全文获取类型
收费全文 | 1241篇 |
免费 | 109篇 |
出版年
2024年 | 6篇 |
2023年 | 25篇 |
2022年 | 21篇 |
2021年 | 38篇 |
2020年 | 75篇 |
2019年 | 61篇 |
2018年 | 78篇 |
2017年 | 77篇 |
2016年 | 80篇 |
2015年 | 64篇 |
2014年 | 42篇 |
2013年 | 149篇 |
2012年 | 84篇 |
2011年 | 89篇 |
2010年 | 56篇 |
2009年 | 35篇 |
2008年 | 62篇 |
2007年 | 54篇 |
2006年 | 51篇 |
2005年 | 42篇 |
2004年 | 28篇 |
2003年 | 27篇 |
2002年 | 16篇 |
2001年 | 12篇 |
2000年 | 9篇 |
1999年 | 4篇 |
1998年 | 9篇 |
1997年 | 6篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 5篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 5篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1968年 | 2篇 |
1964年 | 2篇 |
1961年 | 1篇 |
1954年 | 1篇 |
排序方式: 共有1350条查询结果,搜索用时 15 毫秒
981.
982.
983.
Cathy A. Alessi John F. Schnelle Nahla Al-Samarrai Emily Farkas Patrice A. Cruise Joseph G. Ouslander 《Journal of Clinical Geropsychology》2000,6(4):315-323
A standardized method of assessing daytime drowsiness in frail nursing home residents has not been previously available. We present here the development and test characteristics of an instrument to measure daytime drowsiness in nursing home residents with cognitive and functional impairment, the Multiple Sleep Latency Test-Nursing Home (MSLT-NH). In a standardized manner, the resident is tested three times in one day (at 9 a.m., 11 a.m., and 1 p.m.) to measure the amount of time until the subject falls asleep. The average sleep latency (minutes to fall asleep) is the measure of interest. We tested the MSLT-NH in 95 residents from six community nursing homes in the Los Angeles area (82% of subjects were female; 81% were white, mean age was 86.6 years and mean score on the Mini-Mental State Examination [MMSE] was 9.4). Interrater reliability of the MSLT-NH was quite good (correlations between raters ranged from 0.98 to 0.99; all p values were <.0001). Validity was assessed by comparing MSLT-NH results to simultaneous wrist activity estimation of sleep, and by comparing MSLT-NH findings to results from nighttime sleep estimation by wrist actigraphy the night prior to MSLT-NH. The percent agreement between MSLT-NH and wrist actigraph ranged from 77% to 79% MSLT-NH results were significantly associated with peak duration of nighttime sleep episodes the night prior to testing. The MSLT-NH was also quite acceptable for use in the NH setting. In conclusion, we have developed a promising measure of daytime drowsiness in NH residents. Further testing will help establish whether this test is a clinically useful measure of daytime drowsiness from medications or other conditions in the NH setting. 相似文献
984.
Using a multiple probe design across responses, we demonstrated the effectiveness of intensive intervention in establishing spontaneous verbal responses to 2 3-year-old children with autism with generalization to novel settings involving novel persons. Intervention involved discrete-trial instruction (i.e., repeated instructional opportunities presented in close proximity to high rates of reinforcement), specific prompts, and error correction. Spontaneous responses were defined as specific verbal utterances (e.g., the child says "bless you") following discriminative stimuli that did not involve explicit vocal directives (e.g., adult sneeze). The development of effective interventions to address the social-communicative needs of very young children with autism is discussed. 相似文献
985.
Geetha B. Ramani Emily N. Daubert Grace C. Lin Snigdha Kamarsu Alaina Wodzinski Susanne M. Jaeggi 《Developmental science》2020,23(4)
Sources that contribute to variation in mathematical achievement include both numerical knowledge and general underlying cognitive processing abilities. The current study tested the benefits of tablet‐based training games that targeted each of these areas for improving the mathematical knowledge of kindergarten‐age children. We hypothesized that playing a number‐based game targeting numerical magnitude knowledge would improve children's broader numerical skills. We also hypothesized that the benefits of playing a working memory (WM) game would transfer to children's numerical knowledge given its important underlying role in mathematics achievement. Kindergarteners from diverse backgrounds (n = 148; 52% girls; Mage = 71.87 months) were randomly assigned to either play a number‐based game, a WM game, or a control game on a tablet for 10 sessions. Structural equation modeling was used to model children's learning gains in mathematics and WM across time. Overall, our results suggest that playing the number game improved kindergarten children's numerical knowledge at the latent level, and these improvements remained stable as assessed 1 month later. However, children in the WM group did not improve their numerical knowledge compared to children in the control condition. Playing both the number game and WM game improved children's WM at the latent level. Importantly, the WM group continued to improve their WM for at least a month after playing the games. The results demonstrate that computerized games that target both domain‐specific and domain‐general skills can benefit a broad range of kindergarten‐aged children. 相似文献
986.
There is evidence that spatial thinking is malleable, and that spatial and mathematical skills are associated (Mix et al. [2016] Journal of Experimental Psychology: General, 145, 1206; Mix et al. [2017] Journal of Cognition and Development, 18, 465; Uttal et al. [2013] Psychological Bulletin, 139, 352). However, few studies have investigated transfer of spatial training gains to mathematics outcomes in children, and no known studies have compared different modes of spatial instruction (explicit vs. implicit instruction). Based on a sample of 250 participants, this study compared the effectiveness of explicit and implicit spatial instruction in eliciting near transfer (to the specific spatial skills trained), intermediate transfer (to untrained spatial skills) and far transfer (to mathematics domains) at age 8. Spatial scaling and mental rotation skills were chosen as training targets as previous studies have found, and proposed explanations for, associations between these skills and mathematics in children of this age (Journal of Experimental Psychology: General, 145, 2016 and 1206). In this study, spatial training led to near, intermediate and far transfer of gains. Mental visualization and proportional reasoning were proposed to explain far transfer from mental rotation and spatial scaling skills respectively. For most outcomes, except for geometry, there was no difference in the effectiveness of implicit (practice with feedback) compared to explicit instruction (instructional videos). From a theoretical perspective, the study identified a specific causal effect of spatial skills on mathematics skills in children. Practically, the results also highlight the potential of instructional videos as a method of introducing spatial thinking into the classroom. 相似文献
987.
Science and Engineering Ethics - This paper presents an experimental approach for engaging undergraduate STEM students in anticipatory ethical reasoning, or ethical reasoning applied to the... 相似文献
988.
Katherine B. Martin John D. Haltigan Naomi Ekas Emily B. Prince Daniel S. Messinger 《Developmental science》2020,23(5)
Although difficulties with social relationships are key to autism spectrum disorder (ASD), no previous study has examined infant attachment security prior to ASD diagnosis. We prospectively assessed attachment security at 15 months in high‐risk infants with later ASD (high‐risk/ASD, n = 16), high‐risk infants without later ASD (high‐risk/no‐ASD, n = 40), and low‐risk infants without later ASD (low‐risk/no‐ASD, n = 39) using the Strange Situation Procedure. High‐risk/ASD infants were disproportionately more likely to be classified as insecure (versus secure) and more likely to be classified as insecure‐resistant (versus secure or avoidant) than high‐risk/no‐ASD and low‐risk/no‐ASD infants. High‐risk infants with insecure‐resistant attachments were over nine times more likely to receive an ASD diagnosis than high‐risk infants with secure attachments. Insecure‐resistant attachment in high‐risk infants suggests a propensity toward negative affect with the parent in conditions of stress. Insecure‐resistant attachment may prove useful as a potential early index of propensity toward ASD diagnosis in high‐risk siblings, while insecure‐resistant attachment in the context of emergent autism may contribute to difficulties experienced by children with ASD and their families. 相似文献
989.
Emily Hachey 《European Journal of Developmental Psychology》2020,17(5):761-772
ABSTRACT Children at ages 7 (N = 24, M age = 6.96, SD age =.20), 9 (N = 29, M age = 8.76, SD age =.44), and 11 (N = 25, M age = 10.76, SD age =.66), and adults (N = 30) made judgements about the obligation to help when it conflicts with a personal desire. Across ages, the obligation to help was judged to be strongest when there were positive or neutral past interactions with the person in need of help, compared to mean past interactions. Expectation of a future friendship predicted the obligation to help, even after controlling for age and sex. However, we found no effect of children helping gender in-group members more. Evidence for altruism was not found: expected positive emotions did not predict the obligation to help. We conclude that an expectation of future relationship is the strongest predictor of helping obligation. 相似文献
990.
Emily Siegler Carly Stafford Yi Zhou Bradley T. Erford Stephanie A. Crockett 《Journal of Employment Counseling》2020,57(4):178-189
Articles published in the Journal of Employment Counseling from 2000 to 2019 were analyzed for trends over time related to author characteristics (i.e., domicile, gender, work setting, and leading contributors and institutions) and article content (i.e., typology, topical issues, research methodology, characteristics of participants, research design, statistics used, report of effect size and sample reliability and validity). 相似文献