全文获取类型
收费全文 | 85869篇 |
免费 | 1709篇 |
国内免费 | 8篇 |
专业分类
87586篇 |
出版年
2020年 | 857篇 |
2019年 | 1120篇 |
2018年 | 1473篇 |
2017年 | 1485篇 |
2016年 | 1634篇 |
2015年 | 1170篇 |
2014年 | 1382篇 |
2013年 | 6323篇 |
2012年 | 2557篇 |
2011年 | 2703篇 |
2010年 | 1685篇 |
2009年 | 1702篇 |
2008年 | 2335篇 |
2007年 | 2376篇 |
2006年 | 2157篇 |
2005年 | 1915篇 |
2004年 | 1791篇 |
2003年 | 1691篇 |
2002年 | 1785篇 |
2001年 | 2693篇 |
2000年 | 2661篇 |
1999年 | 2003篇 |
1998年 | 957篇 |
1997年 | 863篇 |
1996年 | 849篇 |
1995年 | 800篇 |
1993年 | 780篇 |
1992年 | 1672篇 |
1991年 | 1544篇 |
1990年 | 1524篇 |
1989年 | 1413篇 |
1988年 | 1401篇 |
1987年 | 1318篇 |
1986年 | 1379篇 |
1985年 | 1439篇 |
1984年 | 1210篇 |
1983年 | 1108篇 |
1982年 | 813篇 |
1979年 | 1294篇 |
1978年 | 930篇 |
1975年 | 1036篇 |
1974年 | 1159篇 |
1973年 | 1271篇 |
1972年 | 1086篇 |
1971年 | 993篇 |
1970年 | 898篇 |
1969年 | 929篇 |
1968年 | 1181篇 |
1967年 | 1061篇 |
1966年 | 929篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
We investigated Rorschach responses associated with narcissism and hysteria in a group of antisocial personality disordered offenders. The Rorschach protocols of 42 subjects who met the criteria from the Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev. [DSM-III-R]; American Psychiatric Association, 1987) for antisocial personality disorder were analyzed using Exner's (1986) criteria for pairs, reflections, and personal responses, and Gacono's (1988) criteria for the impressionistic response. Severe, or primary psychopaths (n = 21), scoring greater than or equal to 30 on the Hare (1980) Psychopathy Checklist (PCL), were compared to moderate, or secondary pscyhopaths (n = 21), scoring less than 30 on the PCL. The mean number of pair and impressionistic responses did not significantly differ for the two antisocial groups. The highly psychopathic group, however, did exhibit a significantly greater mean number of reflection and personal responses. We discuss pair and reflection responses and their relationship to narcissism in psychopathic disturbance. We recommend interpreting the personal response within the context of the psychopathic character and view personal responses as expressions of narcissism and omnipotence in highly psychopathic subjects. We also hypothesize that the impressionistic responses are indicative of primitive dissociative processes and hysteria in psychopathic subjects, and that their presence provides construct validity for the work of Guze (1976) and others who suggested an underlying histrionic dimension to psychopathy. 相似文献
962.
C B Gacono 《Journal of personality assessment》1990,54(3-4):589-600
This study assessed the object relations, defensive operations, and level of psychopathy and narcissism in a group of antisocial personality disordered offenders. The Rorschach protocols of 33 subjects who met the Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev. [DSM-III-R], American Psychiatric Association, 1987) criteria for antisocial personality disorder were analyzed utilizing Kwawer's (1980) criteria for borderline object relations categories (borderline phenomena), the Lerner and Lerner (1980) Defense Scale, and a number of experimental criteria including Cooper and Arnow's (1986) defense criteria. Level of narcissism was assessed utilizing Exner's (1973) Self-Focus Sentence Completion Test. Hare's Psychopathy Checklist was used as an independent variable to determine a subject's level of psychopathy. Those subjects scoring 30 or more on the psychopathy checklist were compared to subjects scoring less than 30. The level of narcissism or proportion of defenses did not differ significantly between the severe psychopaths (greater than or equal to 30) and the moderate psychopaths (less than 30). The severe psychopaths produced a significantly greater number of borderline object relations. I conclude that antisocial individuals tend to be highly egocentric, and that narcissism is one component of psychopathy. Severe psychopaths, as a group, tend to be more borderline in their functioning than those exhibiting moderate levels of psychopathic disturbance. I also conclude that individuals who are incarcerated for felony offenses and also meet the DSM-III-R criteria for antisocial personality disorder exhibit degrees of borderline personality organization. 相似文献
963.
Clerical people, returning to secular life, may undergo shifts in self-experience, including alterations in internal object relations. Self-psychology, positing the importance to health of cohesion of all aspects of self, provides a theoretical model for exploring such shifts and their facilitation through psychoanalytic psychotherapy. A case of a released Roman Catholic priest is discussed to illustrate dynamic processes. Emphasis is on a clinical approach that does not require conversion of religious and spiritual self-experience into drive derivative formulations 相似文献
964.
Choice between delayed reinforcers and fixed-ratio schedules requiring forceful responding. 总被引:1,自引:1,他引:0
下载免费PDF全文

This experiment measured pigeons' choices between delayed reinforcers and fixed-ratio schedules in which a force of approximately 0.48 N was needed to operate the response key. In ratio-delay conditions, subjects chose between a fixed-ratio schedule and an adjusting delay. The delay was increased or decreased several times a session in order to estimate an indifference point--a delay duration at which the two alternatives were chosen about equally often. Each ratio-delay condition was followed by a delay-delay condition in which subjects chose between the adjusting delay and a variable-time schedule, with the components of this schedule selected to match the ratio completion times of the preceding ratio-delay condition. The adjusting delays at the indifference point were longer when the alternative was a fixed-ratio schedule than when it was a matched variable-time schedule, which indicated a preference for the matched variable-time schedules over the fixed-ratio schedules. This preference increased in a nonlinear manner with increasing ratio size. This nonlinearity was inconsistent with a theory that states that indifference points for both time and ratio schedules can be predicted by multiplying the choice response-reinforcer intervals of the two types of schedules by different multiplicative constants. Two other theories, which predict nonlinear increases in preference for the matched variable-time schedules, are discussed. 相似文献
965.
966.
967.
The early versus late selection issue in attention models was examined by means of a new methodology. Through cues or precues, attention was directed to one location of a multistimulus visual display and, while attention was so engaged, the identity of a stimulus located at a different position in the display was changed. By varying the time after display onset before the stimulus was changed, we controlled the preview time that the original stimulus was represented on the retina. Then, using a marker cue, we directed the subject's attention to the location of the changed stimulus. The subject's response was a timed discrimination between two possible target letters. The data of main interest was the effect of preview time upon the subject's latency in identifying the new target that appeared in the changed location. We found that the preview time of the original stimulus, before RT was affected to the new target, depended upon whether the original stimulus was a neutral (noise) letter or whether it was the alternative target. When the original stimulus was a noise letter, RTs to the new target were just as fast as those obtained in the control condition in which the target was present throughout the preview interval and did not change its identity. Significant effects upon RT were obtained at preview times of 83 msec when the original stimulus was one of the targets that changed to the alternative target. Preview times also varied as a function of precuing. Preview times were correspondingly shortened when the first cue occurred 50 msec before display onset, thus providing an extra 50 msec for attention to be directed to the first display location. The results were interpreted in terms of two separate information-processing systems in the human: an automatic system and an attentional system. Even though a stimulus may have been automatically processed, when the attention system is directed to that stimulus, processing starts at the beginning again. 相似文献
968.
J. Claude Evans 《Man and World》1990,23(2):175-189
I would like to thank Jonathan Lee, Terry Pinkard, Steven S. Schwarzschild, Jill Petzall, Bob Gibbs, Bill Hamrick and Jim Bohman for their very helpful criticisms of earlier drafts of this paper. 相似文献
969.
An analysis has been undertaken of the stochastic behavior of the time series which defines the duration of utterances exchanged by patients and therapists in six recorded sessions of psychotherapy. Each series followed a Box-Jenkins time series model of order (1, 0, 0): that is, each behaved as a first-order autoregressive process, sensitive to the prior state of the system. The confidences associated with the parameters of the autoregressive models were very high. In addition, the histograms of length of each utterance indicated an underlying Poisson model for the emergence of speech. The parameters of the Poisson and autoregressive models varied with each patient/therapist pair. Signatures for the process dynamics of the speaker-role variable were obtained. The two analyses suggest fundamental structures within the psychotherapeutic dialogue. The Box-Jenkins results provide a global summary of the inner structure of the series and its progression, while the Poisson results describe its instantaneous behavior. This work is offered as a part of new efforts to apply scientific and mathematical methods to the psychotherapeutic domain. 相似文献
970.
This study is a systematic replication of the effects of insulin doses on operant behavior reinforced (in an earlier study) by fixed-ratio schedules of microwave (MW) reinforcement. In this study, insulin and dextrose doses were administered (ip) prior to fixed-interval 2-min. schedules of MW reinforcement in rats tested in a cold environment. Six Sprague-Dawley rats were conditioned to regulate their thermal environment with 5-sec. exposures of MW radiation (SAR = 0.34 Watts/kg/(mW/cm2) under the FI-2' schedules. Humulin-regular insulin and 50% solutions of dextrose were administered (ip) alternately with saline control sessions for 8-hr. durations. A within-subjects, repeated-measures 4 x 8 x 3 factorial analysis of variance design showed that insulin doses suppressed operant responding for heat, which confirmed the results of the earlier study under a different schedule. In addition, high doses of dextrose had similar suppressing effects on operant responding for heat. The data are interpreted in terms of the discriminative properties of increased thermogenesis produced by the insulin and dextrose doses. The suppressing effects were more pronounced for the first two hours, yet they persisted for approximately six hours of the 8-hr. sessions. 相似文献