全文获取类型
收费全文 | 3917篇 |
免费 | 171篇 |
国内免费 | 1篇 |
出版年
2023年 | 26篇 |
2022年 | 26篇 |
2021年 | 43篇 |
2020年 | 62篇 |
2019年 | 77篇 |
2018年 | 122篇 |
2017年 | 121篇 |
2016年 | 166篇 |
2015年 | 96篇 |
2014年 | 123篇 |
2013年 | 460篇 |
2012年 | 210篇 |
2011年 | 217篇 |
2010年 | 127篇 |
2009年 | 112篇 |
2008年 | 181篇 |
2007年 | 161篇 |
2006年 | 138篇 |
2005年 | 125篇 |
2004年 | 142篇 |
2003年 | 137篇 |
2002年 | 100篇 |
2001年 | 87篇 |
2000年 | 85篇 |
1999年 | 50篇 |
1998年 | 52篇 |
1997年 | 51篇 |
1996年 | 46篇 |
1995年 | 45篇 |
1994年 | 35篇 |
1993年 | 36篇 |
1992年 | 46篇 |
1991年 | 38篇 |
1990年 | 53篇 |
1989年 | 35篇 |
1988年 | 44篇 |
1987年 | 27篇 |
1986年 | 30篇 |
1985年 | 32篇 |
1984年 | 33篇 |
1983年 | 24篇 |
1982年 | 28篇 |
1981年 | 13篇 |
1979年 | 26篇 |
1978年 | 15篇 |
1977年 | 18篇 |
1974年 | 20篇 |
1972年 | 14篇 |
1970年 | 14篇 |
1968年 | 12篇 |
排序方式: 共有4089条查询结果,搜索用时 15 毫秒
941.
942.
Task switching requires the ability to flexibly switch between task rules and responses, and is sensitive to developmental change. We tested the hypothesis that developmental changes in task switch performance are associated with changes in the facilitating or interfering effect of the previously retrieved stimulus-response (S-R) association. Three age groups (7-8-year-olds, 10-12-year-olds and 20-25-year-olds) performed a two-choice reaction time (RT) task in which spatially compatible or incompatible responses were required. The RT costs associated with switching between tasks were larger when responses were repeated than when responses were alternated. Younger children showed a greater cost than adults when switching between tasks but repeating responses. This age difference decreased when the interval between the previous response and the upcoming stimulus increased. Switch costs were larger when switching to the compatible task than to the incompatible task, but this effect did not differ between age groups. These findings suggest that young children build up stronger transient associations between task sets and response sets, which interfere with their ability to switch to currently intended actions. A similar pattern has previously been observed for older adults (Mayr, 2001), suggesting a common contributor to task switching deficits across the life span. 相似文献
943.
Laboratory research has revealed considerable systematic variability in the degree to which individuals' alertness and performance are affected by sleep deprivation. However, little is known about whether or not different populations exhibit similar levels of individual variability. In the present study, we examined individual variability in performance impairment due to sleep loss in a highly select population of militaryjet pilots. Ten active-duty F-117 pilots were deprived of sleep for 38 h and studied repeatedly in a high-fidelity flight simulator. Data were analyzed with a mixed-model ANOVA to quantify individual variability. Statistically significant, systematic individual differences in the effects of sleep deprivation were observed, even when baseline differences were accounted for. The findings suggest that highly select populations may exhibit individual differences in vulnerability to performance impairment from sleep loss just as the general population does. Thus, the scientific and operational communities' reliance on group data as opposed to individual data may entail substantial misestimation of the impact of job-related stressors on safety and performance. 相似文献
944.
945.
Hermans D Van den Broeck K Belis G Raes F Pieters G Eelen P 《Behaviour research and therapy》2004,42(7):775-789
Research on autobiographical memory has shown that clinical depression is associated with a difficulty in retrieving specific autobiographical memories in response to cue words. This study examined the relation between lack of autobiographical memory specificity and self-reported trauma in a group of depressed adults (N = 23). In addition to the Autobiographical Memory Test (AMT; Williams & Broadbent, 1986) participants completed a number of questionnaires assessing the presence of traumatic experiences in the past, level of depression and neuroticism. The number of specific responses was not related to depression severity, but was significantly associated with the presence and severity of reported physical abuse. Participants who had been victim of physical abuse were less specific than participants who had not been confronted with such physical adversities. The results are discussed in the context of a functional hypothesis about the developmental relations between memory specificity, trauma and depression. 相似文献
946.
Inhibition and shifting in children with learning deficits in arithmetic and reading 总被引:7,自引:0,他引:7
van der Sluis S de Jong PF van der Leij A 《Journal of experimental child psychology》2004,87(3):239-266
The executive functions of inhibition and shifting were studied in arithmetic-disabled children, reading-disabled children, reading plus arithmetic-disabled children, and controls (N = 74). Measures involved the rapid naming of objects, digits, letters, or quantities with or without additional task requirements that reflected inhibition or shifting. Also, the Making Trails task, reflecting shifting, was administered. For tasks without executive demands, arithmetic-disabled children were slower in the naming of digits and quantities, whereas reading-disabled children were slower in the naming of digits and letters. For the executive tasks, arithmetic-disabled children as well as reading plus arithmetic-disabled children were impaired on the Making Trails task and on an object naming task that required both inhibition and shifting. Reading-disabled children exhibited no problems in executive functioning. Furthermore, it was shown that reading plus arithmetic-disabled children experienced the combination of problems that characterize children with a single learning deficit. 相似文献
947.
The present research investigates whether Openness to Experience and Boundaries in the mind are related to conservatism. In the first study, significant relationships between several scales of the Boundaries in the mind questionnaire and indicators of conservative beliefs were obtained in an adult sample (N=78) as well as in a sample of political party activists (N=44). In the second study, these negative relationships between conservatism and thin boundaries were replicated in an adult sample (N=225). Moreover, two dimensions representing Boundaries in the mind were identified, one positively related to Openness to Experience and negatively to conservatism and the second showing high positive correlations with Neuroticism. The exceptionally strong correlations between conservatism and the Boundaries in the mind facet scales Opinions about organizations, Opinions about beauty, truth, Edges, lines, clothing and Opinions about peoples, nations, groups are discussed, as well as the weak relationships between economic conservatism and Openness to Experience. 相似文献
948.
949.
To address the question of whether memories from early childhood survive into later childhood, participants visited the laboratory at age 3 and again at 7, 8, or 9. At age 3, each talked with a parent about six events; at the later age each child talked with a researcher about four of these distant events as well as two more recent events. School-aged children recalled fewer than half of the distant events introduced. Further, the proportion of distant events recalled was negatively correlated with age. Those distant events that were recalled, however, were recounted in an accurate, detailed manner. Importantly, reports of distant events did not reflect the full extent of children's narrative ability. Reports of recent events were more coherent and included twice the detail. Implications for existing interpretations of autobiographical memory and childhood amnesia are discussed, and the need for further research employing innovative methods is emphasised. 相似文献
950.
Van Berkum JJ Brown CM Zwitserlood P Kooijman V Hagoort P 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(3):443-467
The authors examined whether people can use their knowledge of the wider discourse rapidly enough to anticipate specific upcoming words as a sentence is unfolding. In an event-related brain potential (ERP) experiment, subjects heard Dutch stories that supported the prediction of a specific noun. To probe whether this noun was anticipated at a preceding indefinite article, stories were continued with a gender-marked adjective whose suffix mismatched the upcoming noun's syntactic gender. Prediction-inconsistent adjectives elicited a differential ERP effect, which disappeared in a no-discourse control experiment. Furthermore, in self-paced reading, prediction-inconsistent adjectives slowed readers down before the noun. These findings suggest that people can indeed predict upcoming words in fluent discourse and, moreover, that these predicted words can immediately begin to participate in incremental parsing operations. 相似文献