全文获取类型
收费全文 | 400篇 |
免费 | 25篇 |
国内免费 | 1篇 |
专业分类
426篇 |
出版年
2022年 | 2篇 |
2021年 | 3篇 |
2020年 | 10篇 |
2019年 | 7篇 |
2018年 | 13篇 |
2017年 | 14篇 |
2016年 | 5篇 |
2015年 | 10篇 |
2014年 | 4篇 |
2013年 | 32篇 |
2012年 | 12篇 |
2011年 | 12篇 |
2010年 | 16篇 |
2009年 | 17篇 |
2008年 | 16篇 |
2007年 | 20篇 |
2006年 | 21篇 |
2005年 | 15篇 |
2004年 | 14篇 |
2003年 | 18篇 |
2002年 | 10篇 |
2001年 | 14篇 |
2000年 | 16篇 |
1999年 | 12篇 |
1998年 | 5篇 |
1997年 | 6篇 |
1996年 | 2篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1992年 | 7篇 |
1991年 | 9篇 |
1990年 | 5篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 3篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1978年 | 3篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1970年 | 2篇 |
1969年 | 3篇 |
1967年 | 3篇 |
1966年 | 2篇 |
1958年 | 2篇 |
排序方式: 共有426条查询结果,搜索用时 15 毫秒
71.
Overweight in youth is increasing and physical inactivity has been implicated as a causal factor. An after-school care intervention, Youth Fit For Life, has been associated with significant improvements in physiological factors and frequency of moderate-to-vigorous physical activity voluntarily completed outside of structured settings. Correlates of the observed changes in physical activity amounts were, however, unknown. A multiple regression equation with simultaneous entry of sex, age, race, initial Body Mass Index, and initial frequency of voluntary physical activity as predictor variables for changes in physical activity was calculated on Euro-American and African-American participants ages 8 to 12 years (N=217). A statistically significant 16% of the variance in changes in frequency of voluntary physical activity over 12 wk. was accounted for, with only voluntary physical activity at baseline and age making significant, unique contributions. For participants either overweight or at risk for overweight (n=72), the changes in physical activity significantly correlated with changes in Body Mass Index. Implications of findings to maximize treatment effects on voluntary physical activity were suggested. 相似文献
72.
Andrea Dixon Rayle Christine Chee Jennifer K. Sand 《Journal of multicultural counseling and development》2006,34(2):66-79
The authors review current literature on issues facing American Indian (AI) women and discuss implications for providing culturally sensitive counseling with these women. A case study of a Diné (Navajo) woman living within mainstream society and holding true to her traditional cultural beliefs illustrates how a culturally responsive approach to counseling AI women is integral for individual counseling with this population. Los autores revisan la literatura actual en asuntos afectando a mujeres Indias Americanas (AI) y discuten las implicaciones para proporcionar el aconsejar sensible culturalmente con estas mujeres. Un caso de una mujer Diné (navajo) que vive dentro de la sociedad convencional y mantiene válida a sus creencias culturales tradicionales que ilustra cómo un enfoque culturalmente receptivo a aconsejar mujeres Indias Americanas es integral para el aconsejo individual con esta población. 相似文献
73.
74.
Death is a bad thing by virtue of its ability to frustrate the subjectively valuable projects that shape our identities and
render our lives meaningful. While the presumption that immortality would necessarily result in boredom worse than death proves
unwarranted, if the constraint of mortality is a necessary element for virtues, relationships, and motivation to pursue our
life-projects, then death might nevertheless be a necessary evil. Mortal or immortal, it’s clear that the value of one’s life depends on its subjectively determined quality, rather
than its quantity. Thus, it is imperative to live forever in the present, with flourishing always in mind. 相似文献
75.
In an accompanying study, Alibali et al. [Alibali, M. W., Ockuly, K. M., Fischer, A. D. (2009) Learning new problem-solving strategies leads to changes in problem representation. Cognitive Development, 24, 89–101.] present an important experimental result: introducing a new strategy can affect conceptual aspects of children's problem representation. In this commentary, we briefly explore implications of this finding for theories of the development of mathematical cognition and of the development of cognitive structures, more generally. We argue that Alibali et al.’s results, taken in the context of previous findings, imply that children's actions during mathematical problem solving affect their subsequent understanding of the problem. We further suggest that results such as these may be best accommodated by reconceptualizing how cognitive structures achieve both stability and flexibility. 相似文献
76.
Chris Ninness Mark Dixon Dermot Barnes‐Holmes Ruth Anne Rehfeldt Robin Rumph Glen McCuller James Holland Ronald Smith Sharon K. Ninness Jennifer McGinty 《Journal of applied behavior analysis》2009,42(2):191-208
Participants were pretrained and tested on mutually entailed trigonometric relations and combinatorially entailed relations as they pertained to positive and negative forms of sine, cosine, secant, and cosecant. Experiment 1 focused on training and testing transformations of these mathematical functions in terms of amplitude and frequency followed by tests of novel relations. Experiment 2 addressed training in accordance with frames of coordination (same as) and frames of opposition (reciprocal of) followed by more tests of novel relations. All assessments of derived and novel formula‐to‐graph relations, including reciprocal functions with diversified amplitude and frequency transformations, indicated that all 4 participants demonstrated substantial improvement in their ability to identify increasingly complex trigonometric formula‐to‐graph relations pertaining to same as and reciprocal of to establish mathematically complex repertoires. 相似文献
77.
Summary Three experiments were conducted to investigate dual-code theory and the levels-of-processing approach in discourse processing. Three concrete and three abstract tests were constructed to be equivalent in the degree to which they were perceived as concrete vs. abstract. All experiments presented concrete and abstract texts under three orienting tasks. Results of the first experiment showed main effects for both text concreteness and orienting tasks and an interaction that can be described by the lack of a difference between the recall rates for the concrete and the abstract texts under the intentional-learning condition. In the second experiment, longer texts were used and a second trial was introduced. The interaction was not replicated. There were main effects for concreteness, orienting tasks, and trials. The third experiment replicated Experiment 2 with subjects in their late 40s and over 70. Main effects were obtained as before. Age interacted with both orienting task and concreteness, indicating that older adults gain less than middle-aged adults from intentional-learning instructions and benefit less from highly concrete texts. The discussion focuses on the relation of Materials and Subjects as factors to dual-code theory and levels of processing approach. 相似文献
78.
The original hypothesis of Dixon, Brunet, and Laurence (1990) that highly hypnotizable (HH) subjects process words more automatically than do low hypnotizable (LH) subjects was retested in a paradigm that separated strategic from automatic processes in the Stroop color-naming task. The words red and blue preceded a color patch that was red or blue. Subjects were told that the word predicted the opposite color 75% of the time. Automatic and strategic processes were assessed by varying the interstimulus interval (ISI) between the word and the color patch. Both HH and LH subjects showed significant strategic effects (faster incongruent-trial, color-naming reaction times than congruent-trial reaction times at ISIs over 400 ms), but only HH subjects showed significant automaticity (significantly faster congruent-trial reaction times than incongruent-trial reaction times at 16.7 ms, the lowest ISI). 相似文献
79.
Previous studies have described children’s acquisition of language as reflecting either a referential or an expressive style. A multivariate approach, characterizing “referentiality” and “expressivity” as partially dissociable dimensions, is advantageous because it allows children to vary along one dimension as they vary along another, allowing children to have high or low degrees of both characteristics simultaneously. The present study applies multivariate techniques to an “exploratory” sample of 87 children, all of whom were 20 months old, and by subsequently validating the exploratory phase with 56 of the original children seen one month later. Using parental reports to assess children’s multiword productions, exploratory factor analyses revealed two correlated dimensions of language style which indeed reflected referential and expressive characteristics. Confirmatory factor analyses “confirmed” these factors in the test sample. This two-dimensional model of language acquisition was superior to a unidimensional, general linguistic competence model. There is also strong short-term stability for both dimensions across the one-month period. 相似文献
80.
In a reanalysis of women's language, Holmes (1995) has argued that women's use of hedges expresses interpersonal warmth and not, as many researchers have maintained, linguistic tentativeness. It is typically men, she suggests, who employ hedges to convey imprecision and incertitude. In this study, we investigated the use of the hedges sort of and you know in a sample of South African students. Holmes's method of analysis was applied to hedging behavior in 52 dyadic conversations. The study consisted of a 2 (Speaker Gender: Male/Female) × 2 (Audience Gender: Male/Female) × 2 (Condition: Competitive/Noncompetitive) between-subjects experimental design. The results showed that contextual influences eclipsed the effects of gender; in fact, no main effects were found for speaker gender. Fewer hedges were deployed in the competitive condition than in the noncompetitive condition. Moreover, perhaps reflecting differences in social status, both sexes used sort of to express tentativeness more frequently when talking to male addressees. When speaking to female addressees, on the other hand, men deployed facilitative you know hedges more readily than women. 相似文献