全文获取类型
收费全文 | 2321篇 |
免费 | 385篇 |
出版年
2023年 | 14篇 |
2022年 | 15篇 |
2021年 | 35篇 |
2020年 | 47篇 |
2019年 | 52篇 |
2018年 | 137篇 |
2017年 | 146篇 |
2016年 | 165篇 |
2015年 | 111篇 |
2014年 | 74篇 |
2013年 | 287篇 |
2012年 | 132篇 |
2011年 | 167篇 |
2010年 | 86篇 |
2009年 | 140篇 |
2008年 | 101篇 |
2007年 | 119篇 |
2006年 | 88篇 |
2005年 | 71篇 |
2004年 | 65篇 |
2003年 | 71篇 |
2002年 | 75篇 |
2001年 | 33篇 |
2000年 | 32篇 |
1999年 | 26篇 |
1998年 | 24篇 |
1997年 | 19篇 |
1996年 | 18篇 |
1995年 | 31篇 |
1994年 | 20篇 |
1993年 | 17篇 |
1992年 | 16篇 |
1991年 | 15篇 |
1990年 | 17篇 |
1989年 | 13篇 |
1988年 | 13篇 |
1987年 | 15篇 |
1986年 | 12篇 |
1985年 | 18篇 |
1984年 | 9篇 |
1983年 | 10篇 |
1982年 | 17篇 |
1981年 | 17篇 |
1980年 | 11篇 |
1979年 | 12篇 |
1978年 | 12篇 |
1977年 | 11篇 |
1976年 | 10篇 |
1975年 | 11篇 |
1974年 | 14篇 |
排序方式: 共有2706条查询结果,搜索用时 15 毫秒
121.
Few tools for research in proper names have been available—specifically, there is no large-scale corpus of proper names. Two
corpora of proper names were constructed, one based on U.S. phone book listings, the other derived from a database of Usenet
text. Name frequencies from both corpora were compared with human subjects’ reaction times (RTs) to the proper names in a
naming task. Regression analysis showed that the Usenet frequencies contributed to predictions of human RT, whereas phone
book frequencies did not. In addition, semantic neighborhood density measures derived from the HAL corpus were compared with
the subjects’ RTs and found to be a better predictor of RT than was frequency in either corpus. These new corpora are freely
available on line for download. Potentials for these corpora range from using the names as stimuli in experiments to using
the corpus data in software applications. 相似文献
122.
This paper reports some experimental results on the coordination of finger and vocal responses with passing through a target position in multjjoint arm movement. In Experiment 1, we found that the difference in the timing of finger and vocal responses cannot be attributed entirely to efferent or representational effects. Instead, it appears to reflect the extent to which information about the internal stimuli generated by the arm movement are available to the centers controlling these different responses. That is, it is a compatibility effect. In Experiment 2, the case in which a finger response is made on the same side of the body as the moving arm was compared with the case in which it is made with the contralateral hand, which remains static. The interaction effect observed suggests that the path-ways subserving coordinated responses are informationally encapsulated, so that information about arm movement is not shared between the neural centers controlling different coordinated responses. 相似文献
123.
The parity effect in arithmetic problem verification tasks refers to faster and more accurate judgments for false equations when the odd/even status of the proposed answer mismatches that of the correct answer. In two experiments, we examined whether the proportion of incorrect answers that violated parity or the number of even operands in the problem affected the magnitude of these effects. Experiment 1 showed larger parity effects for problems with two even operands and larger parity effects during the second half of the experiment. Experiment 2 replicated the results of Experiment 1 and varied the proportion of problems violating parity. Larger parity effects were obtained when more of the false problems violated parity. Moreover, all three effects combined to show the greatest parity effects in conditions with a high proportion of parity violations in problems containing two even operands that were solved during the second half of the experiment. Experiment 3 generalized the findings to the case of five rule (i.e., checking whether a false product ends in 5 or 0), another procedure for solving and verifying multiplication problems quickly. These results (1) delineate further constraints for inclusion in models of arithmetic processing when thinking about how people select among verification strategies, (2) show combined effects of variables that traditionally have been shown to have separate effects on people's strategy selection, and (3) are consistent with a view of strategy selection that suggests a bias either in the allocation of cognitive resources in the execution of strategies or in the order of execution of these strategies; they argue against a simple, unbiased competition among strategies. 相似文献
124.
125.
Joseph S. Lalli Timothy R. Vollmer Patrick R. Progar Carrie Wright John Borrero Dency Daniel Christine Hoffner Barthold Kathy Tocco William May 《Journal of applied behavior analysis》1999,32(3):285-296
We compared the effects of reinforcing compliance with either positive reinforcement (edible items) or negative reinforcement (a break) on 5 participants' escape-maintained problem behavior. Both procedures were assessed with or without extinction. Results showed that compliance was higher and problem behavior was lower for all participants when compliance produced an edible item rather than a break. Treatment gains were achieved without the use of extinction. Results are discussed regarding the use of positive reinforcement to treat escape behavior. 相似文献
126.
J. Christopher McGinnis Patrick C. Friman William D. Carlyon 《Journal of applied behavior analysis》1999,32(3):375-379
This study used a multielement baseline design to analyze the effects of token rewards delivered contingent upon completion of math problems by 2 middle-school boys. Time spent on math and number of work pages completed increased (with high accuracy) during reward conditions and were maintained during fading and withdrawal. At follow-up, time spent and work pages completed remained well above baseline for 1 boy and fell below for the other, while accuracy remained high and ratings of liking math were the highest possible for both boys. Overall, the results are inconsistent with warnings about use of token rewards to motivate children. 相似文献
127.
128.
129.
130.