全文获取类型
收费全文 | 443篇 |
免费 | 31篇 |
国内免费 | 1篇 |
专业分类
475篇 |
出版年
2024年 | 4篇 |
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 14篇 |
2019年 | 10篇 |
2018年 | 9篇 |
2017年 | 13篇 |
2016年 | 18篇 |
2015年 | 10篇 |
2014年 | 12篇 |
2013年 | 41篇 |
2012年 | 16篇 |
2011年 | 15篇 |
2010年 | 13篇 |
2009年 | 10篇 |
2008年 | 17篇 |
2007年 | 16篇 |
2006年 | 22篇 |
2005年 | 7篇 |
2004年 | 13篇 |
2003年 | 15篇 |
2002年 | 16篇 |
2001年 | 15篇 |
2000年 | 10篇 |
1999年 | 5篇 |
1998年 | 5篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 7篇 |
1992年 | 8篇 |
1991年 | 5篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1985年 | 3篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 5篇 |
1977年 | 5篇 |
1976年 | 5篇 |
1975年 | 4篇 |
1974年 | 4篇 |
1969年 | 5篇 |
1968年 | 4篇 |
1966年 | 3篇 |
排序方式: 共有475条查询结果,搜索用时 0 毫秒
341.
342.
Donald S. Shepard PhD Deborah Gurewich PhD Aung K. Lwin MBBS MS Gerald A. Reed PhD MSW Jr Morton M. Silverman MD 《Suicide & life-threatening behavior》2016,46(3):352-362
The national cost of suicides and suicide attempts in the United States in 2013 was $58.4 billion based on reported numbers alone. Lost productivity (termed indirect costs) represents most (97.1%) of this cost. Adjustment for under‐reporting increased the total cost to $93.5 billion or $298 per capita, 2.1–2.8 times that of previous studies. Previous research suggests that improved continuity of care would likely reduce the number of subsequent suicidal attempts following a previous nonfatal attempt. We estimate a highly favorable benefit–cost ratio of 6 to 1 for investments in additional medical, counseling, and linkage services for such patients. 相似文献
343.
Recall is inversely related to the number of items sharing a cue. The limiting case of unique cue-target relationships supports extremely high levels of recall, particularly when the cue is self-generated. This fact is incongruous with the importance assigned to the construct of organization in memory theory. Further, self-generated unique cue-target relationships tend to be idiosyncratic, implying that the power of unique cues should be limited to cases of self-cued memory. The experiments presented here suggest a role for organization that reconciles the fact of unique cue effectiveness with the importance of organization to memory. Two new findings are reported: Unique cue production enhances target encoding; and general cues can access particular encodings. The data are further tribute to the importance of simultaneous organizational and distinctive processing and recommend a new perspective on the function of organization in memory. 相似文献
344.
Two experiments examined the influence of postconditioning treatments of contextual cues on instrumental responding acquired with a signaled delay of reinforcement schedule. In Experiment 1, mere exposure to the conditioning context after instrumental training resulted in an attenuated response rate during an extinction test. In the second experiment, responding was decreased by exposure to the contextual cues or sessions in which signaled noncontingent reinforcements occurred. The greatest response decrement, however, occurred following unsignaled noncontingent food presentations. The results are discussed with respect to the different roles of contextual cues on operant responding. 相似文献
345.
Negative HIV-specific expectancies and AIDS-related bereavement as predictors of symptom onset in asymptomatic HIV-positive gay men. 总被引:3,自引:0,他引:3
This study examined negative HIV-related expectancies, AIDS-related bereavement, and the interaction of expectancies and bereavement as predictors of the onset of significant HIV-related symptoms among previously asymptomatic HIV-positive gay men. From a longitudinal psychobiological investigation, 72 men were selected who had been HIV-positive and asymptomatic from study entry (approximately 3 years). Participants were followed for an additional 2 1/2 to 3 1/2 years after psychosocial assessment, with symptom status assessed every 6 months. The interaction of negative HIV-specific expectancies and bereavement was a significant predictor of symptom onset. Negative HIV-specific expectancies predicted the subsequent development of symptoms among bereaved men, controlling for immunological status, use of zidovudine, high-risk sexual behavior, substance use, and depression. 相似文献
346.
This article examines the case of a Mexican American woman who was found not guilty by reason of insanity for infanticide, the murder of her young son. A detailed case history is presented with a focus on cultural issues as they affect this woman's family dynamics, assimilation and acculturation, emotionality, spirituality, and seeking of mental health treatment. In addition, a theoretical conceptualization is presented, identifying the psychodynamic operations that laid the foundation for the crime, including the normal process of identity development and the mitigating factors of gender, culture, and psychopathology. The study explores the important influences of culture in the commission of this crime as well as in subsequent treatment, highlighting the changes in society and mental health treatment that need to be made to reduce the incidence of such family violence. 相似文献
347.
Hong Z. Tan Nathaniel I. Durlach Charlotte M. Reed William M. Rabinowitz 《Attention, perception & psychophysics》1999,61(6):993-1008
In this work, the tactual information transmission capabilities of a tactual display designed to provide stimulation along a continuum from kinesthetic movements to cutaneous vibrations are assessed. The display is capable of delivering arbitrary waveforms to three digits (thumb, index, and middle finger) within an amplitude range from absolute detection threshold to about 50 dB sensation level and a frequency range from dc to above 300 Hz. Stimulus sets were designed at each of three signal durations (125, 250, and 500 msec) by combining salient attributes, such as frequency (further divided into low, middle, and high regions), amplitude, direction of motion, and finger location. Estimated static information transfer (IT) was 6.5 bits at 500 mseC., 6.4 bits at 250 mseC., and 5.6 bits at 125 msec. Estimates of IT rate were derived from identification experiments in which the subject’s task was to identify the middle stimulus in a sequence of three stimuli randomly selected from a given stimulus set. On the basis of the extrapolations from these IT measurements to continuous streams, the IT rate was estimated to be about 12 bits/seC., which is roughly the same as that achieved by Tadoma users in tactual speech communication. 相似文献
348.
Vincent J Morello Ralph R Turner Nedra E Reed 《Journal of experimental child psychology》1977,24(1):74-85
Differences in performance between lower- and middle-class children on partial reinforcement tasks have often been attributed to motivational differences between the groups. An alternate hypothesis suggests that different environmental experiences have resulted in differences in familiarity with problem-solving tasks. Both of these hypotheses have generated research; neither has received clear-cut support. A third hypothesis is that there is a developmental lag in the lower class so that equating the two groups on chronological age confounds the social class by cognitive-level interaction. In the present study, children were matched on cognitive abilities (preoperational, transitional, and concrete operational) and administered a partial reinforcement task. The main hypotheses that social-class differences would not be found but that cognitive level differences in success on the task and in problem-solving strategies would be found were supported. Implications were made concerning a developmental learning model that includes both qualitative and quantitative changes in abilities. 相似文献
349.
Charlotte Reed 《Attention, perception & psychophysics》1975,18(2):65-70
Reaction times (RTs) were measured for decisions in a same-different discrimination of successive vowel-consonant nonsense syllables. Averaged data showed that “same” RTs were faster than “different” RTs and that the “different” RT decreased as the number of features (Wickelgren, 1966) by which a pair contrasted increased. For individual phonemic comparisons, two of the dependent variables, P(S I d), or probability of responding “same” to a different trial and the mean correct “different” RT, were related in that the RT increased as P(S I d) increased. The size of the difference between “same” and “different” RTs for a given phonemic contrast was directly related to P(S | d). The difficulty of a comparison, as described by P(S I d) and by the difference between correct “same” and “different” RTs, was explained through a markedness classification of phonemes. 相似文献
350.
G S Reed 《The Psychoanalytic quarterly》1985,54(2):234-269
The assumptions which predominate in the reading of psychoanalytic theory differ from those involved in listening to the patient in the psychoanalytic process. A weakness of much applied psychoanalysis is that these two sets of assumptions are confused and theoretical certainty is substituted for clinical exploration. This difference in assumptions is illustrated by the different assumptions about the signifier in two poems. In Freud's work on Leonardo, both attitudes toward the signifier are present, but the clinical aspect is located in Freud's method, not in his historical construction. The problems of maintaining a similar clinical stance in applied psychoanalysis are explored, and Freud's tendency toward historical certainty is speculatively considered as an instance of the parallelism phenomenon. 相似文献