全文获取类型
收费全文 | 1850篇 |
免费 | 62篇 |
专业分类
1912篇 |
出版年
2020年 | 17篇 |
2019年 | 29篇 |
2018年 | 31篇 |
2017年 | 42篇 |
2016年 | 38篇 |
2015年 | 33篇 |
2014年 | 40篇 |
2013年 | 207篇 |
2012年 | 58篇 |
2011年 | 63篇 |
2010年 | 27篇 |
2009年 | 27篇 |
2008年 | 42篇 |
2007年 | 65篇 |
2006年 | 46篇 |
2005年 | 42篇 |
2004年 | 39篇 |
2003年 | 46篇 |
2002年 | 49篇 |
2001年 | 66篇 |
2000年 | 59篇 |
1999年 | 55篇 |
1998年 | 30篇 |
1997年 | 26篇 |
1996年 | 14篇 |
1995年 | 19篇 |
1994年 | 19篇 |
1993年 | 20篇 |
1992年 | 32篇 |
1991年 | 33篇 |
1990年 | 45篇 |
1989年 | 28篇 |
1988年 | 23篇 |
1987年 | 26篇 |
1986年 | 35篇 |
1985年 | 34篇 |
1983年 | 16篇 |
1982年 | 17篇 |
1980年 | 18篇 |
1979年 | 21篇 |
1978年 | 27篇 |
1976年 | 18篇 |
1975年 | 20篇 |
1974年 | 21篇 |
1973年 | 22篇 |
1972年 | 23篇 |
1970年 | 23篇 |
1969年 | 18篇 |
1968年 | 15篇 |
1967年 | 20篇 |
排序方式: 共有1912条查询结果,搜索用时 7 毫秒
71.
Redundancy gain and orthogonal interference for height and width were demonstrated in two experiments using a relative coding task with number of intertrial repetitions controlled. Orthogonal interference was shown to be perceptually based rather than simply an intertrial repetitions effect as suggested by Felfoldy (1974). These results from a relative coding task were discussed in terms of the previous multidimensional processing literature. It was concluded that Lockhead’s (1972t model has been applied too generally. An alternative model (a parallel, dimensional analysis stage followed by a stage in which dimensional information is integrated) was suggested. 相似文献
72.
73.
Further to the debate between Kearins (1978) and Drinkwater (1978), visual memory skills of Aboriginal and white Australian children were examined using Drinkwater's version of Kim's game with desert Aboriginal and rural white children. Older children remembered more than younger ones, and Aboriginal children recalled more natural objects than white children. There was no difference between the groups in recall of manufactured objects, nor between recall of manufactured and natural objects within each group. Aboriginal children remembered significantly more objects overall than white children when the task was first administered. On a second occasion, after a procedure designed to orient children towards the use of predominantly visual rather than verbal memorising strategies, there was no significant difference between the groups. 相似文献
74.
The present study attempted to demonstrate a correspondence between artistic style and the personality of the creator. Personality style, defined as a cognitive-affective system of defenses and controls, was identified for 20 renowned painters through an analysis of their individual Rorschach protocols. Their creative work was classified independently by a jury of 4 persons (one art critic; two eminent painters and the junior author) into stylistic categories similar to those elaborated by the senior author for the Rorschach. The overall correspondence achieved was statistically significant (.72, p < .01), with individual correlations ranging from .75 to .86 (p < .01). 相似文献
75.
Erik Z. Woody 《Journal of personality》1983,51(2):236-247
A critical examination of dialectical person perception as advanced by Lamiell, Foss, Trierweiler, and Leffel, (1983) reveals some important problems both in its empirical basis and in the underlying model of the intuitive personologist. The present article discusses these problems and suggests some alternative conceptions of the intuitive personologist. 相似文献
76.
In three experiments, rats learned to respond differentially to reinforced and nonreinforced trials when the length of the intertrial interval (ITI) predicted the trial outcome (reinforcement or nonreinforcement). Rats in control groups, for whom the length of the ITI did not predict the outcome, did not show differential performance on nonreinforced and reinforced trials. Generalization gradients obtained following discrimination training were comparable to those obtained following discrimination training with other types of discriminative stimuli. That is, groups which had shown differential performance in discrimination training yielded generalization gradients with fastest speeds at the previously reinforced ITIs, slowest speeds at the previously nonreinforced ITIs, and intermediate speeds at ITIs of intermediate length. Control groups yielded flat gradients across all ITIs tested. These effects were shown for relative time discrimination (short time = reinforcement, long time = nonreinforcement, or the reverse) and also for an absolute time discrimination (long and short time = reinforcement, middle time = nonreinforcement or the reverse). This method was effective for time duration measured in minutes rather than seconds, as is more commonly the case. 相似文献
77.
A logit vector model and a logit ideal point model are presented for external analysis of paired comparison preference judgments aggregated over a homogeneous group. The logit vector model is hierarchically nested within the logit ideal point model so that statistical tests are available to distinguish between these two models. Generalized least squares estimation procedures are developed to account for heteroscedastic sampling error variances and specification error variances. Two numerical illustrations deal with judgments concerning employee compensation plans and preferences for salt and sugar in the brine of canned green beans. 相似文献
78.
Three Machiavellian (Mach) scales together with measures of authoritarian personality, the EPQ and the 16PF test were subjected to a rotated factor analysis in order to identify and locate in personality space a Mach factor or factors. One Mach factor was identified independent of the main personality factors. 相似文献
79.
80.
To examine the coordination of muscles during multijoint movement, we compared the response of wrist muscles to perturbations about the elbow joint with their activation during a volitional elbow movement. The purpose was to test the following two predictions: (a) Responses can occur in muscles not stretched by the perturbation, as has been reported for other multijoint systems; and (b) the motor pattern in response to a perturbation mimics an opposing volitional motor pattern across the two joints. We recorded the electromyographic (EMG) activity of elbow and wrist muscles as well as the flexion/extension motions at the elbow and wrist joints during individual trials that either involved a response to a torque perturbation that extended the elbow or required volitional elbow flexion. The results of this study confirmed that responses were elicited in the nonstretched wrist muscles when the elbow joint was perturbed. The same motor sequence of elbow and wrist flexors was present for both the volitional and perturbation task (with the forearm supinated), regardless of whether the wrist joint was immobilized or freely moving. The findings suggest that the nervous system relies on the purposeful coupling of elbow and wrist flexors to counter the inertial effects during the unrestricted voluntary movement, even though the coupling does not appear to be purposeful during the perturbation or with the wrist immobilized. The coupling of elbow and wrist flexors, however, was not rigidly fixed, as evidenced by muscle onsets that adapted over repeated perturbation trials and a reversal of the wrist muscle activated (wrist extensor) when the forearm was pronated. Hence, the coupling of muscle activities can be modified quantitatively when not beneficial and can be altered qualitatively with different initial configurations of the arm. 相似文献