全文获取类型
收费全文 | 12224篇 |
免费 | 515篇 |
国内免费 | 6篇 |
出版年
2023年 | 71篇 |
2022年 | 61篇 |
2021年 | 123篇 |
2020年 | 218篇 |
2019年 | 255篇 |
2018年 | 339篇 |
2017年 | 312篇 |
2016年 | 373篇 |
2015年 | 248篇 |
2014年 | 342篇 |
2013年 | 1324篇 |
2012年 | 573篇 |
2011年 | 561篇 |
2010年 | 416篇 |
2009年 | 425篇 |
2008年 | 588篇 |
2007年 | 572篇 |
2006年 | 506篇 |
2005年 | 436篇 |
2004年 | 479篇 |
2003年 | 433篇 |
2002年 | 418篇 |
2001年 | 181篇 |
2000年 | 202篇 |
1999年 | 190篇 |
1998年 | 191篇 |
1997年 | 158篇 |
1996年 | 112篇 |
1995年 | 148篇 |
1994年 | 147篇 |
1993年 | 133篇 |
1992年 | 131篇 |
1991年 | 113篇 |
1990年 | 112篇 |
1989年 | 109篇 |
1988年 | 116篇 |
1987年 | 110篇 |
1986年 | 86篇 |
1985年 | 103篇 |
1984年 | 118篇 |
1983年 | 99篇 |
1982年 | 110篇 |
1981年 | 115篇 |
1980年 | 104篇 |
1979年 | 105篇 |
1978年 | 112篇 |
1977年 | 90篇 |
1976年 | 93篇 |
1975年 | 65篇 |
1974年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
251.
Dr. David M. Fergusson L. John Horwood Michael T. Lynskey 《Journal of abnormal child psychology》1994,22(3):339-354
The correlations and comorbidities of a series of adolescent problem behaviors were studied in a sample of 739 New Zealand 15-year-olds. This analysis revealed the presence of strong comorbidities between different problem behaviors. The data were modeled using methods of unrestricted latent class analysis and this suggested that the best fitting model to describe the data was one which assumed that adolescent problem behaviors were described by four general classes of children. While the same general four-class model applied to males and females, there were marked gender differences in the rates of problems. Specifically, the predominant problem behaviors in females were those relating to an accelerated transition to adulthood marked by early sexual activity, alcohol abuse, and cannabis use whereas the predominant problems for boys were related to antisocial and law-breaking behaviors. Rates of children with no problems (85%) and with multiple problems (3%) were similar for boys and girls.This research was funded by grants from the Health Research Council of New Zealand, the Canterbury Medical Research Foundation, and the National Child Health Research Foundation. 相似文献
252.
253.
Michael E. Brady 《国际科学哲学研究》1994,8(2):99-112
It is shown that J. M. Keynes was the originator of what is called a weighted monetary value (WMV) approach to decision making under uncertainty and risk as opposed to either the expected monetary value (EMV) or subjective expected utility (SEU) approaches. 相似文献
254.
David Michael Levin 《Human Studies》1994,17(3):343-353
This and the following papers were presented at a symposium organized by David M. Levin honoring the work of Eugene Gendlin at meetings of the Society for Phenomenology and the Human Sciences, Boston, October, 1992. 相似文献
255.
This research was an investigation into four challenges purported to confront cross-sex friends. One hundred and thirty eight individuals (females = 86, males = 52) completed two surveys designed to explore the extent to which the sexual, emotional bond, audience, and equality challenges were present in their cross-sex friendships. Over 98% of the participants were heterosexual, 99% were Caucasian, and approximately 5% were Hispanic. Data gathered from the first survey were analyzed using a three-way analysis of variance, with gender, type of friendship, and romantic status as the independent variables, and three of the four challenges as the dependent variables. The first survey also included open-ended questions designed to explore the nature and existence of the challenges. The second survey was in a diary format. Respondents kept a frequency count for three weeks of discussions they had with their cross-sex friend concerning the challenges, and thoughts that they had as individuals concerning those challenges. Results from both surveys indicate that though the challenges exist and have powerful effects on a small percentage of individuals in cross-sex friendships, for the majority of participants the challenges are not perceived as salient. 相似文献
256.
Abrams RA 《Journal of motor behavior》1994,26(3):215-224
Subjects produced speeded and unspeeded hand movements to a target location after either saccadic or pursuit eye movements to the target. Hand movements began either aligned with the initial position of gaze or from some other location. Subjects generally underestimated the extent of the pursuit eye movements relative to estimates made after saccades. With speeded hand movements, however, the underestimation was reduced considerably if the hand movements began aligned with a location other than the initial position of gaze. The results reveal details of the mechanisms underlying eye-hand coordination and show that important differences exist in the information used for localization for slow and rapid limb movements. 相似文献
257.
Kevin J. Miller Barbara S. McCrady David B. Abrams Erich W. Labouvie 《Journal of psychopathology and behavioral assessment》1994,16(2):111-120
The present study reports on a clinical instrument designed for assessing self-efficacy in alcoholics. In contrast to studies that construct general measures, it was proposed that taking an individualized approach to assessment might offer an effective methodology. Thirty-four alcoholics in an outpatient, behaviorally oriented treatment program participated as subjects. During therapy, an Individualized Self-Efficacy Survey (ISS) was developed for each subject. The ISS was developed by (a) administering the Drinking Patterns Questionnaire (DPQ) to identify important problem areas (e.g., work, children, marital) and specific drinking antecedents and (b) constructing a 15-item scale using each drinker's most important cues. The utility of having clients choose their own items was supported by finding a significant relationship between problem areas identified as important on the DPQ and the areas reported as surrounding relapse. ISS ratings were reflective of efficacy changes during treatment, while posttreatment ISS scores were predictive of subsequent relapse. Situation-specific prediction of relapse was not found. The advantages of this methodology for clinical use are discussed, while general directions for future research are suggested. 相似文献
258.
Amy E. Kerr Michael J. Patton Richard T. Lapan Hope I. Hills 《Journal of counseling and development : JCD》1994,73(2):204-210
Researchers investigated the relationship between measures of interpersonal behavior and narcissism. Eight octant measures of interpersonal behavior were constructed, and validity and reliability estimates were obtained. High school and junior high school students (N = 333) completed five measures of narcissistic vulnerability, eight octant measures of interpersonal behavior, and a measure of social desirability. Canonical correlational analysis indicated a specific pattern of interpersonal behaviors for individuals with differing levels and types of narcissistic vulnerability. A multivariate analysis of variance (MANOVA) indicated that scores on several of the scales were found to differ significantly by sex and by treatment for emotional, behavioral, or educational difficulties. Implications for counseling are considered. 相似文献
259.
Michael Huberman 《Knowledge, Technology, and Policy》1994,7(4):13-33
As a field of study, “research utilization” is at a turning point. Despite an accumulation of replicable findings, robust
constructs, even a “soft technology” for bridging the gap between theory and practice, we are still largely in the situation
of the distance between social problems of, let us say, conflict or inequality and the ability of social science to provide
credible, reliable and usable solutions. At the same time, the initial paradigms, suffering from hyperrationalism, have given
way to more transactional ones, and have been shaken by the tenets of postmodernism. Shaken, but not undone, as “middle-level”
constructs emerge, ones that appear to link the research community with a variety of professional communities in more meaningful
and durable ways.
Michael Huberman has been Visiting Professor of Education at Harvard University since 1991, where he teaches research methodologies
and conducts research on knowledge dissemination. He is also Senior Research Associate at the Network, Inc. 相似文献
260.