全文获取类型
收费全文 | 41710篇 |
免费 | 1549篇 |
国内免费 | 27篇 |
专业分类
43286篇 |
出版年
2020年 | 482篇 |
2019年 | 558篇 |
2018年 | 723篇 |
2017年 | 746篇 |
2016年 | 823篇 |
2015年 | 622篇 |
2014年 | 739篇 |
2013年 | 3634篇 |
2012年 | 1296篇 |
2011年 | 1382篇 |
2010年 | 855篇 |
2009年 | 893篇 |
2008年 | 1241篇 |
2007年 | 1178篇 |
2006年 | 1125篇 |
2005年 | 1042篇 |
2004年 | 971篇 |
2003年 | 1004篇 |
2002年 | 1021篇 |
2001年 | 1001篇 |
2000年 | 953篇 |
1999年 | 738篇 |
1998年 | 460篇 |
1997年 | 457篇 |
1996年 | 429篇 |
1992年 | 639篇 |
1991年 | 647篇 |
1990年 | 630篇 |
1989年 | 604篇 |
1988年 | 520篇 |
1987年 | 563篇 |
1986年 | 603篇 |
1985年 | 666篇 |
1984年 | 588篇 |
1983年 | 529篇 |
1982年 | 425篇 |
1981年 | 474篇 |
1979年 | 573篇 |
1978年 | 451篇 |
1977年 | 414篇 |
1975年 | 522篇 |
1974年 | 586篇 |
1973年 | 586篇 |
1972年 | 483篇 |
1971年 | 469篇 |
1970年 | 441篇 |
1969年 | 456篇 |
1968年 | 541篇 |
1967年 | 537篇 |
1966年 | 500篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
261.
The expansion of mental health services during the 1960s from a single remote mental hospital to centers and clinics in mainstream communities fostered the development of community psychology in Hong Kong. Few psychologists were initially involved in the local community mental health movement, but its momentum resulted in increasing numbers of practitioner psychologists working in community-based service settings. Community psychology in Hong Kong today consists primarily of service delivery, but also includes applied research, community organization/consultation, and community education. Despite having many parallels with the American situation, key concepts underpinning the practice of community psychology in the Territory possess their own character as a reflection of nuances in the local scene. Prospects for the continued development of community psychology in Hong Kong appear favorable. Of special relevance is the field's potential contribution to a better understanding of the psychological phenomena associated with the Territory's sociopolitical transformation in 1997. 相似文献
262.
A neuroscience model of stuttering 总被引:2,自引:0,他引:2
H.B. Nudelman K.E. Herbrich B.D. Hoyt D.B. Rosenfield 《Journal of Fluency Disorders》1989,14(6):399-427
Using motor control systems analysis and a reductionist approach, we provide a unified model of stuttering. This model views stuttering as a momentary instability in a complex multiloop control system. The model predicts the temporal conditions under which this instability will occur. Furthermore, these temporal conditions account for the efficacy of fluency-evoking maneuvers, therapy, and the variability of speech output in stutterers. 相似文献
263.
This study evaluated the Children's Firesetting Interview (CFI). The measure was developed to operationalize multiple domains of functioning derived from a riskfactor model of firesetting. The model poses that child, parent, and family characteristics promote firesetting and continuation of a pattern of firesetting. Major factors include curiosity about fire, involvement in and exposure to firerelated activities, and knowledge about first safety The CFI, consisting of 46 questions reflecting six a prioridimensions, was administered to 519 children (ages 6–13) recruited from nonpatient, outpatient, and inpatient samples. Internal consistency and testretest reliability of the measure were satisfactory. Criterion validity was supported by the findings that firesetters showed greater curiosity about fire, involvement in firerelated activities, exposure to models/materials, and knowledge about things that burn than did nonfiresetters. These findings did not vary as a function of the child's patient status or level of antisocial behavior. Implications for the evaluation of firesetting risk are discussed.This study was supported by grant MH-39976 from the Antisocial and Violent Behavior Branch of the National Institute of Mental Health and by a Research Scientist Development Award (MH00353) from the National Institute of Mental Health. The authors acknowledge the constructive suggestions of two anonymous reviewers. 相似文献
264.
Two groups of singers (n = 12,13) and a group of nonsingers (n = 12) each produced the national anthem by (1) speaking and (2) singing the words and by (3) humming the melody. Regional cerebral blood flow (rCBF) was measured at rest and during each phonation task from seven areas in each hemisphere by the 133Xe-inhalation method. Intrahemisphere, interhemisphere, and global rCBF were generally similar across phonation tasks and did not yield appreciable differences among the nonsingers and the singers. 相似文献
265.
Two alternative hypotheses were considered concerning the process of prolonged search for an uncommon word in response to hearing its definition. One alternative is that a conscious retrieval effort brings the target progressively closer to threshold. The second is that the retrieval process is a random neural exploration outside of conscious control. A tachistoscopic probe was devised to compare word recognition thresholds after 10 sec versus 30 sec of presumed search time. Results failed to show a difference between the two delay conditions and were interpreted as inconsistent with the first alternative but consistent with the second. 相似文献
266.
Neuropsychological functioning in hemiparkinsonism 总被引:3,自引:0,他引:3
A standardized neuropsychological battery including measures of intellectual cognitive, memory, attention-concentration, language, abstraction and mental flexibility, and sensory and motor functions was administered to 21 hemiparkinsonian patients (14 with right side and 7 with left side symptoms) and 17 controls matched for age and education. Patients were impaired in all functions except sensory. For motor functions, impairment was ipsilateral to the side of symptoms. For cognitive functions, right side symptoms were associated with verbal deficits whereas left side symptoms were associated with spatial deficits. Thus, a pattern of neuropsychological deficits consistent with the lateralization of motor symptoms may appear in the early stages of the disease. 相似文献
267.
268.
Little research has been conducted on the university admissions interview, and with increasing selection ratios there has been a tendency for universities to dispense with interviews altogether. This paper argues for a re-assertion of the interview as a valuable component of the admissions procedure, not necessarily to improve institutional decision-making but for the guidance and personal decision-making of candidates. The rationale for treating admissions interviews as opportunities for counselling are reviewed, and the advantages for both candidates and institutions are outlined. 相似文献
269.
The central question concerns the relationship between aspects of behaviour and physiological reactions. Measures of sympathetic-adrenal activity in terms of adrenaline excretion in a normal and a stressful situation as well as teacher ratings of behaviour were analysed for a representative group of 86 boys aged 13. Adrenaline excretion was in both situations significantly negatively related to ratings of aggressiveness, motor restlessness, and concentration difficulties and also to the sum of the latter two, used as an indicator of hyperactive behaviour. The association between hyperactive behaviour and adrenaline excretion persisted in the stressful situation when aggressiveness was controlled, whereas there was no significant relationship between aggressiveness and adrenaline output when hyperactive behaviour was controlled. Furthermore, hyperactive boys differed significantly from non-hyperactive boys in displaying lower adrenaline excretion in both situations. The results are discussed in terms of low sympathetic-adrenal reactivity to external demands as a risk factor and as a possible indicator of vulnerability for social and/or pervasive conduct disturbances. 相似文献
270.
In order to guarantee that each individual is free to pursue his/her potential, each member of AACD is charged to (a) engage in ongoing examination of his/her own attitudes, feelings, stereotypic views, perceptions and behaviors that might have prejudicial or limiting impact on women, ethnic, minorities, elderly persons, gay/lesbian persons and persons with handicapping conditions; (b) contribute to an increased sensitivity on the part of other individuals, groups or institutions to the barriers to opportunity imposed by discrimination; (c) advocate equal rights for all individuals through concerted personal, professional and political activity. (Position paper of the Human Rights Committee of the American Association for Counseling and Development, 1987, p.1) 相似文献