全文获取类型
收费全文 | 2119篇 |
免费 | 115篇 |
专业分类
2234篇 |
出版年
2024年 | 9篇 |
2023年 | 29篇 |
2022年 | 17篇 |
2021年 | 26篇 |
2020年 | 57篇 |
2019年 | 66篇 |
2018年 | 81篇 |
2017年 | 83篇 |
2016年 | 99篇 |
2015年 | 54篇 |
2014年 | 63篇 |
2013年 | 288篇 |
2012年 | 107篇 |
2011年 | 128篇 |
2010年 | 65篇 |
2009年 | 87篇 |
2008年 | 89篇 |
2007年 | 99篇 |
2006年 | 74篇 |
2005年 | 71篇 |
2004年 | 53篇 |
2003年 | 64篇 |
2002年 | 56篇 |
2001年 | 26篇 |
2000年 | 37篇 |
1999年 | 17篇 |
1998年 | 23篇 |
1997年 | 12篇 |
1996年 | 21篇 |
1995年 | 12篇 |
1994年 | 12篇 |
1993年 | 10篇 |
1992年 | 17篇 |
1991年 | 9篇 |
1990年 | 19篇 |
1989年 | 18篇 |
1988年 | 15篇 |
1987年 | 15篇 |
1986年 | 12篇 |
1985年 | 16篇 |
1984年 | 18篇 |
1983年 | 9篇 |
1982年 | 9篇 |
1981年 | 8篇 |
1980年 | 8篇 |
1978年 | 8篇 |
1976年 | 8篇 |
1973年 | 11篇 |
1959年 | 7篇 |
1951年 | 8篇 |
排序方式: 共有2234条查询结果,搜索用时 15 毫秒
1.
Leigh M. Riby Timothy J. Perfect Brian T. Stollery 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2004,57(2):241-267
Previous research demonstrates that older adults are poor at dual tasking, but there is less agreement on whether their decrement is worse than that predicted from single-task performance. This study investigated whether task domain moderates dual-task costs in old age. In two experiments, young and older adults retrieved either previously learned associates (episodic retrieval) or overlearned category members (semantic retrieval) under single or working-memory load conditions, using cued recall (Experiment 1) and recognition (Experiment 2) procedures. In both experiments the proportional costs of dual tasking were age invariant for semantic retrieval but were particularly marked for episodic retrieval, although the size of the age effect was reduced in recognition compared to cued recall. The data suggest that age effects in dual tasking may be domain specific. 相似文献
2.
3.
4.
Richard Rogers J. Roy Gillis Susan E. Dickens Christopher D. Webster 《Behavioral sciences & the law》1988,6(4):487-495
Clinical judgments on the treatability and prognosis of mentally disordered offeenders (MDO) may strongly influence legal dispositions and the availability of treatment resources. This study examined 1,238 discharge summaries for MDOs referred for court assessments. Psychiatrists evidenced marked variability in how often they recommended treatment and how frequently they judged patients to have a poor prognosis. Two logit analyses suggested that diagnosis and consultation by other clinicians were associated with (a) treatment recommendations (i.e., Axis I diagnosis and social work consultations) and (b) prognosis (i.e., Axis II diagnosis and psychology consultations). 相似文献
5.
6.
7.
Annabel J. Cohen Sandra E. Trehub Leigh A. Thorpe 《Attention, perception & psychophysics》1989,46(1):18-28
In three experiments, musically trained and untrained adults listened to three repetitions of a 5-note melodic sequence followed by a final melody with either the same tune as those preceding it or differing in one position by one semitone. In Experiment 1, ability to recognize the final sequence was examined as a function of redundancy at the levels of musical structurein a sequence, contour complexity of transpositions in a trial, and trial context in a session. Within a sequence, tones were related as the major or augmented triad; within a trial, the four sequences began on successively higher notes (simple macrocontour) or on randomly selected notes (complex macrocontour); and within a session, trials were either blocked (all major or all augmented) or mixed (major and augmented randomly selected). Performance was superior for major melodies, for systematic transpositions within a trial (simple macrocontours), for blocked trials, and for musically trained listeners. In Experiment 2, we examined further the effect of macrocontour. Performance on simple macrocontours exceeded that on complex, and excluded the possibility that repetition of the 20-note sequences provided the entire benefit of systematic transposition in Experiment 1. The effect of musical structure (major/augmented) was also replicated. In Experiment 3, listeners provided structure ratings of ascending 20-note sequences fromExperiment 2. Ratings onsame trials were higher than those on correspondingdifferent trials, in contrast to performance scores for augmentedsame anddifferent trials in previous experiments. The concept of functional uncertainty was proposed to account for recognition difficulties on augmented same trials. The significant effects of redundancy on all the levels examined confirm the utility of the information-processing framework for thestudy of melodic sequence perception. 相似文献
8.
9.
In two experiments, we investigated the factors that influence the perceived similarity of speech sounds at two developmental levels. Kindergartners and second graders were asked to classify nonsense words, which were related by syllable and phoneme correspondences. The results support the existence of a developmental trend toward increased attention to individual phonemic segments. Moreover, one significant factor in determining the perceived similarity of speech sounds appears to be the position of the component correspondences; attention to the beginning of utterances may have developmental priority. An unexpected finding was that the linguistic status of the unit involved in a correspondence (whether it was a syllable or a phoneme) did not seem particularly important. Apparently, the factors which contribute to the perceived similarity of speech sounds in the classification task are not identical to those which underlie performance in explicit segmentation and manipulation tasks, since in the latter sort of task, syllables are more accessible than phonemes for young children. The present task may tap a level of processing that is closer to the one entailed in word recognition and lexical access. 相似文献
10.
Alcoholism and suicide 总被引:5,自引:0,他引:5