 785篇 |
1967年 | 709篇 |
1966年 | 648篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Barrie B. Alexander Suzanne B. Johnson Randy L. Carter 《Journal of abnormal child psychology》1984,12(2):199-207
The Family Adaptability and Cohesion Evaluation Scales (FACES), a measure of family functioning, contains three scales: cohesion, adaptability, and social desirability. These were slightly modified (FACES- R) on the basis of pilot data and were administered to 42 clinic families (families seeking or receiving psychological services) and 206 nonclinic families. Support for the scales was found in high coefficient alpha reliabilities and similarity of the sample means and standard deviations to those of the standardization sample. However, there was little agreement among family members' scale scores. Therapists' ratings of cohesion and adaptability did not correlate with scale scores among clinic families. There was no difference between clinic and nonclinic samples on the cohesion or adaptability scales, although the social desirability scale did discriminate between groups. Factor analysis suggested that cohesion, adaptability, and social desirability cannot be clearly differentiated using this measure.This work was supported by the American Association of University Women and by Grant R01HD13820 from the National Institute of Child Health and Human Development. 相似文献
992.
993.
The present research studied self-awareness by utilizing experiential sampling methodology, which allows for the random sampling of individuals' thoughts and feelings as they go about their normal daily activities. Neither Study 1 nor 2 found a relation between private or public self-awareness and negative affect. However, attention to private self-aspects was generally more positive and less ruminative for low as opposed to high private self-conscious subjects, and awareness of oneself as a social object was generally more positive but less important for low as opposed to high public self-conscious subjects. What may have accounted for the negative relation between private self-consciousness and average affect was that low private self-conscious subjects were more likely to attend to their private self-aspects if they were pleasant than if they were unpleasant, while high private self-conscious subjects' degree of private self-awareness was unrelated to whether the content of this state was pleasant or not. These findings are consistent with the hypothesis that low private self-conscious individuals engage in a more selective type of self-attention when in the private self-aware state than do high private self-conscious individuals. Regarding the relation between self-awareness and social context, both studies found that the presence of others results in a heightened public self-awareness. However, even though subjects were more attentive to public self-aspects when with others than when alone, in general, they were more attentive to their “private self” than to their “public self”. Results are discussed in terms of current self-awareness theory. 相似文献
994.
995.
996.
Stimulus selection in passive avoidance learning and retention: weanling, periadolescent, and young adult rats 总被引:1,自引:0,他引:1
Periadolescent rats exhibit a number of behavioral differences in comparison with younger or older animals. For instance, periadolescents tend to show enhanced acquisition of simple active avoidance tasks, but impaired acquisition of more complex appetitive and aversive discriminations. In this experiment, rats were trained on a simple passive avoidance task at one of three ages, as weanlings (25 days), periadolescents (35 days), or young adults (45 days). Training occurred in the presence of both a redundant discriminative stimulus and a specified, redundant contextual stimulus. The periadolescents did not differ from either younger or older rats in rate of learning the passive avoidance task. The retention performance of these animals was then tested following a change in either, neither, or both of the redundant cues. When a measure of performance that controls for baseline activity was used, it was observed that periadolescents were not disrupted by a change in the redundant discriminative stimulus, a cue change that clearly disrupted performance in 25- and 45-day-old animals, and tended to be more disrupted by the contextual change than younger or older rats. It is hypothesized that the alterations in performance exhibited by periadolescents may be related to an ontogenetic alteration in stimulus selection modulated by the catecholaminergic systems. 相似文献
997.
998.
Patrick C. L. Heaven 《Personality and individual differences》1984,5(6):741-742
Previous research among university students has identified four classes of assertive behavior, namely, Directiveness, Social Assertiveness, Defense of One's Rights and Interests and Independence. Scores on the Lorr and More (1980) Assertiveness Inventory, obtained from a general population sample, were subjected to Varimax rotatio. Results revealed only three classes of assertiveness. It is argued that Directiveness may be inferred from various forms of assertiveness, rather than being a separate and distinct class of assertive behavior. 相似文献
999.
Sybil B.G. Eysenck G. Easting P.R. Pearson 《Personality and individual differences》1984,5(3):315-321
A total of 1505 children (633 boys and 872 girls) completed the I6 Impulsiveness Questionnaire. Reliabilities, scale intercorrelations and means and standard deviations are given after slight modifications were made to the original scoring key on the basis of factor analyses. Age means for both sexes are also given. 相似文献
1000.
This experiment examined whether structural considerations, that is the functional closeness of limb control centres (Kinsbourne and Hicks 1978), have a role to play in common processing models of psychological refractoriness. A typical double stimulation paradigm was used (Kantowitz 1974). On experimental trials, subjects responded with the right hand (RT1) to an auditory signal (0.80 probability). After a varied interstimulus interval (ISI) of 100, 200, 300 or 700 msec, one of three lights corresponding to one of the other limbs provided the signal for the second response (RT2). Control trials for RT1 and RT2 involved both stimuli, but subjects were required to make only one response. Results indicated that experimental RT1 was lengthened considerably over control values. While typical double stimulation effects were found at short ISIs, that is RT2 was lengthened, RT2 at long ISIs was actually faster than double stimulation control values. Although the RT results were not in a pattern that would be predicted by functional distance (Kinsbourne and Hicks 1978), within subject correlations of RT1 and RT2 by limb condition suggest that structural considerations may have a role to play. While within subject correlations were positive at all levels of ISI, they decreased as the interval between the two signals increased. The implications of these results for common processing models are discussed. 相似文献