全文获取类型
收费全文 | 16718篇 |
免费 | 737篇 |
国内免费 | 16篇 |
专业分类
17471篇 |
出版年
2021年 | 137篇 |
2020年 | 256篇 |
2019年 | 311篇 |
2018年 | 445篇 |
2017年 | 422篇 |
2016年 | 466篇 |
2015年 | 310篇 |
2014年 | 400篇 |
2013年 | 1829篇 |
2012年 | 727篇 |
2011年 | 786篇 |
2010年 | 468篇 |
2009年 | 512篇 |
2008年 | 686篇 |
2007年 | 675篇 |
2006年 | 661篇 |
2005年 | 617篇 |
2004年 | 571篇 |
2003年 | 593篇 |
2002年 | 557篇 |
2001年 | 313篇 |
2000年 | 284篇 |
1999年 | 261篇 |
1998年 | 250篇 |
1997年 | 242篇 |
1996年 | 226篇 |
1995年 | 196篇 |
1994年 | 190篇 |
1993年 | 187篇 |
1992年 | 180篇 |
1991年 | 208篇 |
1990年 | 172篇 |
1989年 | 155篇 |
1988年 | 125篇 |
1987年 | 148篇 |
1986年 | 160篇 |
1985年 | 196篇 |
1984年 | 184篇 |
1983年 | 169篇 |
1982年 | 172篇 |
1981年 | 185篇 |
1980年 | 137篇 |
1979年 | 143篇 |
1978年 | 153篇 |
1977年 | 136篇 |
1976年 | 138篇 |
1975年 | 123篇 |
1974年 | 134篇 |
1973年 | 115篇 |
1972年 | 82篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
David Belgum Ph.D. 《Journal of religion and health》1992,31(1):73-85
Our discussion begins with a consideration of the various types of religion and of guilt. Both religion and morality function in different ways from individual to individual. All these factors need to be taken into account before we can turn to treatment for the painful experience of guilt and bring about an improved self-esteem. 相似文献
42.
The validity of the Threat Index was examined in a study of 42 students and 15 HIV+ clients. When completing the Threat Index, subjects rate the self and death on 30 bipolar adjectives. A count is made of the number of times the same adjective poles are used to describe the self and death. Uses of the same poles are called matches, while uses of different poles are called splits. The Threat Index is based on the assumption that splits indicate threat. Analysis showed that neither splits nor matches were usually threatening and that neither was necessary or sufficient for the experience of threat. These results did not support the validity of the Threat Index. 相似文献
43.
N E Adler H P David B N Major S H Roth N F Russo G E Wyatt 《The American psychologist》1992,47(10):1194-1204
Psychological research is increasingly involved in debates regarding abortion. While recognizing the diversity of ethical and moral issues intertwined with abortion, the American Psychological Association (APA) has focused its involvement on psychological factors, most recently by appointing an expert panel to review the literature on psychological effects. This article notes the history of APA involvement and reports on the panel's conclusions. It presents evidence that abortion is not likely to be followed by severe psychological responses and that psychological aspects can best be understood within a framework of normal stress and coping rather than a model of psychopathology. Correlates of more negative responses following abortion are also discussed. 相似文献
44.
Recently, the attitudes held by Australians towards tobacco company advertising and sponsorship have become the focus of much public discussion and the concern of psychological researchers and opinion pollsters. Community attitude surveys have been commissioned by both supporters and opponents of the tobacco industry. Paradoxically, the data obtained from these surveys allow each protagonist to state that the majority of Australians agree with their viewpoint The present authors have identified several sources of possible bias in two surveys as causes of contradictory research findings. A questionnaire was designed which attempted to reduce the sources of bias and which incorporated other methodological refinements. The data obtained highlight how the form of the questions may substantially influence responses in attitude surveys. 相似文献
45.
46.
47.
Vincent Winterling David L. Gast Mark Wolery Jacqueline A. Farmer 《Journal of applied behavior analysis》1992,25(1):217-227
Teaching students with disabilities to respond appropriately to potentially dangerous situations is a useful skill that has received little research attention. This investigation taught 3 students with moderate mental retardation to remove and discard broken materials (plates, glasses) safely from (a) a sink containing dishwater, (b) a countertop, and (c) a floor. A 4th student was instructed on the sink task only. A multicomponent treatment package was used to teach the skills. Simulated materials were used initially and were replaced with broken plates and glasses. A multiple probe design was used to evaluate the effectiveness of the treatment package. The results indicated that the treatment package was effective in teaching the skills. Data were collected 1 week and 1 month following the completion of training, and indicated mixed results. No student was injured during any phase of training. Issues pertinent to teaching safety skills to students with moderate disabilities are discussed. 相似文献
48.
J Miller A Riehle J Requin 《Journal of experimental psychology. Human perception and performance》1992,18(4):1121-1138
Observations of single neurons in the primary motor cortex of 1 monkey provided evidence that preliminary perceptual information reaches the motor system before perceptual analysis is complete. Neurons were recorded during a task in which 1 stimulus was assigned to a wrist flexion response and another was assigned to wrist extension. Two stimuli were assigned to a no-go response; each was visually similar to either the flexion or the extension stimulus. When a no-go stimulus was presented, neurons responded with weaker versions of the discharge patterns exhibited to the visually similar stimulus requiring a movement, suggesting that neurons receive partial perceptual information favoring that movement. Functionally separable neuronal populations were identified, and differences in the activations of these provide evidence about the functional effects of preliminary perceptual output on movement control processes. 相似文献
49.
James R. Stagray David Downs Ronald K. Sommers 《Journal of psycholinguistic research》1992,21(6):511-524
We measured subjective-tone identification thresholds evoked by acoustically filtered complex tones and compared them to Mandarin-Chinese tone-phoneme identification thresholds previously measured under the same filtering conditions. Tone phonemes were identified at intensities below subjective-tone identification thresholds, suggesting subjective tone is not necessary for tone-phoneme identification. Lower subjective-tone thresholds evoked by resolved harmonics rather than unresolved harmonics were consistent with pattern recognition theories of pitch perception.The authors thank Donald Gans and Richard Klich for all their help. 相似文献
50.
David A. Julian Teresa W. Julian Barry J. Mastrine Pauline Wessa Elizabeth Atkinson 《American journal of community psychology》1992,20(6):799-809
Analyzed case records to determine the costs and service usage patterns for a group of 25 youth randomly selected from the case load of a regional mental health agency. Study participants had extensive histories of publicly supported psychiatric hospitalizations. An average of 36.2 contacts per youth (905 total contacts) with human services providers were documented. Approximately 2 out of every 5 contacts resulted in out-of-home placements. The estimated cost of providing services to the 25 youth exceeded 3 million dollars. The types and costs of treatment services provided to study participants are discussed. 相似文献