首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3807篇
  免费   320篇
  国内免费   163篇
  2024年   7篇
  2023年   120篇
  2022年   96篇
  2021年   119篇
  2020年   181篇
  2019年   247篇
  2018年   246篇
  2017年   222篇
  2016年   201篇
  2015年   104篇
  2014年   207篇
  2013年   759篇
  2012年   73篇
  2011年   128篇
  2010年   127篇
  2009年   130篇
  2008年   142篇
  2007年   204篇
  2006年   134篇
  2005年   133篇
  2004年   123篇
  2003年   97篇
  2002年   100篇
  2001年   69篇
  2000年   51篇
  1999年   47篇
  1998年   41篇
  1997年   34篇
  1996年   27篇
  1995年   20篇
  1994年   8篇
  1993年   13篇
  1992年   9篇
  1991年   6篇
  1990年   8篇
  1989年   6篇
  1988年   6篇
  1987年   9篇
  1986年   8篇
  1985年   5篇
  1984年   8篇
  1982年   3篇
  1981年   4篇
  1980年   5篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
排序方式: 共有4290条查询结果,搜索用时 15 毫秒
881.
Structural equation modeling was used to test a theoretical model in which family cohesion and family reframing coping were hypothesized as mediators between family drinking problems, multiple risk factors, negative life events, and child mental health (conduct disorder, depression, anxiety) in two-parent families. Family cohesion mediated the relationships of family drinking problems and negative life events to child conduct disorder and depression. Negative life events mediated the relationships of family drinking problems and family multiple risk to child conduct disorder. Family reframing coping did not function as a mediator nor was it related to child mental health when other factors were considered simultaneously. Results indicate that increasing family cohesion and reducing sources of stress within the family (negative life events) represent promising areas for interventions for children with problem-drinking parents. Work on this study was funded in part by the National Institute for Mental Health Grant 2-P50-MH39246-06 to support a Preventive Intervention Research Center. The authors gratefully acknowledge contributions made by Rita Shell, Marcia Michaels, Joanne Gersten, George Knight, and Carolyn Berg.  相似文献   
882.
This study examines the degree to which mothers perceive infants as intentional and the relations among perception of intentionality, background variables, maternal emotional adjustment, and maternal interactive style. Forty mother-infant dyads were assessed when the infants were 4 months old, and 34 were retested at 8 months. Parent perception of infant intentionality (PPII) was measured via a rating of videotaped segments of infant behavior and an interview. Intentionality scores showed acceptable internal consistency and were positively intercorrelated at each age and across age. The two measures were aggregated to form an index of PPII at each age. Higher educational attainment was associated with lower PPII scores, experience with infants was associated with higher PPII scores, and academic knowledge about child development was not related to PPII. Mothers with more symptoms of anxiety had lower PPII scores, but high maternal separation anxiety was associated with higher PPII scores. Maternal symptoms of depression had a complex relation to PPII scores. Mothers rated as sensitive in mother-infant interactions had higher PPII scores. These variables accounted for 34% of the variance in PPII at 4 months and 49% at 8 months. There were also group differences: Mothers of 8-month-olds had higher PPII scores than mothers of 4-month-olds, mothers of girls had higher PPII scores than mothers of boys, and mothers attributed more intentionality in episodes with girls than in episodes with boys. The results are discussed in relation to mechanisms whereby PPII interacts with aspects of the parent and infant.  相似文献   
883.
Thirty-eight adults were assigned to three groups: posttreatment hyperthyroid (n=13), low euthyroid (n=12), and high euthyroid (n=13). Physiological and subjective responses to three anxiety-induction procedures—public speaking, personally distressing imagery, and threat of shock—were compared across groups. Although there were differences across stressors for physiological and subjective measures, group differences were not detected. Results are discussed with regard to the risk for residual anxiety following treatment for hyperthyroidism and the possible influence of thyroid function on the etiology or maintenance of anxiety.  相似文献   
884.
The aim of this article is to review and evaluate behavioral and physiological measurement techniques frequently used to assess dental anxiety and fear in children. Attention is given to the data collected, the empirical findings obtained, and the availability of normative data. The main focus, however, is on the reliability and validity. Results show that all questionnaires are open to criticism. Of the behavioral measures, Melamed's Behavior Profile Rating Scale is to be preferred to Frankl's Rating Scale, Venham Rating Scales, and Visual Analogue Scales. The main reasons are that Melamed's BPRS measures the behavior of the child more precisely and that it has superior psychometric properties. Furthermore, because of their practical, conceptual, and psychometric problems, physiological measures at this stage are found to be less appropriate for assessing dental fear in children. It is concluded that a behavioral measure is not always the ideal, but often the only available technique for assessing dental fear in children.  相似文献   
885.
Interrater reliability of eight teacher rating scales designed to assess characteristics of attention-deficit hyperactivity disorder was investigated. Coteachers of 46 students completed the rating scales. The students, ages 8–17, were designated as having a Serious Emotional Disturbance. The resulting interrater reliability correlation coefficients ranged from .62 to .87. The percentage of variance shared between raters ranged from a low of 38.4% (the ACTeRS Oppositional factor and the CBCL-TRF Attention Problems factor) to 75.7% (ADHD Rating Scale). The percent of shared variance was higher for younger children. Kappa scores evaluating rater agreement were highest at the two standard deviations above the mean cutoff. The reliability coefficients were consistent with those reported in prior research.  相似文献   
886.
The validity of conceptualizing trichotillomania (TCM) and obsessive-compulsive disorder (OCD) as separate and distinct diagnoses was examined in a study of 20 patients with each disorder. A comparison of demographic, psychometric, and clinical features between the two groups revealed a number of statistically significant differences. Patients meeting the criteria for OCD scored higher on measures of psychiatric symptomatology including ratings of obsessions and compulsions, depression, interpersonal sensitivity, general anxiety, phobic anxiety, and psychoticism. Patients meeting the criteria for TCM reported an earlier age at onset than those with OCD. Stressors associated with onset were also significantly different between groups. These results support the validity of conceptualizing TCM and OCD as differing behavioral disorders.Portions of this paper were presented at the annual meeting of the Anxiety Disorders Association of America (March 1992) in Dallas, TX, and at the annual meeting of the American Psychiatric Association (May 1992) in Washington, DC.  相似文献   
887.
The present study investigated the self-reported prevalence of attention-deficit hyperactivity disorder (ADHD)symptoms in 770 college students using the Adult Rating Scale and the Wender Utah Rating Scale. Psychometric properties of these scales were explored. The study also investigated the performance of students with ADHD symptoms, relative to students without ADHD symptoms, on a battery of neuropsychological tasks. Results revealed that 7 and 8% of the students reported significant symptoms (i.e., 1.5 SD above the mean) on the Adult Rating Scale and the Wender Utah Rating scale, respectively, and 2.5% reported significant symptoms on both the Adult Rating Scale and the Wender Utah Rating Scale. Using more stringent criteria (two standard deviations), fewer (i.e, 4, 3.8%, and 0.5%) subjects reported significant symptoms associated with ADHD. Between-group differences were found on one of the neuropsychological tasks. The construct validity of the rating scales was supported. Limitations and implications for future research are advanced.Presented at the International Neuropsychological Society's Sixteenth European Conference, Angers, France, June 1994, and the Annual Convention of the American Psychological Association, Los Angeles, CA, August 1994.  相似文献   
888.
Increasing self-control for students with severe disabilities is an important step toward normalization. The classroom is one setting in which opportunities for self-control can be created. The effects of teacher-control versus student-control over academic task and reinforcement selection were evaluated for three 11-to 13-year-old males with severe behavior problems. Under student-control conditions students were able to select rewards and tasks from lists generated by the teacher; in the teacher-control conditions, the teacher selected rewards and tasks but attempted to make similar selections to those made by the students. An alternating treatments design was implemented. In Phase 1, task completion was the target behavior; in Phase 2 task accuracy was the target behavior. Task performance improved when the student, rather than the teacher, had control over task assignments and choice of reinforcement. While either student control of reinforcement or student control of task assignment resulted in higher performance than did teacher-control, the most effective instructional situation was the two procedures combined. This effect was apparent even when students and teachers selected the same tasks and the same reinforcers. Implications for increasing student-control over some classroom decisions are discussed.deceased.  相似文献   
889.
This report aims to look at whether the results of a community survey of the prevalence of panic attacks and panic disorder could be influenced by a possible sex difference in the willingness to return screening questionnaires and to acknowledge psychiatric symptoms. The results suggest that men are less likely to return questionnaires, and that this effect is more marked in the younger age groups. This could indicate that an important group of people is being under-represented in prevalence figures for panic and possibly other psychiatric diagnoses.  相似文献   
890.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号