全文获取类型
收费全文 | 31316篇 |
免费 | 1009篇 |
国内免费 | 15篇 |
出版年
2019年 | 299篇 |
2018年 | 407篇 |
2017年 | 422篇 |
2016年 | 463篇 |
2015年 | 363篇 |
2014年 | 406篇 |
2013年 | 2319篇 |
2012年 | 794篇 |
2011年 | 810篇 |
2010年 | 488篇 |
2009年 | 515篇 |
2008年 | 739篇 |
2007年 | 692篇 |
2006年 | 610篇 |
2005年 | 598篇 |
2004年 | 566篇 |
2003年 | 553篇 |
2002年 | 583篇 |
2001年 | 871篇 |
2000年 | 853篇 |
1999年 | 601篇 |
1998年 | 299篇 |
1992年 | 571篇 |
1991年 | 556篇 |
1990年 | 564篇 |
1989年 | 539篇 |
1988年 | 483篇 |
1987年 | 501篇 |
1986年 | 545篇 |
1985年 | 584篇 |
1984年 | 496篇 |
1983年 | 451篇 |
1982年 | 312篇 |
1981年 | 364篇 |
1980年 | 293篇 |
1979年 | 529篇 |
1978年 | 388篇 |
1977年 | 350篇 |
1976年 | 321篇 |
1975年 | 473篇 |
1974年 | 543篇 |
1973年 | 570篇 |
1972年 | 473篇 |
1971年 | 463篇 |
1970年 | 452篇 |
1969年 | 468篇 |
1968年 | 585篇 |
1967年 | 545篇 |
1966年 | 530篇 |
1958年 | 305篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
912.
913.
914.
When subjects attempt to fake psychopathology on the MMPI, scores on subtle subscales tend to be lower than those of nonfaking subjects. Our study hypothesized that this paradox comes about because the subtle subscales have no predictive validity, but their face validity for psychopathology is the opposite of the keyed direction for psychopathology. Subjects who attempt to fake psychopathology do so on the basis of item content and thus achieve lower rather than higher scores. Three groups of 80 undergraduates took the MMPI under regular, faking-good, or faking-bad instructions. As expected, faking-bad subjects scored significantly lower than regular subjects on the 100 most subtle items, and this was due to their responses to those. 73 of the items whose face validity was misleading. The results are consistent with other work showing valid uses of subtle items in detecting deception. 相似文献
915.
Because rheumatoid arthritis (RA) has a more unpredictable course than osteoarthritis (OA), we hypothesized that generalized expectancies (optimistic/ pessimistic) influence the psychosocial adjustment of RA patients, whereas disease severity influences the adjustment of OA patients. Path analysis (LISREL VI) revealed that pessimistic RA patients (N= 107) and the more physically disabled OA patients (N= 108) reported poorer adjustment. The hypothesized mediating role of coping was supported for the RA but not the OA sample; that is, pessimism was associated with poor adjustment through greater use of wishful thinking coping. Unexpectedly, problem-solving coping was not found to mediate the optimism adjustment relationship. 相似文献
916.
This study explored one mechanism through which acute disaster stress (injury, life threat, property damage, loss) may produce lasting psychological distress (depression, anxiety, somatization, hostility). More specifically, the study examined the mediating roles of seven domains of chronic stress (marital, parental, filial, financial, occupational, ecological, physical) within a sample of 930 disaster victims and controls. The results provided strong support for the hypothesis that chronic stress mediates the long-term effects of acute disaster stress on psychological distress. The main effects of loss, though limited in strength, were completely explained by victims’ higher financial, marital, filial, and physical stress. The effects of injury, though quite strong, were largely mediated by these same domains of chronic stress. Likewise, the effects of life threat were largely mediated by all these domains plus ecological stress. A mediational model was not appropriate for understanding the consequences of property damage because it did not exhibit a main effect on psychological distress. 相似文献
917.
Christopher R. Agnew Vaida D. Thompson Valerie A. Smith Richard H. Gramzow David P. Currey 《Journal of applied social psychology》1993,23(24):2013-2042
A proximal-distal theoretical framework was developed to examine the multivariate roots of homophobia. Using data from a sample of 288 undergraduates who had participated in a computer-assisted panel study over a three-year period, the effects on homophobia of distal and proximal family factors (e. g., parental education and family environment), distal and proximal individual factors (e. g., personality constructs and current beliefs), and proximal individual-situational factors (e. g., acquaintance with homosexuals) were tested in regression analyses. Both analyses employing sets of variables varying in proximity to the homophobic attitude and hierarchical regression employing variables contributing significantly in each set supported the proposed framework. All sets predicted significantly when regressed separately on homophobia; the sets containing the distal factors contributed most weakly, and the sets containing the proximal factors contributed most strongly. In hierarchical regression analysis, this pattern maintained such that the incremental increase in r2 decreased with the addition of each more distal set, with the most distal factors failing to contribute significantly to the prediction. The importance of study findings for attitude change efforts is discussed. 相似文献
918.
J. Stephen Newton William R. Ard Robert H. Horner 《Journal of applied behavior analysis》1993,26(2):239-245
We examined the accuracy of 24 staff members' predictions of activities preferred by 14 individuals with severe disabilities. For each of 144 activities, staff members assigned a client preference rating of “likes a lot,” “likes,” or “dislikes.” Two activities from each category were randomly selected for each individual with disabilities. Pairs of selected activities were presented to the individuals, who were prompted to choose an activity. Staff members' activity preference ratings correctly predicted the choices made by the individuals with disabilities for 78% of the trials. The more divergent the preference ratings of the paired activities, the more likely staff members were to predict correctly the activity selected by a participant. 相似文献
919.
Effects of differences between stimuli, responses, and reinforcer rates on conditional discrimination performance 总被引:5,自引:5,他引:0 下载免费PDF全文
In a discrete-trial conditional discrimination procedure, 4 pigeons obtained food reinforcers by pecking a key with a short latency on trials signaled by one stimulus and by pecking the same key with a long latency on trials signaled by a second stimulus. The physical difference between the two stimuli and the temporal separation between the latency values required for reinforcement were varied factorially over four sets of conditions, and the ratio of reinforcer rates for short and long latencies was varied within each set of conditions. Stimulus discrimination varied directly with both stimulus and response differences and was unaffected by the reinforcer ratio. Sensitivity to reinforcement, estimated by generalized-matching-law fits to the data within each set of conditions, varied directly with the response difference but inversely with the stimulus difference arranged between sets of conditions. Because variations in stimulus differences, response differences, and reinforcer differences did not have equivalent effects, these findings question the functional equivalence of the three terms of the discriminated operant: antecedent stimuli, behavior, and consequences. 相似文献
920.
One-hundred and ninety-two children (equally split between boys and girls) were studied when they were 5 years old in two settings, school and home. The children were observed in playgroups and at home, and were rated on activity level by their parents on the Rothbart Child Behavior Questionnaire. At age 7, the children were tested in our laboratory on the Harter Test of Perceived Competence and on an achievement task, and parents filled out the Child Behavior Checklist, the Child Behavior Questionnaire, and the Conners Parent Rating Scale. Home observations of activity level were significantly related to parent ratings of activity level, but not to school observations. Activity level at age 5 was related to parents' ratings of aggression and hyperactivity and to girls' learning problems at age 7. Activity level was not related to the children's self-perceived competence, but mothers' rating of high activity level at age 5 was related to low reading comprehension at age 7.Preparation of this paper was supported in part by the Center for Research for Mothers and Children, NICHD, U.S. PHS grant HD 19739 to Beverly I. Fagot. 相似文献