全文获取类型
收费全文 | 24471篇 |
免费 | 1095篇 |
国内免费 | 16篇 |
出版年
2020年 | 348篇 |
2019年 | 415篇 |
2018年 | 605篇 |
2017年 | 578篇 |
2016年 | 607篇 |
2015年 | 434篇 |
2014年 | 531篇 |
2013年 | 2305篇 |
2012年 | 939篇 |
2011年 | 998篇 |
2010年 | 612篇 |
2009年 | 601篇 |
2008年 | 843篇 |
2007年 | 824篇 |
2006年 | 820篇 |
2005年 | 724篇 |
2004年 | 676篇 |
2003年 | 676篇 |
2002年 | 667篇 |
2001年 | 654篇 |
2000年 | 605篇 |
1999年 | 484篇 |
1998年 | 305篇 |
1997年 | 292篇 |
1996年 | 284篇 |
1995年 | 262篇 |
1994年 | 235篇 |
1993年 | 243篇 |
1992年 | 348篇 |
1991年 | 365篇 |
1990年 | 340篇 |
1989年 | 321篇 |
1988年 | 291篇 |
1987年 | 301篇 |
1986年 | 300篇 |
1985年 | 335篇 |
1984年 | 321篇 |
1983年 | 248篇 |
1982年 | 243篇 |
1981年 | 230篇 |
1980年 | 205篇 |
1979年 | 252篇 |
1978年 | 215篇 |
1977年 | 205篇 |
1976年 | 201篇 |
1975年 | 232篇 |
1974年 | 264篇 |
1973年 | 265篇 |
1972年 | 211篇 |
1968年 | 203篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
A 3-mo. follow-up was made of 64 male veterans who were discharged from a 21-day Alcohol Detoxification Treatment Program at the Veterans Affairs Medical Center at Lyons, NJ. Scores on the Rotter I-E and Alcohol Responsibility Scales were significantly correlated with tendencies toward a more external direction among the 13% who relapsed, significant on the I-E scale and nonsignificant on the Alcohol Responsibility Scale. When tests were compared as possible predictor variables of alcoholic relapse, the difference in favor of the I-E scale was statistically nonsignificant. 相似文献
992.
The Kaufman Test of Educational Achievement--Brief Form and the Wide Range Achievement Test--Revised Level 2 were administered in counterbalanced order to 50 male incarcerated juvenile delinquents. The analyses showed the similar subtests on the two tests, i.e., Kaufman Reading test and WRAT-R Reading, were highly correlated. The mean standard scores of th e similar subtests were not significantly different from each other. These results contrast with the significantly lower WRAT-R scores found when scores on the WRAT-R Level 1 are compared with those on the Kaufman test. 相似文献
993.
994.
Andrea Levitt Alice F. Healy David W. Fendrich 《Journal of psycholinguistic research》1991,20(4):337-363
Treiman (1983) and others have argued that spoken syllables are best characterized not as linear strings of phonemes, but as hierarchically organized units consisting of an onset (initial consonant or consonant cluster) and a rime (the vowel and any following consonants) and that the rime is further divided into a peak or nucleus (the vowel) and a coda (the final consonants). It has also been argued that the sonority (or vowel-likeness) of the consonant closest to the peak, which is a function of its phonetic class, may have an effect on the strength of boundaries determined by the hierarchical division of the syllable (e.g., Treiman, 1984). We examined the evidence for syllable-internal structure and for sonority in two experiments that employed visually presented stimuli and lexical decision, naming, and reading tasks. Our results provide support for the breakdown of the rime into a peak and a coda and for an effect of the sonority of the postvocalic consonant on that break. This pattern occurred only in our lexical decision tasks, so the effect is assumed to be postlexical. We did not find an effect of the onset-rime boundary, perhaps because of an unanticipated effect of word frequency. Our results are discussed in terms of phonological coding in short-term memory. 相似文献
995.
Robert D. Felner Ruby S. C. Phillips David DuBois A. Michele Lease 《American journal of community psychology》1991,19(3):379-387
Considers a preventive intervention effort designed to modify the characteristics and regularities of the school environment so as to enhance the expectations conveyed to high risk students. Employing this case effort (Weinstein et al., 1991) as a base, several issues are highlighted that deserve greater attention in the design, implementation, assessment, and reporting of other preventively-focused social interventions. These issues include: (1) the degree of program implementation fidelity, (2) the impact a lack of attainment of program fidelity may have on arriving at erroneous evaluation conclusions about social programs, (3) the ways in which the theory and basic research employed in the program rationale is appropriate to and reflected in the program as designed, (4) issues of program potency and dosage, (5) the ways in which quantitative and qualitative evaluation data can enhance each other, and (6) the import of evaluability assessments of programs prior to moving to outcome evaluations. In addressing these issues, the importance of developmentally- and ecologically-informed program formulations is underscored. Finally, the critical role that program reports such as the Weinstein paper, with its careful discussion of both the process of implementation and outcome assessments, can play in the development of more effective prevention program implementation efforts is highlighted. 相似文献
996.
William E. MacLean Jr. David N. Ellis Holly N. Galbreath Leslie F. Halpern Alfred A. Baumeister 《Journal of abnormal child psychology》1991,19(3):319-330
The developmental course of rhythmic motor behavior was followed longitudinally for three groups of preambulatory children — normally developing, Down syndrome, and those with profound motor impairment. The groups differed in chronological age but were comparable with respect to motor age. The motor impaired subjects displayed significantly less rhythmic motor behavior than the nondisabled and Down syndrome groups. In comparing particular subtypes of rhythmic motor behavior, differences were found in both the average number of bouts and duration of subtypes among the groups. Longitudinal analyses of the data over the entire observation period revealed that the rhythmic motor behavior of the children with Down syndrome was more similar to that exhibited by the nondisabled children than was the rhythmic motor behavior of the children with motor impairment. However, there was considerable variability among the groups in several particular subtypes.This research was supported by grants from the National Institute of Child Health and Human Development (HD 17650 and HD 07226).The authors acknowledge the assistance of Robert E. Arendt, Grant Youngquist, Michael Hohn, and Charles Lowitzer in obtaining the observational data and thank the families of the subjects for their enthusiasm and dedication to the project.This study was presented at the 23rd Annual Gatlinburg Conference on Research and Theory in Mental Retardation and Developmental Disabilities, April 21, 1990. 相似文献
997.
David Henry Fern Chertok Christopher Keys Jane Jegerski 《American journal of community psychology》1991,19(6):931-952
Forty-one Protestant ministers completed measures of stress-related symptoms, family of origin contact, church governing body density, history of pastor-parish conflict in the church, and a measure of Bowen's (1959b/1985) concept of emotional triangles. A denominational executive provided ratings of each church's history of pastor-parish conflict. Path analysis using multiple regression showed support for a model in which governing body density and history of conflict predicted emotional triangles, and emotional triangles predicted stress symptoms. Contact with the pastor's family of origin moderated the relationship between emotional triangles and stress symptoms. Results suggest that the organizational and family ecology of the ministerial role can be important in understanding occupational stress among ministers. 相似文献
998.
999.
A Troisi G Schino M D'Antoni N Pandolfi F Aureli F R D'Amato 《Behavioral and neural biology》1991,56(3):307-313
The aim of this study was to assess the validity of the notion that anxiety influences maternal style in monkeys. To this end, we investigated the correlations between measures of the quality of mother-infant relationship and scratching, a behavior pattern that reflects a state of anxiety. The subjects were seven group-living macaque mothers and their infants observed during the first 12 weeks postpartum. Postpartum scratching by the mothers was positively correlated with both maternal possessiveness and maternal warmth, two composite measures of the quality of mother-infant relationship that reflect a possessive and attentive maternal style. Evaluation of the correlations between maternal rank and scratching before and after parturition indicated that interactions with their infants, not those with other group companions, were the main source of anxiety for the mothers. These results support the notion that anxiety influences maternal style in monkeys and suggest that studies aimed at investigating physiological and social correlates of maternal emotionality in nonhuman primates could use scratching as a useful and simple behavioral measure. 相似文献
1000.
Fluid noncompliance and symptomatology in end-stage renal disease: cognitive and emotional variables 总被引:2,自引:0,他引:2
Fluid noncompliance in patients with end-stage renal disease (ESRD) is a widespread problem with severe consequences for health. In addition, ESRD patients report considerable stress in relation to their illness and dialysis treatment. The present study examined the role of cognitive and emotional variables in fluid noncompliance, symptomatology, and stress. Fifty hemodialysis patients were assessed (a) on the cognitive variables of locus of control, self-evaluations of their past compliance, and self-efficacy to resist fluid intake and (b) on the emotional variables of depression, anger, and anxiety. Results showed that cognitive variables accounted for fluid noncompliance and predicted future adherence. Patients high in negative emotions complied equally as well as patients low in negative emotions but were found to report substantially more symptomatology and distress associated with their treatment. The implications of these findings for treatment of ESRD patients and future research are discussed. 相似文献