全文获取类型
收费全文 | 81575篇 |
免费 | 3168篇 |
国内免费 | 38篇 |
出版年
2020年 | 842篇 |
2019年 | 1043篇 |
2018年 | 1508篇 |
2017年 | 1462篇 |
2016年 | 1583篇 |
2015年 | 1083篇 |
2014年 | 1332篇 |
2013年 | 7429篇 |
2012年 | 2337篇 |
2011年 | 2519篇 |
2010年 | 1529篇 |
2009年 | 1509篇 |
2008年 | 2332篇 |
2007年 | 2230篇 |
2006年 | 2000篇 |
2005年 | 1775篇 |
2004年 | 1733篇 |
2003年 | 1658篇 |
2002年 | 1651篇 |
2001年 | 2588篇 |
2000年 | 2498篇 |
1999年 | 1907篇 |
1998年 | 973篇 |
1997年 | 865篇 |
1996年 | 920篇 |
1995年 | 892篇 |
1994年 | 866篇 |
1993年 | 862篇 |
1992年 | 1701篇 |
1991年 | 1572篇 |
1990年 | 1564篇 |
1989年 | 1381篇 |
1988年 | 1368篇 |
1987年 | 1351篇 |
1986年 | 1363篇 |
1985年 | 1399篇 |
1984年 | 1174篇 |
1983年 | 988篇 |
1982年 | 799篇 |
1979年 | 1123篇 |
1978年 | 841篇 |
1975年 | 1033篇 |
1974年 | 1038篇 |
1973年 | 1096篇 |
1972年 | 1001篇 |
1971年 | 895篇 |
1970年 | 797篇 |
1968年 | 993篇 |
1967年 | 918篇 |
1966年 | 840篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
172.
173.
174.
F. . W. Jones A. J. Wills I. P. L. McLaren 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1998,51(1):33-58
Although it is currently popular to model human associative learning using connectionist networks, the mechanism by which their output activations are converted to probabilities of response has received relatively little attention. Several possible models of this decision process are considered here, including a simple ratio rule, a simple difference rule, their exponential versions, and a winner-take-all network. Two categorization experiments that attempt to dissociate these models are reported. Analogues of the experiments were presented to a single-layer, feed-forward, delta-rule network. Only the exponential ratio rule and the winner-take-all architecture, acting on the networks' output activations that corresponded to responses available on test, were capable of fully predicting the mean response results. In addition, unlike the exponential ratio rule, the winner-take-all model has the potential to predict latencies. Further studies will be required to determine whether latencies produced under more stringent conditions conform to the model's predictions. 相似文献
175.
176.
The purpose of this meta-analysis of randomized controlled trials was to evaluate the efficacy of psychological interventions for adults with noncancerous chronic low back pain (CLBP). The authors updated and expanded upon prior meta-analyses by using broad definitions of CLBP and psychological intervention, a broad data search strategy, and state-of-the-art data analysis techniques. All relevant controlled clinical trials meeting the inclusion criteria were identified primarily through a computer-aided literature search. Two independent reviewers screened abstracts and articles for inclusion criteria and extracted relevant data. Cohen's d effect sizes were calculated by using a random effects model. Outcomes included pain intensity, emotional functioning, physical functioning (pain interference or pain-specific disability, health-related quality of life), participant ratings of global improvement, health care utilization, health care provider visits, pain medications, and employment/disability compensation status. A total of 205 effect sizes from 22 studies were pooled in 34 analyses. Positive effects of psychological interventions, contrasted with various control groups, were noted for pain intensity, pain-related interference, health-related quality of life, and depression. Cognitive-behavioral and self-regulatory treatments were specifically found to be efficacious. Multidisciplinary approaches that included a psychological component, when compared with active control conditions, were also noted to have positive short-term effects on pain interference and positive long-term effects on return to work. The results demonstrated positive effects of psychological interventions for CLBP. The rigor of the methods used, as well as the results that reflect mild to moderate heterogeneity and minimal publication bias, suggest confidence in the conclusions of this review. 相似文献
177.
It was predicted that trained observers would detect deception more accurately than untrained observers. More specifically, it was predicted that the highest deception detection accuracy would be found among trained observers judging the veracity of low self-monitors and unrehearsed liars, whereas the lowest detection accuracy would be found among untrained observers judging the veracity of high self-monitors and rehearsed deceivers. It also was hypothesized that the discrepancy between observers‘actual ability to detect deception and their certainty in the accuracy of their judgments would be smaller for trained observers than for untrained observers. Observers trained to detect deception used six behavioral cues based on research by deTurck and Miller (1985): (a) message duration, (b) response latency, (c) adaptors, (d) pauses, (e) nonfluencies, and (f) hand gestures. Results confirmed both hypotheses. 相似文献
178.
F Rigalleau D Caplan 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2000,53(1):23-52
The naming latency of a pronoun was measured when a single previously presented name in a discourse either agreed or did not agree with the pronoun in gender and person. An effect of agreement was found both under conditions in which subjects were likely to have engaged in strategic processing of the pronoun (Experiment 1) and under conditions in which this was unlikely (Experiment 3). The effect of gender agreement was also investigated when two noun phrases were present in the discourse. The results continued to show an immediate effect of gender agreement (naming latencies increased when a pronoun did not agree with one of two previously presented nouns) under experimental conditions likely to engender strategic processing (Experiment 2). This last effect was not significant under experimental conditions that were not likely to engender strategic processing (Experiment 3). The results are discussed in terms of models of the process of identifying the referent of a pronoun in a discourse. 相似文献
179.
Suicide and homicide rates by age were analyzed for Canada and the United States, indicating that suicide is higher in Canada and that homicide is higher in the United States. Results indicated a positive association between homicide and suicide rates in the United States but these two rates of death were not significantly associated in Canada. Holinger (1987) had associated the relative size of the cohort to the rates of suicide and homicide in young people in the United States. The more current data in both countries did not support Holinger's results. Using the measure devised by Easterlin (1980) and Ahlburg and Schapiro (1984) –that is, the proportion of youths aged 15–24 relative to adults aged 25–64–the correlation between the size of the youth cohort and the suicide rate of youths aged 15–24 was negative. It is concluded that the two patterns in these two countries may be explained from a historical perspective. 相似文献
180.
We examined whether four personality traits—trait aggression, trait industriousness, trait deceptiveness, and trait self-control—were differentially related to 11 narrow-bandwidth CWB facets: (a) property destruction, (b) inappropriate verbal actions, (c) inappropriate physical actions, (d) poor attendance, (e) poor quality work, (f) unsafe behavior, (g) theft and related behavior, (h) misuse of information, (i) misuse of time and resources, (j) alcohol use, and (k) drug use. Based on responses from 404 employed participants recruited using Mechanical Turk, we found that each narrow-bandwidth personality trait often yielded stronger relationships with overall CWB than with narrow-bandwidth CWB facets. 相似文献