全文获取类型
收费全文 | 37380篇 |
免费 | 1328篇 |
国内免费 | 13篇 |
专业分类
38721篇 |
出版年
2018年 | 549篇 |
2017年 | 593篇 |
2016年 | 651篇 |
2015年 | 466篇 |
2014年 | 593篇 |
2013年 | 3128篇 |
2012年 | 977篇 |
2011年 | 1095篇 |
2010年 | 748篇 |
2009年 | 697篇 |
2008年 | 1040篇 |
2007年 | 1010篇 |
2006年 | 983篇 |
2005年 | 859篇 |
2004年 | 815篇 |
2003年 | 845篇 |
2002年 | 872篇 |
2001年 | 864篇 |
2000年 | 870篇 |
1999年 | 693篇 |
1998年 | 445篇 |
1997年 | 443篇 |
1996年 | 442篇 |
1995年 | 423篇 |
1992年 | 653篇 |
1991年 | 613篇 |
1990年 | 593篇 |
1989年 | 565篇 |
1988年 | 572篇 |
1987年 | 551篇 |
1986年 | 602篇 |
1985年 | 583篇 |
1984年 | 542篇 |
1983年 | 496篇 |
1982年 | 443篇 |
1981年 | 449篇 |
1979年 | 547篇 |
1978年 | 491篇 |
1977年 | 445篇 |
1976年 | 446篇 |
1975年 | 491篇 |
1974年 | 589篇 |
1973年 | 611篇 |
1972年 | 460篇 |
1971年 | 447篇 |
1970年 | 429篇 |
1969年 | 444篇 |
1968年 | 525篇 |
1967年 | 472篇 |
1966年 | 489篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
Previous studies suggest that adults and children divide spoken syllables into subsyllabic onset-rime units more readily than into any other kind of subsyllabic unit. We asked whether this same onset-rime segmentation might also be beneficial in teaching children to read. That is, can children learn more words segmented at the onset-rime boundary (e.g., CL-AP, D-ISH) than words segmented after the vowel (CLA-P, DI-SH)? In three experiments, first-grade students studied single words presented by a computer connected to a high-quality speech synthesizer. Experiment 1 used words of four letters but only three phonemes apiece (e.g., WHIP, DISH). In some of these words the onset-rime segmentation corresponded to the initial bigram (e.g., WH-IP); in some it did not (e.g., D-ISH). Experiments 2 and 3 used words of four letters and four phonemes (e.g., CLAP, CORN). In all three experiments, onset-rime segmentation proved more helpful than postvowel segmentation in short-term learning of the words. 相似文献
972.
Expectancy models of alcohol use 总被引:4,自引:0,他引:4
The primary goal of the present article is to compare expectancy models with competing attitude models of alcohol use. First, several methodological issues in expectancy research were addressed, to more adequately compare the theoretical models. Study 1 examined the effect of possible self-report biases on associations among expectancy constructs and alcohol use. In Studies 2 and 3, the basic distinction between general factors of positive and negative alcohol expectancies was investigated in both cross-sectional and prospective models. Alternative predictions that were based on competing expectancy and attitude theories were evaluated primarily in Study 3. Results from these studies supported the validity of the expectancy constructs and the proposed distinctions among expectancy and attitude constructs-in terms of strong discriminant validity, absence of self-report bias, and differential prediction of alcohol use. Furthermore, the findings favored certain expectancy models over alternative attitude models of alcohol use, reaffirming the usefulness of the expectancy framework. 相似文献
973.
Personality Correlates of Confidence in One's Decisions 总被引:2,自引:0,他引:2
ABSTRACT Taylor and Brown (1988) hypothesized that certain illusions, such as unrealistic optimism, are predictably associated with positive affect, social skills, and intellectual functioning. To test this hypothesis, we obtained data from 162 students who first filled out a questionnaire containing dispositional measures of affect, social skills, and approaches to problem solving; in a second session they completed three tasks requiring difficult decisions, reporting their confidence in each decision. Accuracy of judgments was found to vary considerably from task to task, but confidence ratings showed a consistent pattern of individual differences. This result lent support to Taylor and Brown's hypothesis, as did other features of the data, most notably several small but significant Pearson r s between confidence ratings and dispositional variables. Removing the effects of accuracy from these r s reduced their magnitude very little; it yielded partial r s interpretable as evidence that illusory confidence is associated with personality traits which, in this case, load saliently on factors labeled ( a ) affective, and ( b ) cognitive/social. 相似文献
974.
The fleeting gleam of praise: cognitive processes underlying behavioral reactions to self-relevant feedback 总被引:1,自引:0,他引:1
W B Swann J G Hixon A Stein-Seroussi D T Gilbert 《Journal of personality and social psychology》1990,59(1):17-26
We propose that a preference for favorable social feedback (i.e., self-enhancement) requires only that feedback be characterized as favorable or unfavorable but that a preference for self-confirming feedback (i.e., self-verification) is based on a more elaborate set of cognitive operations that requires both the characterization of feedback and a subsequent comparison of that feedback to a representation of self stored in memory. Study 1 set the stage for testing this hypothesis by showing that depriving people of processing resources interfered with their tendency to access their self-conceptions. In Studies 2 and 3, participants who were deprived of resources preferred the favorable, self-enhancing evaluator, whereas control participants displayed a preference for the self-verifying evaluator, even if that evaluator was relatively unfavorable. 相似文献
975.
R S Baron C E Cutrona D Hicklin D W Russell D M Lubaroff 《Journal of personality and social psychology》1990,59(2):344-352
This study investigated whether social support was related to immune function among spouses of cancer patients. Effects of depression and negative life events were examined as potential mediators. Results showed evidence of greater immunocompetence on 2 of 3 dynamic measures: natural killer cytotoxicity and proliferation response to phytohemagglutinin among spouses who reported high levels of social support. All six components of social support assessed by the Social Provisions Scale (Cutrona & Russell, 1987) were strongly related to these indices of immune function. No evidence was found for mediation by either life events or depression. 相似文献
976.
Current methods for assessing the quality of internalized object representations have not provided a continuous variable that simultaneously includes both an accuracy and a maturity component. A modification of Blatt, Brooks, Brenneis, and Schimek's (1976) Concept of the Object on the Rorschach scale that would combine the two components by weighting the quality of each response according to its form level was proposed. Initial discriminant and convergent validity of this modification was checked through correlations and multiple regression analyses using behavioral, diagnostic, and demographic data from 84 adolescent inpatients as dependent variables. Results indicate the modified score was directly related to measures of peer relatedness, intelligence, psychological health, and reality testing, and indirectly related to measures of psychosis and hostile, unmanageable behavior. The results support the utility of the modification for providing a continuous score that assesses both developmental maturity and accuracy, the two dimensions on which the concept of object representation is based. 相似文献
977.
978.
The purpose of this study was to examine the relationship between learned resourcefulness and two common addictive behaviors, namely, drinking and smoking. Male and female college students (N = 175) completed the Self-Control Schedule (SCS), the Quantity-Frequency-Variability questionnaire, and a smoking history form. Learned resourcefulness was related to self-reported patterns of alcohol consumption; specifically, heavy drinking subjects were lower in learned resourcefulness than were light and moderate drinkers who, in turn, were lower in learned resourcefulness than were infrequent drinkers and abstainers. Learned resourcefulness was only modestly related to smoking, with students who had never smoked evidencing somewhat higher learned resourcefulness than ex-smokers and current smokers. Overall, these data provide correlational support for the notion that learned resourcefulness may protect young adults against substance abuse. 相似文献
979.
Clerical people, returning to secular life, may undergo shifts in self-experience, including alterations in internal object relations. Self-psychology, positing the importance to health of cohesion of all aspects of self, provides a theoretical model for exploring such shifts and their facilitation through psychoanalytic psychotherapy. A case of a released Roman Catholic priest is discussed to illustrate dynamic processes. Emphasis is on a clinical approach that does not require conversion of religious and spiritual self-experience into drive derivative formulations 相似文献
980.
Responses to recently ignored information may be slower or less accurate than responses to information not recently encountered. Such negative priming effects imply that the mechanism of selective attention operates on unattended, as well as attended, information. In the present experiment, subjects judged the second and fourth letters of five-letter strings (e.g., BABAB) as "same" or "different." Responses were slower when a target letter was identical to the distractors presented in the immediately preceding trial. This effect did not depend on which response was required on the current or preceding trial. The results suggest that ignored information is functionally disconnected from the response system as a whole, rather than from a specific response. 相似文献