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661.
662.
Speech output and finger movements were recorded as right-handed males repeated a syllable while making cyclical finger movements in three experimental conditions: (2) maintaining constant amplitude in both response systems; (b) alternating speech amplitude while attempting to maintain constant finger movement amplitude; and (c) alternating finger movement amplitude while attempting to maintain constant speech amplitude. Observations showed that output of the two response systems was coupled (one syllable was uttered with each finger movement) and entrained in amplitude (the amplitude pattern of the response that the subject attempted to keep constant followed that of the concurrently-active amplitude-modulated response). These interactions were bidirectional and were present with both left-handed and right-handed finger movements. The interactions are more extensive and subtle than mere interference wtih one response system by the other, and apparently do not depend on anatomical overlap of the responding neural systems. 相似文献
663.
The purpose of this study was to evaluate the effectiveness of oral reading as a teaching technique for improving reading comprehension of 11 Educable Mentally Handicapped or Severe Learning Disabled adolescents. Students were tested on their ability to answer comprehension questions from a short factual article. Comprehension improved following the oral reading for students with a reading grade equivalent of less than 5.5 (measured from the Wide Range Achievement Test) but not for those students having a grade equivalent of greater than 5.5. This association was statistically significant (p = less than .01). Oral reading appeared to improve comprehension among the poorer readers but not for readers with moderately high ability. 相似文献
664.
Form symbolism using squares and circles can aid recall. In Experiment 1, subjects saw 20 words, each presented in a circle or a square. Words like SOFT and MOTHER were presented in circles in the “congruent” condition, whereas the same words were presented in squares in the “incongruent” condition. Two experiments revealed that words in the congruent condition were more likely to be recalled. A comparison of the conditions with a baseline condition, in which 20 listed words were not closely related to either of the shapes, suggests that the effect was more likely due to facilitation produced by the congruent condition than to inhibition from the incongruent condition. 相似文献
665.
Marisa Carrasco Denise L. Evert Irene Chang Svetlana M. Katz 《Attention, perception & psychophysics》1995,57(8):1241-1261
The serial pattern found for conjunction visual-search tasks has been attributed to covert attentional shifts, even though the possible contributions of target location have not been considered. To investigate the effect of target location on orientation × color conjunction searches, the target’s duration and its position in the display were manipulated. The display was present either until observers responded (Experiment 1), for 104 msec (Experiment 2), or for 62 msec (Experiment 3). Target eccentricity critically affected performance: A pronounced eccentricity effect was very similar for all three experiments; as eccentricity increased, reaction times and errors increased gradually. Furthermore, the set-size effect became more pronounced as target eccentricity increased, and the extent of the eccentricity effect increased for larger set sizes. In addition, according to stepwise regressions, target eccentricity as well as its interaction with set size were good predictors of performance. We suggest that these findings could be explained by spatial-resolution and lateral-inhibition factors. The serial self-terminating hypothesis for orientation × color conjunction searches was evaluated and rejected. We compared the eccentricity effect as well as the extent of the orientation asymmetry in these three conjunction experiments with those found in feature experiments (Carrasco & Katz, 1992). The roles of eye movements, spatial resolution, and covert attention in the eccentricity effect, as well as their implications, are discussed. 相似文献
666.
This study examined the relative contributions of visual and verbal memory, metacognition about reading, and print exposure to reading comprehension among 100 Chinese fifth graders. The four concurrently measured componential skills were substantially associated with reading comprehension and reliably distinguished between good and poor readers. In a hierarchical regression, after controlling for the effects of verbal intelligence, both verbal and visual memory abilities predicted unique variance in reading comprehension. The distinctness of each memory skill underscores the existence of two unique memory processes in Chinese reading. Future research should examine the longitudinal contributions of these cognitive abilities to reading comprehension. 相似文献
667.
Previous research has shown that preferences for options, such as gambles, can reverse depending on the response mode. These preference reversals have been demonstrated when tasks were performed sequentially. That is, subjects completed one task before beginning another. In an attempt to eliminate preference reversals, we asked subjects to perform tasks simultaneously. That is, subjects made two types of responses for each pair of gambles before evaluating the next pair. In the condition with no financial incentives, preference reversal rates were slightly reduced. In another condition, subjects were paid for their participation and they were allowed to play a gamble with real monetary compensation. A gamble pair was randomly selected, and if a subject's responses in the two tasks were consistent for that pair, he or she was allowed to play the ‘preferred’ gamble. Otherwise, the experimenter selected the gamble from the pair. With these financial incentives, systematic preference reversals were eliminated for two of the three task combinations. Preference reversals continued to occur for attractiveness ratings versus selling prices, although, even for that pair of tasks, the reversal rate was significantly reduced. For all three task pairs, preference orders from the two tasks appeared to merge into more consistent orders. 相似文献
668.
Fenigstein, Scheier, and Buss's (1975) 3-factor model, Burnkrant and Page's (1984) 4-factor model, and Mittal and Balasubramanian's (1987) 5-factor model of the Self-Consciousness Scale (SCS) were tested using the revised SCS (Scheier & Carver, 1985b) on 2 convenience samples of 201 and 179 Chinese college students. Burnkrant and Page's (1984) 4-factor model showed superiority over the other 2 models in confirmatory factor analysis. It is concluded that the division of the private self-consciousness subscale is adequate, whereas the division of the public self-consciousness subscale is not justified. 相似文献
669.
Approximation,Idealization, and Laws of Nature 总被引:1,自引:0,他引:1
Traditional theories construe approximate truth or truthlikeness as a measure of closeness to facts, singular facts, and idealization
as an act of either assuming zero of otherwise very small differences from facts or imagining ideal conditions under which
scientific laws are either approximately true or will be so when the conditions are relaxed. I first explain the serious but
not insurmountable difficulties for the theories of approximation, and then argue that more serious and perhaps insurmountable
difficulties for the theory of idealization force us to sever its close tie to approximation. This leads to an appreciation
of lawlikeness as a measure of closeness to laws, which I argue is the real measure of idealization whose main purpose is
to carve nature at its joints.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
670.