全文获取类型
收费全文 | 52436篇 |
免费 | 2108篇 |
国内免费 | 16篇 |
专业分类
54560篇 |
出版年
2019年 | 603篇 |
2018年 | 793篇 |
2017年 | 775篇 |
2016年 | 876篇 |
2015年 | 630篇 |
2014年 | 778篇 |
2013年 | 3738篇 |
2012年 | 1448篇 |
2011年 | 1470篇 |
2010年 | 915篇 |
2009年 | 908篇 |
2008年 | 1317篇 |
2007年 | 1334篇 |
2006年 | 1194篇 |
2005年 | 1098篇 |
2004年 | 1073篇 |
2003年 | 971篇 |
2002年 | 986篇 |
2001年 | 1627篇 |
2000年 | 1621篇 |
1999年 | 1160篇 |
1998年 | 578篇 |
1997年 | 484篇 |
1996年 | 481篇 |
1992年 | 1074篇 |
1991年 | 1032篇 |
1990年 | 1052篇 |
1989年 | 936篇 |
1988年 | 923篇 |
1987年 | 861篇 |
1986年 | 910篇 |
1985年 | 991篇 |
1984年 | 749篇 |
1983年 | 720篇 |
1982年 | 510篇 |
1981年 | 487篇 |
1979年 | 892篇 |
1978年 | 615篇 |
1977年 | 550篇 |
1976年 | 537篇 |
1975年 | 760篇 |
1974年 | 868篇 |
1973年 | 928篇 |
1972年 | 795篇 |
1971年 | 742篇 |
1970年 | 705篇 |
1969年 | 719篇 |
1968年 | 947篇 |
1967年 | 856篇 |
1966年 | 765篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Lana M. Mahon Norma Neufeld Mani M. Mani Edward R. Christophersen 《Journal of applied behavior analysis》1984,17(3):391-396
The effect of informational feedback on the protein and caloric consumption of burn patients was investigated using a multiple-baseline across subjects. The patients were four severely burned adult males who failed to consume sufficient foods to achieve prescribed levels of protein or kilocalories via standard burn unit procedures during recovery. Feedback consisted of informing patients of (a) their prescribed levels of protein and kilocalories, (b) the protein and kilocalorie content of hospital foods and beverages, and (c) their actual intake of protein and kilocalories. Following the provision of feedback, there was an increase in protein and kilocalorie intakes and in the number of days during which prescribed levels for protein and kilocalories were achieved. These results suggest that the informational feedback was effective for improving the oral caloric intake of burn patients. 相似文献
952.
Bennett I. Bertenthal Dennis R. Proffitt James E. Cutting 《Journal of experimental child psychology》1984,37(2):213-230
Two experiments assessed infant sensitivity to figural coherence in point-light displays moving as if attached to the major joints of a walking person. Experiment 1 tested whether 3- and 5-month-old infants could discriminate between upright and inverted versions of the walker in both moving and static displays. Using an infant-control habituation paradigm, it was found that both ages discriminated the moving but not the static displays. Experiment 2 was designed to clarify whether or not structural invariants were extracted from these displays. The results revealed that (1) moving point-light displays with equivalent motions but different topographic relations were discriminated while (2) static versions were not, and (3) arrays that varied in the amount of motion present in different portions of the display were also not discriminated. These results are interpreted as indicating that young infants are sensitive to figural coherence in displays of biomechanical motion. 相似文献
953.
Anthony F. Badalamenti Ph.D. 《Journal of Contemporary Psychotherapy》1984,14(2):120-130
This paper develops an existential explanation for the position that different psychotherapeutic modalities enjoy comparable success rates. The explanation provides necessary and sufficient conditions for a successful outcome, related to the actualization level of both client and therapist, and is shown to imply equal theoretical probability of success across modalities. 相似文献
954.
The relative effectiveness of incentive and minimal justification techniques in promoting electrical energy conservation among 90 homeowners was investigated. Subjects in the Questionnaire condition were asked to complete a short energy conservation survey. Those in the Commitment condition were asked to curtail their consumption of electricity by 15%. In the Questionnaire + Commitment condition, subjects received both requests. These three groups were compared to an Incentive condition, where individuals were offered a highly attractive monetary incentive for conserving electricity, a Questionnaire + Commitment + Incentive condition, and a Control condition. The groups did not differ in electricity consumption during baseline, initial request, or follow-up periods. However, during the conservation period, homeowners in the Commitment and the combined treatment groups conserved more electricity and contained more conservers than either of the remaining groups. These outcomes were discussed in terms of the comparative effectiveness of minimal justification and incentive strategies for inducing behavioral change. 相似文献
955.
This study investigated the effect of television-mediated aggression and real-life aggression on the behavior of Lebanese children. The sample consisted of 48 boys and 48 girls of Lebanese origin who were students in an elementary school in Beirut, Lebanon. After controlling for pre-experimental aggression, the subjects were randomly assigned to one of the following treatment conditions: human-film aggression, cartoon-film aggression, neutral film, or real-life (act of war) aggression. The results indicated that boys as a group were more aggressive than girls and exhibited more imitative aggression after viewing both violent film and real-life violence. Girls were not more violent after viewing filmed aggression but were affected by the real-life violence. Comparisons of Bandura's work within the Lebanese culture are made. 相似文献
956.
Figure drawings obtained from 758 white male medical students were scored using three different methods. Method I involved 16 different physical size measurements; Method II involved six separate sophistication of body concept ratings; and Method III involved 42 separate aspects of the drawings weighted in direct proportion to their relative frequency of occurrence in the sample studied (conventionality scoring). Separate factor analyses of the scores derived from each method revealed that Methods I and II each reflect only a single underlying factor, and that these factors are uncorrelated in the population studied. Method III yielded eight meaningful factors, each of which may be construed as an independent area of conventionality/deviancy. An overall conventionality/deviancy score was also derived. It is believed that these three methods of scoring capture most of the variance inherent in existing figure drawing scoring systems, but that use of all three is necessary for a comprehensive analysis. 相似文献
957.
The purpose of the present study was to investigate the influence of race (black, white) on the MMPI performance of alcoholic and nonalcoholic inpatients. Subjects were 73 (27 black, 46 white) male alcoholic inpatients and 73 (27 black, 46 white) male nonalcoholic psychiatric inpatients. While black and white alcoholics failed to differ on the MMPI, white alcoholics presented as less disturbed and black alcoholics as less defensive and distressed, compared to their respective nonalcoholic counterparts. Furthermore, only white alcoholics were accurately identified by the MMPI 2-4/4-2 high-point pair combination and only white alcoholics achieved more high-point pairs containing Scale 4 relative to nonalcoholic controls. 相似文献
958.
A brief version of the Multiscore Depression Inventory was evaluated. Good coefficient alpha and test-retest reliabilities were obtained for the total score and the subscales. Two factor analyses were reported which appear to justify the use of a multiscore approach for at least 8 of the 9 subscales: helplessness, energy level, guilt, social introversion, cognitive difficulty, irritability, pessimism, and low self-esteem. Sad mood apparently overlapped with energy level on one analysis (replicating findings with the 118-item Multiscore Depression Inventory), and with self-esteem on the second analysis. Normative data are provided on diverse samples totaling 849 subjects. 相似文献
959.
R E Reichlin 《Journal of personality assessment》1984,48(1):71-81
Review of empirical studies of Rorschach performance by older adults (age 65+) indicates that previous research findings of declining cognitive flexibility and impoverishment of personality may be artifacts of design methodologies that have failed to adequately account for biosocial-psychological differences between age groups and within the older age group itself. When findings are assessed in terms of variables reflective of age cohort as well as residential status, diagnosis, health status, and test-taking attitude, important data become available. Suggestions concerning test interpretation are offered in lieu of the current lack of age matched base rates for Rorschach scoring variables. 相似文献
960.
The efficient assessment of need for cognition 总被引:35,自引:0,他引:35
A short form for assessing individual differences in need for cognition is described. 相似文献