全文获取类型
收费全文 | 3368篇 |
免费 | 233篇 |
国内免费 | 10篇 |
专业分类
3611篇 |
出版年
2023年 | 55篇 |
2022年 | 35篇 |
2021年 | 40篇 |
2020年 | 120篇 |
2019年 | 95篇 |
2018年 | 119篇 |
2017年 | 137篇 |
2016年 | 154篇 |
2015年 | 82篇 |
2014年 | 123篇 |
2013年 | 407篇 |
2012年 | 158篇 |
2011年 | 175篇 |
2010年 | 125篇 |
2009年 | 126篇 |
2008年 | 133篇 |
2007年 | 140篇 |
2006年 | 125篇 |
2005年 | 102篇 |
2004年 | 92篇 |
2003年 | 86篇 |
2002年 | 92篇 |
2001年 | 65篇 |
2000年 | 43篇 |
1999年 | 38篇 |
1998年 | 30篇 |
1997年 | 29篇 |
1996年 | 32篇 |
1995年 | 38篇 |
1994年 | 43篇 |
1993年 | 26篇 |
1992年 | 38篇 |
1991年 | 32篇 |
1990年 | 30篇 |
1989年 | 29篇 |
1988年 | 32篇 |
1987年 | 26篇 |
1986年 | 30篇 |
1985年 | 27篇 |
1984年 | 21篇 |
1983年 | 18篇 |
1982年 | 19篇 |
1981年 | 13篇 |
1980年 | 14篇 |
1979年 | 23篇 |
1978年 | 34篇 |
1977年 | 26篇 |
1975年 | 13篇 |
1974年 | 18篇 |
1973年 | 15篇 |
排序方式: 共有3611条查询结果,搜索用时 0 毫秒
61.
Myths and stereotypes about sexual assault reflect a society which excuses perpetrators of assault and blames victims for failing to control men's sexuality. Such views are well-established by early adulthood, but there is little research with adolescents. This study surveyed two hundred forty-four 14–16 year old Australian high school students (105 male, 139 female), of Anglo-European descent. Males were significantly more likely to endorse sexual assault myths, to agree that forced sex was acceptable in some situations, and to hold false stereotypes about sexual assault. Males also held more restrictive attitudes toward women's roles and endorsed a greater level of sexism in dating relationships. This suggests that male and female adolescents have differing expectations of dating relationships, which may underlie sexual assault within relationships. Assault-supportive attitudes are apparent at a young age, supporting the need for educational and social interventions targeting young people. 相似文献
62.
Increases in the oscillation frequency of bimanual movements produce a switch from an anti-phase (180° relative phase) to an in-phase (0° relative phase) coordination pattern. This finding is observed when subjects are instructed not to intervene when they feel themselves slipping out of the anti-phase pattern. The question addressed in this study concerned how performance would be affected if subjects were instructed to try to maintain the pattern at all times. This issue was addressed using two separate groups of subjects: one group was given the do not intervene instructions, the other group was told to try to stay with the pattern at all times. Forearm rotations were tested in 15 s trials, paced by an auditory metronome set at 1.0, 1.5, 2.0, 2.5, and 3.0 Hz. Frequency distributions of the point estimates of relative phase were analyzed. The Do not Intervene group replicated previous findings, as indicated by the development of a bimodal histogram of relative phase distributions with increases in oscillation frequency. However, a very different pattern of findings emerged with increases in oscillation frequency for the group told to stay with the anti-phase pattern. Rather than a bimodal distribution being developed, the data maintained 180° as its central tendency — no secondary distribution developed around 0° relative phase. These data suggest that volitional control can over-ride the inherent dynamical tendencies of the motor system. 相似文献
63.
James S. Howard MD 《Integrative psychological & behavioral science》1996,31(2):148-154
In this article a brief overview of the treatment of chronic psychosis for the last two centuries is covered, with particular emphasis on many scientifically demonstrated causes of chronic organic psychosis and their medically successful treatment, including recent neurotransmitter manipulations. With respect for the important contributions of Bleuler, the term “schizophrenic” is considered as an unscientific and unprovable nosological construct, which has hampered the successful resolution of chronic psychosis and has outlived its usefulness in the lexicon of modern psychiatry. 相似文献
64.
Hoi K. Suen Patrick S. C. Lee Jane E. Prochnow-LaGrow 《Journal of psychopathology and behavioral assessment》1985,7(3):277-287
The meaning and properties of a commonly used index of reliability, S/L,were examined critically. It was found that the index does not reflect any conventional concept of reliability. When used for an identical behavioral observation session, it is not statistically correlated with other reliability indices. Within an observation session, the standardizing measure of Lis beyond the control of the investigator. Furthermore, the reason for the choice of Las the standard is unclear. The role of chance agreement in S/Lis not known. The exact interpretation of the index depends on which observer reports L.Overall the conceptual and mathematical meaning of S/Lis dubious. It is suggested that the S/Lindex should not be used until its nature is shown to be a measure of reliability. Other approaches such as the intraclass correlations and generalizability coefficients should be used instead.The authors are indebted to Johnny Matson for his critique of an earlier version of this paper. 相似文献
65.
Lee Huntington Philip Sanford Zeskind Julie R. Weiseman 《Infant behavior & development》1985,8(3):301-308
Spontaneous startles have been reported to occur most frequently in quiet sleep, less frequently in active sleep and drowse, and relatively nonexistent in the waking states. These findings may be a result of a focus on infants whose prenatal histories reflect a restricted range of the conditions to which normal newborns are exposed. The present study examined the spontaneous startle behavior of 30 newborn infants characterized by high numbers of obstetric complications and by indicators of prenatal malnutrition, but within the range of normal, healthy newborns. In this sample, startles were not limited to the sleep and drowse states. Because individual differences in a number of neonatal behaviors have been related to autonomic nervous system (ANS) functioning, the different pattern of spontaneous startles observed in this sample may be related to the functional integrity of this system. 相似文献
66.
67.
Two experiments were conducted to examine whether the word-frequency effect in recognition memory is primarily a modality-dependent phenomenon. In the first experiment, the presentation modality of a target word was varied orthogonally during the input of the test phases. In the second, the subjects were forced to process each input word at the letter-byo letter level, thus minimizing the orthographical differences between the high- and low-frequency words. The word-frequency effect was found in every experimental condition and should be considered a modality-independent phenomenon. A semantically based interpretation of this effect was proposed. 相似文献
68.
The differential calculus for scalars is used to develop theorems for a calculus of functions of matrices. No appeal to scalar notation is necessary in the resulting calculus, so that the given chain and matrix product rules have wide applicability to matrix theory and models. The chain and product rules of scalar calculus become a special case of the matrix rules. The methods are illustrated by application to a generalized stochastic process model potentially relevant to long- and short-term memory. 相似文献
69.
70.