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311.
Linking vitamin D status,executive functioning and self‐perceived mental health in adolescents through multivariate analysis: A randomized double‐blind placebo control trial 下载免费PDF全文
Bjørn Grung Asle M. Sandvik Kay Hjelle Lisbeth Dahl Livar Frøyland Irene Nygård Anita L. Hansen 《Scandinavian journal of psychology》2017,58(2):123-130
The aim of the present randomized double‐blind placebo control trial was to investigate if vitamin D supplementation had an effect on vitamin D status, executive functioning and self‐perceived mental health in a group of Norwegian adolescents during winter time. Fifty adolescents were randomly assigned into an intervention group (vitamin D pearls) or a control group (placebo pearls). Before (pre‐test in December/January) and after (post‐test in April/May) the intervention period the participants were exposed to a test procedure, consisting of blood draw, completion of cognitive tests (Tower of Hanoi and Tower of London), and the Youth Self‐report version of the Child Behavior Checklist. Multivariate data analysis showed that participants with low vitamin D status scored worse on the Tower of London tests and the more difficult sub‐tasks on the Tower of Hanoi tests. They also had a tendency to report higher frequency of externalizing behavior problems and attention deficit. At pre‐test, the overall mean vitamin D status measured as 25‐hydroxy vitamin D was 42 nmol/L, defining deficiency (Intervention group = 44 nmol/L, Control group = 39 nmol/L). However, vitamin D supplementation caused a significant increase in vitamin D status resulting in a sufficient level in the Intervention group at post‐test (mean 62 nmol/L). The results also revealed that the intervention group improved their performance on the most demanding sub‐tasks on the ToH. Overall, the study indicates that vitamin D status in adolescents may be important for both executive functioning and mental health. 相似文献
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Janice Kay Ruth Lesser 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1985,37(1):39-81
Investigation of a neurological patient (PT) who presents with a relatively pure disorder of reading was carried out. His performance on a number of oral reading tasks was very similar to that of the surface dyslexic patient (HTR) reported by Shallice, Warrington and McCarthy (1983). Both patients showed an effect of “degree” of regularity in terms of accuracy of reading response. PT did not, however, show an effect of “typicality of divergence”, which was considered by Shallice and his colleagues to be responsible for the former effect. The size of orthographic-phonological unit operational in PT's oral reading was experimentally determined. PT appeared to rely on grapheme-phoneme correspondences that were assigned in a probabilistic rather than an “all-or-none” manner. No evidence for the existence of the sub-syllable as an independent unit was found. In contrast, this unit apparently mediated the performance of skilled adult readers. Implications of these results for models of the phonological route are discussed. 相似文献
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Dr. Nicole S. Bell ScD MPH Thomas C. Harford PhD Paul J. Amoroso MD Ilyssa E. Hollander MPH Ashley B. Kay MSPH 《Suicide & life-threatening behavior》2010,40(4):407-415
Suicides among U.S. Army soldiers are increasing and, in January 2009, outpaced deaths due to combat. For this study, 1,873 army suicides identified through death, inpatient, and emergency room records were matched with 5,619 controls. In multivariate models, older, male, White, single, and enlisted soldiers with a prior injury (OR = 2.04, 95% CI = 1.64‐2.54), alcohol (OR = 3.41, 95% CI = 2.32‐4.99), or mental health hospitalization (OR = 6.62, 95% CI = 4.77‐9.20) were at increased risk for suicide. Risk was greatest immediately following diagnoses, but remained elevated even after 5 or more years of follow‐up. Most injury hospitalizations were unintentional but, nonetheless, significantly associated with suicide. Interactions indicate soldiers with both mental health and injury history are particularly vulnerable. 相似文献
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Abstract Reading comprehension skills are routinely taught and they are often learned to a point of “mastery” on criterion referenced tests; but students relatively seldom apply them effectively when they read content‐area materials. In this paper we argue that the problem can best be solved not by abandoning skill‐centered teaching but by discovering ways to help students make effective use of the skills they acquire through skill‐centered instruction. Our approach is to develop procedures for glossing expository text; that is, we are using marginal and other intratext notations‐‐gloss‐‐to direct students’ attention while they read in order to help them internalize, direct, and apply specific skills and strategies. We describe the purpose and rationale for our developmental approach and show how we are attempting to bring research implications to bear on our work. 相似文献