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121.
Using an ecological model, this study explored the effects of distal and proximal sources of influence on students' learning. We first examined three markers of teacher qualification — elementary education credential, years of education, and years of experience — on observed classroom practices across three dimensions — warmth/responsivity, control/discipline, and time spent on academic activities — as they related to children's vocabulary and early reading skills. We then examined the impact of this core system embedded in a larger system that included children's vocabulary and word recognition skills prior to school entry, their home and preschool learning environments, and family SES. Results, using structural equation modeling, revealed that students whose teachers were more warm and responsive and who spent more time in academic activities demonstrated stronger vocabulary and decoding skills at the end of first grade. Teachers with more years of education interacted with students more responsively but, surprisingly, their students had weaker early reading skills. Overall, students' language and letter-word recognition scores when they were 54 months of age, their home learning environment and family SES accounted for most of the variability in vocabulary and early reading scores at the end of first grade. Implications of the multiple and concurrent sources of influence on students' language and literacy development are discussed.  相似文献   
122.
This study was designed to examine the effect of increasing age and type 2 diabetes on the average responses and inter- and intraindividual variability of falls risk, reaction time, strength, and walking speed for healthy older adults and older persons with type 2 diabetes (T2DM). Seventy-five older individuals (controls) and 75 persons with T2DM aged between 50 and 79 years participated in the study. Assessments of falls risk, reaction time (RT), knee extension strength, and walking speed were conducted. The results revealed that advancing age for both control and T2DM groups was reflected by a progressive increase in falls risk, decreased leg strength and a decline (i.e., slowing) of reactions and gait speed. Conversely, the level of intraindividual variability for the RT, strength and gait measures increased with increasing age for both groups, with T2DM persons tending to be more variable compared to the healthy controls of similar age. In contrast to the intraindividual changes, measures of interindividual variability revealed few differences between the healthy elderly and T2DM individuals. Taken together, the findings support the proposition that intraindividual variability of neuromotor measures may be useful as a biomarker for the early detection of decline in physiological function due to age or disease.  相似文献   
123.
A perplexing problem with Adams' (1963 ) equity theory has been the difficulty associated with operationalizing requisite components, perceived employee inputs, and outcomes. This study, involving 352 respondents, produced empirically derived, two-dimensional taxonomies of inputs and outcomes, laying the foundation for identification of key variables. Specifically, the study summarizes a typology of 9 distinct employee inputs perceived as controllable by individuals, including effort, education, attendance, and cooperativeness. Conversely, the study summarizes a typology of 14 distinct outcomes along a continuum of 4 dimensions, including personalized vs. generalized and economic vs. noneconomic characteristics. These typologies and incumbent regression analysis provide insight into the complexities associated with inputs and outcomes in the context of equity theory.  相似文献   
124.
Self-consciousness has been shown to both increase and decrease the magnitude of prime-to-behavior effects. In this paper, we decouple the facets of self-consciousness into internal state awareness and self-reflectiveness and show that self-consciousness can be associated with multiple influences on automatic behavior. Specifically, we conducted an experiment demonstrating that increased internal state awareness decreased the magnitude of the prime-to-behavior effect, whereas increased self-reflectiveness amplified the effect. These effects operated independently of self-monitoring and suggest a multiple process approach to understanding prime-to-behavior effects.  相似文献   
125.
The authors examined whether there were gender differences in the variability of basic gait parameters (stride length, stride time) and 3-dimensional (3D) rotations of the hip, knee, and ankle joints during treadmill locomotion of 18 men and 15 women at 4 different gait speeds (walking at 5 km/hr, running at 8, 10, and 12 km/hr). The authors used 2-way analyses of variance to assess the data. No gender differences in the mean values or variability of basic gait parameters were detected. However, the women exhibited lower variability than did the men for 6 individual joint rotations: (a) transverse plane rotations of the ankle joint at 8, 10, and 12 km/hr, (b) transverse plane rotations of the hip and knee joints at 12 km/hr, and (c) sagittal plane rotations of the ankle joint at 12 km/hr. When collapsed across all 3D lower extremity rotations, the data showed that the women had lower variability than did the men at 12 km/hr. Reduced variability may result in more localized mechanical stress on anatomical structures and could therefore be a risk factor for injury in women at high gait speeds. The results also suggested that gender differences in variability may not be consistent across different levels of the motor system.  相似文献   
126.
127.
This article investigates whether the prevalence of conservative churches, which has been associated with variation in demographic patterns in Western Europe ( Lesthaeghe and Neels 2002 ), can explain geographic differences in family demographic patterns—specifically fertility—in the U.S. nonblack population. Lesthaeghe and Neels find that a second demographic transition (SDT)—characterized by increasing prevalence of nontraditional family and household structure—is hindered by the presence of strong conservative religious institutions. The high religiosity of the United States compared with Western Europe makes it an interesting test case for the theory. This article analyzes the relationship between nonblack fertility and rates of membership in conservative Protestant and Latter Day Saint churches (conservative churches) among nonblacks in U.S. counties and shows that conservative church membership indeed is an independent factor in geographic differences in family demographic patterns—especially with regard to the timing of parenting, but less so with regard to nonmarital childbearing.  相似文献   
128.
Although current research indicates that psychotherapeutic change both affects and is affected by spiritual concerns, relatively little is known about the degree to which spirituality is used as an intervention in counseling and how it is perceived by clients and mental health professionals. The purpose of this study was to examine the perceptions of clients and professionals regarding the use of spirituality in counseling. The results suggest that more professionals may be using spirituality in counseling than has previously been reported.  相似文献   
129.
Word frequency is widely believed to affect object naming speed, despite several studies in which it has been reported that frequency effects may be redundant upon age of acquisition. We report, first, a reanalysis of data from the study by Oldfield and Wingfield (1965), which is standardly cited as evidence for a word frequency effect in object naming; then we report two new experiments. The reanalysis of Oldfield and Wingfield shows that age of acquisition is the major determinant of naming speed, and that frequency plays no independent role when its correlation with other variables is taken into account. In Experiment 1, age of acquisition and phoneme length proved to be the primary determinants of object naming speed. Frequency, prototypicality, and imageability had no independent effect. In Experiment 2, subjects classified objects into two semantic categories (natural or man-made). Prototypicality and semantic category were the only variables to have a significant effect on reaction time, with no effect of age of acquisition, frequency, imageability, or word length. We conclude that age of acquisition, not word frequency, affects the retrieval and/or execution of object names, not the process of object recognition. The locus of this effect is discussed, along with the possibility that words learned in early childhood may be more resistant to the effects of brain injury in at least some adult aphasics than words learned somewhat later.  相似文献   
130.
Processing of identity and position information was investigated in normal and disabled readers at two grade levels (third/fourth grade and sixth grade). Two partial-report tasks were used. The identity task consisted of visual presentation of a five-letter array, followed by a probe letter. Subjects responded yes for a match and no for a mismatch (identity response). The identity + position task was identical except that an additional response was required on correct yes trials: subjects reported the position of the probe letter in the array (position response). Both grade level and reading ability differences were found on the identity response measure, but not on the position response measure. Results were inconsistent with the hypothesis that disabled readers have difficulties in processing order information. Reader ability differences in identity processing attenuated somewhat with age. Serial position functions for both identity and position responses suggested the presence of a left-to-right scanning operation in both age and ability groups. Reader ability differences in processing letter identities were discussed in the context of current theories of reading acquisition.  相似文献   
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