全文获取类型
收费全文 | 6414篇 |
免费 | 276篇 |
国内免费 | 5篇 |
出版年
2020年 | 94篇 |
2019年 | 128篇 |
2018年 | 174篇 |
2017年 | 174篇 |
2016年 | 179篇 |
2015年 | 124篇 |
2014年 | 168篇 |
2013年 | 741篇 |
2012年 | 243篇 |
2011年 | 270篇 |
2010年 | 167篇 |
2009年 | 177篇 |
2008年 | 227篇 |
2007年 | 246篇 |
2006年 | 216篇 |
2005年 | 203篇 |
2004年 | 176篇 |
2003年 | 183篇 |
2002年 | 209篇 |
2001年 | 143篇 |
2000年 | 136篇 |
1999年 | 108篇 |
1998年 | 92篇 |
1997年 | 76篇 |
1996年 | 76篇 |
1995年 | 71篇 |
1994年 | 78篇 |
1993年 | 61篇 |
1992年 | 86篇 |
1991年 | 78篇 |
1990年 | 70篇 |
1989年 | 74篇 |
1988年 | 51篇 |
1987年 | 54篇 |
1986年 | 67篇 |
1985年 | 68篇 |
1984年 | 80篇 |
1983年 | 61篇 |
1982年 | 77篇 |
1981年 | 72篇 |
1980年 | 57篇 |
1979年 | 66篇 |
1978年 | 66篇 |
1977年 | 56篇 |
1976年 | 50篇 |
1975年 | 52篇 |
1974年 | 57篇 |
1973年 | 53篇 |
1970年 | 48篇 |
1967年 | 55篇 |
排序方式: 共有6695条查询结果,搜索用时 15 毫秒
91.
Philip A. Perrone 《Journal of counseling and development : JCD》1967,46(3):268-274
97 parent-daughter pairs and 80 parent-son pairs were administered a value-orientation instrument when the children were in junior high school and again 2 years later. Girls became more concerned with what they could give of themselves in their eventual work. Girls' parents began to stress home-making qualities. Boys became less concerned with the more tangible rewards of work and more concerned with utilizing their capabilities. Boys' parents rated all the values more important than did their sons. Boys and their parents evidenced more disagreement regarding values than did girls and their parents. However, when focusing on the most important value, there is considerable agreement between children and parents. Parents have remained consistent in their value ratings over the 2 years while children have changed their ratings in the direction of the values their parents hold for them. The children of parents who have changed their value ratings were not different from children of parents who remained consistent in the ratings. Nor were children who changed their value ratings different from those whose values were stable. 相似文献
92.
93.
94.
Lars Smith 《Journal of the experimental analysis of behavior》1967,10(6):529-533
Three pigeons were each trained to perform a discrimination problem and a matching problem. Following acquisition, delays of 1 to 7 sec were interposed after stimulus presentation on both problems. Accuracy of responding on these two types of delay procedures was observed to be a function of length of delay interval. Performance was consistently poorer on the delayed matching problem than on the delayed discrimination problem. 相似文献
95.
Holley argues that the appearance of effects related to person means in the factor analysis of G indices is due to Levy's failure to adopt the procedure of 'double extending' the score matrix in Q analysis. Holley also points out that this same procedure has no effect upon the G indices. Therefore there is no argument and Levy's results and conclusions stand unaltered. 相似文献
96.
Kenneth D. Hopkins Robert A. Smith Warren G. Findley John N. McCall 《Psychometrika》1967,32(3):355-360
97.
Marilyn C. Smith 《Quarterly journal of experimental psychology (2006)》1967,19(4):350-352
Proponents of a “single channel” theory of the psychological refractory period have not specified whether the single channel occupies only the decision component of the response selection, only the motor or response component, or both. In this experiment, the delay in the RT to the second of two successively presented stimuli was examined as a function of whether or not an overt motor response was made to the first stimulus, keeping the decision component constant. It was found that in both conditions RT2 was delayed, suggesting that the decision component was a part of the single channel. However, RT2 was delayed by a significantly greater amount if a motor response was required, indicating that the motor component is part of the single channel as well. Implications of the results for an expectancy theory of the psychological refractory period are discussed. 相似文献
98.
Vernon Rowland Herbert Bradley Paul School Dan Deutschman 《Integrative psychological & behavioral science》1967,2(1):3-22
Cortical steady-potential shifts obtained from nonpolarizing electrodes chronically implanted in freely moving cats and rats reveal cortical activation related to urgency of response to unconditional and conditional stimuli. Such shifts appear relatively independent of activation in the rhythmic electrocorticogram and are related to higher levels of activation. Shifting is found to be modulated by drive and level of learning, suggesting a correlation with the proposed reaction potential of Hull. Both approach and avoidance “urgency” are reflected in the onset slope and amplitude of SP shifts in a manner suggesting modulation of cortical activation by the effects of behavioral regulation of stimulus conditions. 相似文献
99.
In this paper we concern ourselves with the problem of whether or not conditioning stimuli of other modalities or stimuli applied to a distant locus of the body interact with a sensitive test of somesthetic temporal acuity we have called the gap test. The results of the experiment indicate that visual stimuli do not exert an observable influence on this temporal judgment, but that auditory stimuli and contralateral stimulation in the same modality do show a significant but relatively small effect. This is compared and contrasted with the very large and persistent effect reported when the conditioning stimulus is applied to the same electrodes as the gap test. By comparing our results with experiments of similar design carried out on lower animals by other investigators, some insights into the neural localization of the reported effects is obtained. 相似文献
100.
H. Philip Zeigler L. B. Wyckoff Jr. 《Quarterly journal of experimental psychology (2006)》1961,13(3):129-140
An operant response in the pigeon, whose performance results in exposure to the discriminative stimuli, is described and suggested as an experimental analogue for “observing.” Such an operant response is then used to explore the relationship between observing responses and discrimination learning in a variety of discrimination situations, of progressively increasing complexity. In general, the results support the contention that the development and maintainence of observing responses is closely related to the degree of differential behaviour manifested toward the discriminative stimuli. Certain modifications are suggested in the theoretical formulation underlying the concept of “observing responses.” 相似文献