全文获取类型
收费全文 | 58670篇 |
免费 | 2394篇 |
国内免费 | 28篇 |
出版年
2020年 | 679篇 |
2019年 | 797篇 |
2018年 | 1158篇 |
2017年 | 1166篇 |
2016年 | 1202篇 |
2015年 | 832篇 |
2014年 | 1072篇 |
2013年 | 4576篇 |
2012年 | 1873篇 |
2011年 | 1935篇 |
2010年 | 1186篇 |
2009年 | 1219篇 |
2008年 | 1729篇 |
2007年 | 1734篇 |
2006年 | 1565篇 |
2005年 | 1399篇 |
2004年 | 1283篇 |
2003年 | 1254篇 |
2002年 | 1250篇 |
2001年 | 1869篇 |
2000年 | 1816篇 |
1999年 | 1397篇 |
1998年 | 616篇 |
1997年 | 586篇 |
1996年 | 548篇 |
1995年 | 546篇 |
1992年 | 1172篇 |
1991年 | 1038篇 |
1990年 | 1139篇 |
1989年 | 981篇 |
1988年 | 982篇 |
1987年 | 935篇 |
1986年 | 966篇 |
1985年 | 953篇 |
1984年 | 829篇 |
1983年 | 761篇 |
1982年 | 570篇 |
1979年 | 867篇 |
1978年 | 650篇 |
1977年 | 543篇 |
1975年 | 725篇 |
1974年 | 810篇 |
1973年 | 850篇 |
1972年 | 658篇 |
1971年 | 615篇 |
1970年 | 562篇 |
1969年 | 613篇 |
1968年 | 745篇 |
1967年 | 677篇 |
1966年 | 620篇 |
排序方式: 共有10000条查询结果,搜索用时 815 毫秒
991.
Set/reset: use and disuse of concepts in impression formation 总被引:2,自引:0,他引:2
L L Martin 《Journal of personality and social psychology》1986,51(3):493-504
992.
993.
The study of adolescent sexual development has typically focused on the incidence and age of onset of particular behaviors. Recent developments in the analysis of covariance structures permit more powerful simultaneous tests of the determinants of adolescent sexual behavior. These new methods allow the assessment and evaluation of the interrelatedness between unobserved, latent constructs. Data were obtained from 183 males and 193 females ranging in age from 12 to 18 years old, selected from three birth cohorts using a stratified random sample. Eight latent constructs--Sexual and Dating Involvement, Self-Acceptance, Feminist Sex Role Attitudes, Deviant Social Network, Importance of Dating, Lack of Heterosexual Competence, Sexually Active Social Network, and Stressful Change Events--were hypothesized to explain the variance in 26 observed variables. Several causal models were tested that specified structural relationships among the latent constructs. A theoretically meaningful model was arrived at that linked the eight, error-free factors. 相似文献
994.
R Pisacreta D Gough E Redwood L Goodfellow 《Journal of the experimental analysis of behavior》1986,45(3):269-282
Four pigeons were trained on a multiple variable-interval 30-s extinction schedule with various pairs of spoken English words presented as the discriminative stimuli. The birds typically produced discrimination indices of 70% to 90% accuracy. Discrimination accuracy was improved by shortening the interval between auditory stimulus presentations, and by increasing the number of syllables in the words. 相似文献
995.
Recent work on orientation perception and memory in infants suggest that oblique stimulus orientations are treated as members of a category. The two studies in this report support this hypothesis and extend previous findings by demonstrating that this category includes obliques on either side of vertical even when infants are previously exposed to obliques on only one side. 相似文献
996.
Predictions of physical symptomatology by daily life events and by major life events were compared, replicating and expanding work reported by DeLongis, Coyne, Dakof, Folkman, & Lazarus (1982). Analyses of daily, prospective data collected on 79 married men for 90 days demonstrated that daily, undesirable events were better predictors of symptom frequencies than either past, major life events or daily, desirable events. These results, similar to those found by DeLongis et al. (1982), were further explored by examining "healthy" subjects versus subjects with prior medical conditions. Undesirable daily events were a much stronger predictor of physical symptoms in the healthy group than in the prior medical conditions group. 相似文献
997.
H L Swanson 《Journal of experimental child psychology》1986,41(3):461-488
This study investigates the extent to which learning disabled readers' atypical encoding relates to their deficiencies in semantic memory. Inferences related to ability group performance were based on the assumption that encoding involves the matching of incoming information against a featural representation of that information in semantic memory. To this end, learning disabled and nondisabled readers in two age groups were compared on dichotic listening recall tasks that included orienting and nonorienting instructions. Orienting instructions directed children's attention toward semantic, phonemic, or structural word features. Dependent measures were lateralization, free recall, retrieval organization, and selective attention. The efficiency of allocating attentional resources was inferred from correlations between central and incidental recall. Primary results included the following: Disabled and nondisabled readers' ear asymmetry differences were dependent upon age, orienting instructions, and type of word list; disabled readers' recall and organization scores were lower than skilled readers'; however, both ability groups benefitted from orienting instructions compared to nonorienting instructions; during orienting instructions, disabled readers were less able than skilled readers to divide their attention between target and nontarget word features, especially during interhemispheric processing conditions; and the relative efficiency of allocating attentional resources differed qualitatively between the two ability groups. The results suggest that ability group variations reflect the structure of the memory trace in interaction with ear presentation and encoding processes. It is inferred that disabled readers' inferior memory traces reflect the quantity and internal coherence of information stored in semantic memory as well as the means by which such information is accessed. 相似文献
998.
999.
1000.
M J Strube C L Lott R Heilizer B Gregg 《Journal of personality and social psychology》1986,50(2):403-412
We investigated the control judgments of Type A and B actors and observers after five tasks in which actual response-outcome contingency and success were varied systematically. Results indicated that, overall, actors provided higher control judgments than did observers, and both actual contingency and success influenced judged control. Type A and B actors did not differ in their self-perceptions of control but observers judged the Type A actors to have exerted more control than the Type B actors, primarily on positive contingency tasks. These findings suggest that Type As, because of their more active, dynamic style, may be credited by observers with more control or competence than is warranted. By contrast, the more relaxed style of the Type B may lead to lower than warranted evaluations of control or competence. Lastly, Type As were found to learn the contingencies better than Type Bs with important implications for the actual exercise of control. 相似文献