全文获取类型
收费全文 | 34742篇 |
免费 | 1393篇 |
国内免费 | 8篇 |
出版年
2020年 | 335篇 |
2019年 | 465篇 |
2018年 | 602篇 |
2017年 | 640篇 |
2016年 | 624篇 |
2015年 | 440篇 |
2014年 | 578篇 |
2013年 | 2578篇 |
2012年 | 1036篇 |
2011年 | 1122篇 |
2010年 | 670篇 |
2009年 | 659篇 |
2008年 | 978篇 |
2007年 | 957篇 |
2006年 | 902篇 |
2005年 | 810篇 |
2004年 | 802篇 |
2003年 | 733篇 |
2002年 | 766篇 |
2001年 | 1056篇 |
2000年 | 966篇 |
1999年 | 745篇 |
1998年 | 413篇 |
1997年 | 338篇 |
1996年 | 336篇 |
1992年 | 570篇 |
1991年 | 573篇 |
1990年 | 548篇 |
1989年 | 566篇 |
1988年 | 553篇 |
1987年 | 509篇 |
1986年 | 540篇 |
1985年 | 607篇 |
1984年 | 484篇 |
1983年 | 467篇 |
1982年 | 378篇 |
1981年 | 370篇 |
1979年 | 552篇 |
1978年 | 399篇 |
1976年 | 374篇 |
1975年 | 447篇 |
1974年 | 493篇 |
1973年 | 521篇 |
1972年 | 414篇 |
1971年 | 386篇 |
1970年 | 387篇 |
1969年 | 410篇 |
1968年 | 494篇 |
1967年 | 427篇 |
1966年 | 428篇 |
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
961.
962.
963.
This study examined the effects of children's need for approval (nApp) and a situational variable-frequency of expectancy statements-on children's achievement cognitions and behaviour. We replicated the Dweck and Gilliard (1975) paradigm, but also mea sured children's nApp. Ninety fifth grade boys and girls stated expectancies either prior to each trial, prior to the first and last trials, or prior to the last trial only. We found that although high and low nApp children lowered their expectancies after failure, high nApp children lowered them less than low nApp children. In contrast, persistence was influenced only by the frequency of expectancy statements and not by children's nApp. The results are discussed in the context of the interactional point of view in personality psychology. 相似文献
964.
George A. Clum Ph.D. Patti Lou Watkins Janet W. Borden Susan E. Broyles John Hayes 《Journal of Rational-Emotive & Cognitive-Behavior Therapy》1993,11(4):179-193
The present study evaluated the efficacy of a new intervention, Guided Imaginal Coping (GIC), compared to imaginal exposure (IEX), and a waiting-list control (WLC) condition among 24 clinic outpatients meeting DSM-III-R criteria for panic disorder (PD) or PD with agoraphobia. GIC was the more consistently effective intervention, with individuals demonstrating significant improvement in frequency and severity of panic attacks (Pas) as well as significant reductions in physiological and subjective arousal to provocative imagery. Individuals in the IEX intervention demonstrated less consistent improvement on the dependent measures, while individuals in the WLC condition essentially remained unchanged. Both GIC and IEX were effective according to a composite measure of clinically significant improvement. However, only GIC was superior to the WLC condition when clinical improvement was defined as zero PAs at follow-up. These findings, while preliminary, suggest that GIC can be added to the armamentarium of effective approaches to treating PD. 相似文献
965.
Ronald C. Martella Ph.D. Ian J. Leonard B.S. Nancy E. Marchand-Martella Ph.D. Martin Agran Ph.D. 《Journal of Behavioral Education》1993,3(1):77-86
We examined the effects of a self-monitoring program on reducing the frequency of negative statements of a student with mild mental retardation who was enrolled in a self-contained classroom at a middle school. A changing criterion design was used within a multiple baseline design across two classroom periods. Additionally, the frequency of positive statements was reported. The results showed a decrease in the number of negative statements, and an increase in the number of positive statements. Maintenance data collected up to 8 weeks after the program ended indicated that the student continued to emit positive rather than negative statements. The use of this procedure to decelerate undesirable behavior is discussed. 相似文献
966.
Predictive testing for Huntington disease is presently offered in a select few medical genetics centers in the United States. This is in part due to the labor intensive counseling and psychological testing suggested by the research protocols. We discuss some specific suggestions for establishing programs for Huntington disease predictive testing within pre-existing medical genetics clinics to encourage more centers to offer presymptomatic testing. This will allow more at risk individuals the opportunity to consider predictive testing and cut down the expenses of traveling to the few predictive testing centers that currently exist. The counseling principals will remain similar to those discussed here, even following the identification of the Huntington disease mutation. 相似文献
967.
Scott W. Henggeler Ph.D. Gary B. Melton Ph.D. Linda A. Smith B.A. Sonja K. Schoenwald M.A. Jerome H. Hanley Ph.D. 《Journal of child and family studies》1993,2(4):283-293
In a randomized clinical trial, multisystemic family preservation was shown to significantly reduce rates of criminal activity and incarceration in a sample of 84 serious juvenile offenders and their multi-need families. In the current study, archival records were searched for re-arrest an average of 2.4 years post-referral. Survival analysis showed that youths who received multisystemic family preservation were less likely to be re-arrested than were youths who had received usual services. Such results represent the first controlled demonstration that family preservation, when delivered via a clearly specified treatment model, has lasting effects with serious juvenile offenders. Implications for family preservation and juvenile justice research are discussed. 相似文献
968.
Carol Z. Garrison Ph.D. Cheryl L. Addy Ph.D. Robert E. McKeown Ph.D. Steven P. Cuffe M.D. Kirby L. Jackson A.B. Jennifer L. Waller Ph.D. 《Journal of child and family studies》1993,2(4):339-352
To determine the frequency and correlates of nonsuicidal physically self-damaging acts in 12–14 year olds, a two stage epidemiologic survey with a self-administered questionnaire (N=3283) followed by a psychiatric interview of a subsample of the adolescents and their parents (N=444) was used. Prevalence estimates of interview validated nonsuicidal physically self-damaging acts were 2.46% in males and 2.79% in females. Significant relationships were found between nonsuicidal physically self-damaging acts and suicidal ideation, major depression and undesirable life events. Data suggest that physically self-damaging acts occur at substantial rates during early adolescence. The strong correlation between nonsuicidal self-destructive acts and both suicidal ideation and major depression clarifies prior conflicting reports in the literature and suggests that a history of self-damaging acts should be taken into consideration when evaluating for possible depression and suicide risk. 相似文献
969.
There is a growing concern for quality care in residential placements outside of the natural family for children and youth with developmental disabilities. Ideally, children with developmental disabilities should remain with their natural parent or parents of parents with appropriate supports until the age when children typically leave home. In reality, parents of children and youth with development disabilities are not always able or willing to care for their children at home, and alternate residential placements must be found. This paper will discuss some of the issues surrounding the provision of quality care in out-of-home residential placements for children and youth with developmental disabilities. 相似文献
970.
Irwin Silverman Susan E. Dickens Marion Eals Judith Fine 《Infant and child development》1993,2(3):135-144
This study emanated from the long-standing question of whether a maternal bonding process similar to other mammalian species occurs in humans. The perceptions of adult adoptees and a matched sample of non-adoptees about their parents' behaviours towards them were compared on an original Parental Solicitude Scale. As hypothesized, birth children perceived their mothers as the more solicitous parent, but ratings of adoptive mothers showed a unilateral decline. Further, the differential ratings for birth and adoptive mothers occurred mostly for the factors labelled benignity vs abuse and tolerance vs control, rather than caretaking vs neglect, which was congruent to reported effects in prior studies of lack of mother-infant contact during the sensitive period for bonding. An alternative explanation of the data was also tested but not substantiated. 相似文献