全文获取类型
收费全文 | 6460篇 |
免费 | 220篇 |
国内免费 | 4篇 |
出版年
2022年 | 42篇 |
2021年 | 59篇 |
2020年 | 103篇 |
2019年 | 129篇 |
2018年 | 151篇 |
2017年 | 196篇 |
2016年 | 181篇 |
2015年 | 139篇 |
2014年 | 197篇 |
2013年 | 725篇 |
2012年 | 296篇 |
2011年 | 297篇 |
2010年 | 176篇 |
2009年 | 178篇 |
2008年 | 239篇 |
2007年 | 276篇 |
2006年 | 253篇 |
2005年 | 211篇 |
2004年 | 235篇 |
2003年 | 212篇 |
2002年 | 160篇 |
2001年 | 104篇 |
2000年 | 99篇 |
1999年 | 120篇 |
1998年 | 98篇 |
1997年 | 70篇 |
1996年 | 58篇 |
1995年 | 65篇 |
1994年 | 68篇 |
1993年 | 69篇 |
1992年 | 67篇 |
1991年 | 50篇 |
1990年 | 64篇 |
1989年 | 41篇 |
1988年 | 61篇 |
1987年 | 55篇 |
1986年 | 64篇 |
1985年 | 75篇 |
1984年 | 82篇 |
1983年 | 73篇 |
1982年 | 72篇 |
1981年 | 74篇 |
1980年 | 62篇 |
1979年 | 65篇 |
1978年 | 69篇 |
1977年 | 48篇 |
1976年 | 62篇 |
1975年 | 54篇 |
1974年 | 60篇 |
1973年 | 45篇 |
排序方式: 共有6684条查询结果,搜索用时 15 毫秒
131.
Barbara Henker Carol K. Whalen Robin O'Neil 《Journal of abnormal child psychology》1995,23(6):685-702
Top-of-the-head worries were elicited from young people, grades 4 to 8, both before and after they completed quantitative risk assessments of specific health and environmental problems. Results revealed that many students carry a substantial worry burden that includes not only personal matters such as grades and social relations, but also concerns about death and about global issues such as homelessness and environmental degradation. The gender and grade differences that emerged were consistent with a developmental extension from self to societal perspectives. Differences in worry profiles from before to after the risk assessment interviews revealed some impact of recent exposure, as illustrated by a pre—post increase from 7% to 30% in students spontaneously expressing AIDS-related concerns. Implications of the breadth and severity of young people's concerns are discussed, as are the ambiguities inherent in standard assessment approaches.This research was supported by grants from the National Institute of Child Health and Human Development (HD27035) and the University of California Universitywide AIDS Research Program (R901040). We very much appreciate the cooperation of Sally Snyder and the Irvine Unified School District, Amy Watson and the Corinne A. Seeds University Elementary School, Trina Panaqua and the Bruin Kids of UCLA, and the Fernald Child Study Center. Special thanks are due to the 4th- through 8th-grade student participants. We are also grateful to Ellen Dellis, Virginia Elderkin-Thompson, Judy Hollingshead, Alison Holman, Judy Koch-Jones, and Kim Witte for their help with the interviews and to Tammy Merlo, Shealen Nash, and Beth Twambley for competent coding assistance. Finally, we thank the anonymous editorial reviewers for constructive comments on the nature of fear and worry. 相似文献
132.
IMPLICIT MEMORY IN AMNESIC PATIENTS: 总被引:1,自引:0,他引:1
Abstract— Amnesic patients generally exhibit spared priming effects on implicit memory tasks despite poor explicit memory In a previous study, we demonstrated normal auditory priming in amnesic patients on an identification-in-noise test in which the magnitude of priming is independent of whether the speaker's voice is the same or different at study and test In the present experiment, we examined auditory priming on a filter identification test in which the magnitude of priming in control subjects is higher when the speaker's voice is the same at study and test than when it is different Amnesic patients, by contrast, failed to exhibit more priming in a same-voice condition than in a different-voice condition Voice-specific priming may depend on a memory system that is impaired in amnesia 相似文献
133.
Barbara Tversky 《Applied cognitive psychology》1995,9(5):451-452
134.
PREVENTION OF DEPRESSIVE SYMPTOMS IN SCHOOLCHILDREN: 总被引:2,自引:0,他引:2
Jane E. Gillham Karen J. Reivich Lisa H. Jaycox Martin E.P. Seligman 《Psychological science》1995,6(6):343-351
Abstract— After teaching cognitive and social-problem-solving techniques designed to prevent depressive symptoms, we followed 69 fifth- and sixth-grade children at risk for depression for 2 years. We compared these children with 49 children in a matched no-treatment control group The prevention group re- ported fewer depressive symptoms through the 2-year follow-up, and moderate to severe symptoms were reduced by half. Surprisingly, the effects of the prevention program grew larger after the program was over. We suggest that psychological immunization against depression can occur by leaching cognitive and social skills to children as they enter puberty 相似文献
135.
136.
Barbara E. Acker Richard E. Pastore Michael D. Hall 《Attention, perception & psychophysics》1995,57(6):863-874
Recent speech research has begun to evaluate the internal structure of categories. In one such study, Kuhl (1991) found that discrimination was poorer for vowel stimuli that were more representative of the category (prototype, or P, set) than it was for less representative stimuli (nonprototype, or NP, set). This finding was interpreted as indicating that a category prototype may function as a “perceptual magnet,” effectively decreasing perceptual distance, and thus discriminability, between stimuli. The present study examines the function of prototypes in a musical category—another natural, but nonspeech category. Paralleling the Kuhl study, representative (P) and less representative (NP) sets of major triad stimuli were constructed, based on equal temperament. Musically experienced subjects rated the stimuli in each set for goodness as a major triad, with the highest rated stimulus serving as a prototype standard for a subsequent discrimination task. Results from the discrimination task demonstrated better performance in the P context than in the NP context. The current nonspeech results indicate that a prototype functions as an anchor rather than a magnet. In addition to providing a natural, nonspeech standard for comparison with speech findings, the results provide some important insights into the nature of musical categories. 相似文献
137.
Griffin Barbara Skinner James E. Wolf Stewart Strohman Richard C. 《Integrative psychological & behavioral science》1995,30(3):250-259
Integrative Psychological and Behavioral Science - 相似文献
138.
Student’s ability to read computer text was investigated by comparing reading performance on decoding and phonetics tests of the Woodcock-Johnson (Revised) Tests of Achievement, Forms A and B. Fifty-one students completed one form of the reading tests through the traditional administration method and a second form using computer administration. Initial form and administration order were counterbalanced. Coefficients of equivalence of .91 and .86 were obtained for traditional and computer administration methods of the two tests. The results are interpreted as indicating that computer-administered reading tests can assess the same domains as traditional measures, and that they may become increasingly important in the complete assessment of functional reading skills. 相似文献
139.
Christopher S. Martin Ph.D. Mitchell Earleywine Timothy C. Blackson Michael M. Vanyukov Howard B. Moss Ralph E. Tarter 《Journal of abnormal child psychology》1994,22(2):177-203
Aggressivity, inattention, hyperactivity, and impulsivity are cardinal dimensions of externalizing behavior problems of childhood. They are diagnostic and clinical features of childhood disorders, and are thought to be linked to the subsequent development of adult disorders such as substance abuse (SA). Little is known, however, about the convergent and discriminant validity of these four constructs. We used multiple measures to develop indices of aggressivity, inattention, hyperactivity, and impulsivity in a sample of 10- to 12-year-old boys (N=183) with and without a family history of SA. Data were taken from mother reports, child reports, teacher reports, and laboratory tasks. The study aims were (1) to test the convergent and discriminant validity of aggressivity, inattention, hyperactivity, and impulsivity; (2) to examine whether the data were consistent with a model specifying the four constructs as indicators of one superordinate factor; and (3) to differentiate boys with and without a family history of SA in construct scores. The results supported the convergent and discriminant validity of the four constructs. Although discriminable, the constructs covaried strongly and were consistent with a model specifying them as indicators of a single superordinate factor. Boys with a family history of substance abuse scored higher than control boys on aggressivity, inattention, and impulsivity scores, but the groups did not differ on hyperactivity scores. The results are discussed in terms of the role of childhood behavior problems in vulnerability to SA.This work was supported by the National Institute on Drug Abuse grant No. DA 05605. 相似文献
140.
Enhancing possible selves in Mexican American students 总被引:3,自引:0,他引:3
Day Jeanne D. Borkowski John G. Punzo Diana Howsepian Barbara 《Motivation and emotion》1994,18(1):79-103
This project assessed the modifiability of possible selves in young Mexican American children. Three intervention conditions were compared in a pre- and posttest design: child-only intervention, parent and child intervention, and a no-intervention control. Following eight intervention sessions, children in the two intervention groups showed significant gains in understanding the characteristics associated with becoming a good student and in recognizing the value of education in bringing about future occupational goals. Children in the intervention conditions also reported greater interest in becoming a physician, judge, or pilot — occupations they had directly experienced during training. The parent intervention phase contributed little to augmenting the positive results attributable to the child intervention component.This research was conducted under the auspices of NIH Grant HD-24003. We wish to thank Maritza Robles and the staff of the Bilingual program of the South Bend, IN, Corporation for their support. 相似文献