全文获取类型
收费全文 | 78708篇 |
免费 | 3138篇 |
国内免费 | 35篇 |
专业分类
81881篇 |
出版年
2020年 | 816篇 |
2019年 | 1056篇 |
2018年 | 1484篇 |
2017年 | 1523篇 |
2016年 | 1577篇 |
2015年 | 1078篇 |
2014年 | 1346篇 |
2013年 | 6489篇 |
2012年 | 2412篇 |
2011年 | 2631篇 |
2010年 | 1529篇 |
2009年 | 1565篇 |
2008年 | 2353篇 |
2007年 | 2315篇 |
2006年 | 2091篇 |
2005年 | 1885篇 |
2004年 | 1855篇 |
2003年 | 1676篇 |
2002年 | 1737篇 |
2001年 | 2493篇 |
2000年 | 2313篇 |
1999年 | 1802篇 |
1998年 | 978篇 |
1997年 | 809篇 |
1996年 | 767篇 |
1995年 | 757篇 |
1992年 | 1446篇 |
1991年 | 1384篇 |
1990年 | 1362篇 |
1989年 | 1271篇 |
1988年 | 1238篇 |
1987年 | 1188篇 |
1986年 | 1219篇 |
1985年 | 1321篇 |
1984年 | 1045篇 |
1983年 | 949篇 |
1982年 | 756篇 |
1979年 | 1090篇 |
1978年 | 808篇 |
1976年 | 758篇 |
1975年 | 948篇 |
1974年 | 1033篇 |
1973年 | 1043篇 |
1972年 | 880篇 |
1971年 | 796篇 |
1970年 | 746篇 |
1969年 | 779篇 |
1968年 | 964篇 |
1967年 | 896篇 |
1966年 | 832篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
191.
A typology of five bases of social power developed by French and Raven (1959) has been used to study small-group behavior in field settings by various researchers but interpretation of these data is limited by several methodological shortcomings. This study describes the development and testing of questionnaire measures for the Legitimate, Expert, Referent, Reward, and Coercive bases of social power and attempts to correct some of the scale format confounds that have affected previous empirical efforts. Analyses of Likert-scaled responses from the 23-item questionnaire show for the first time that these five constructs are factorially identifiable and orthogonal. Scale responses are shown to accurately reflect hierarchical status differences in an organization and to correlate significantly with such common leader behaviors as Initiation of Structure and Consideration. 相似文献
192.
This study was designed to assess the accuracy of perceived levels of body fatness as indicated by 11- and 12-year-old children. Using a rating scale ranging from 1 (extremely lean) through 9 (extremely overweight), 50 males and 50 females estimated personal levels of body fatness. Using a 2 × 2 between-and-within-groups ANOVA, these estimates were compared to individual skinfold sum percentile scores derived from comparisons with national skinfold norms. The results revealed that the females tended to overestimate personal levels of body fatness, whereas estimates given by the male subjects were interpreted as not significantly different from skinfold sum percentile scores. 相似文献
193.
Evidence increasingly links a high-fat, low-fiber diet to coronary heart disease and certain site cancers, indicating a need for large-scale dietary change. Studies showing the effectiveness of particular procedures in specific settings are important at this point. The present study, using an A-B-A-B design and sales data from computerized cash registers, replicated and extended previous work by showing that inexpensive prompts (i.e., signs and fliers) in a national fast-food restaurant could increase the sales of salads, a low-fat, high-fiber menu selection. Suggestions also are made pertinent to more widespread use of the procedures. 相似文献
194.
Brenda L. Dawson D. Balfour Jeffrey James A. Walsh 《Journal of applied social psychology》1988,18(16):1353-1360
This study investigated the effect of television food commercials on children's self-control within a resistance to temptation paradigm. Commercial type, food stimulus type, and the child's sex provided the three independent variables in a 4 × 4 × 2 factorial design. Behavioral and self-report indices of temptation and control were measured. Children were significantly more tempted to transgress for the low-nutrition food, regardless of the commercial shown. Sex differences in reported degree of temptation were found. However, the television commercials did not affect the children's latency to transgress. 相似文献
195.
A C Bentley 《The Journal of general psychology》1988,115(1):7-14
Celiac-Sprue Disease, also referred to as Non-Tropical Sprue, is a dietary disease. Celiac-Sprue patients were asked to complete a questionnaire regarding the effect of dietary restrictions on participation in the Passover meal and reception of Communion. A pilot study suggested that subjects made changes in their religious practices because of dietary restrictions. A second, more detailed survey, was performed in which 58 subjects participated and 14 religions were represented. The results indicated that many subjects made changes in their religious practices (p less than .01), made changes on their own initiative (p less than .01), or violated diet prescribed for the disease under the religious setting versus other settings (p less than .05). 相似文献
196.
A H Baker 《The Journal of general psychology》1988,115(2):161-170
In this study I explored whether the degree of anticipation/habituation (undershooting/overshooting) varies with the dimension to be localized, when the method of adjustment is used in space localization. In this study, undershooting occurred for both the vertical (Group 1) and the horizontal (Group 2) dimensions, but was significant only for verticality. The magnitude of undershooting observed for verticality was significantly greater than that for horizontality. A secondary issue regarding the possible relationship between spatial category width and undershooting/overshooting was examined. It was hypothesized that greater degree of spatial category width would be associated with greater undershooting. The opposite was found: Spatial category width was negatively related to undershooting. Finally, within each group, very high consistency of magnitude of spatial category width was observed (rs greater than .90), despite the fact that spatial category width showed shrinkage over the course of the study. 相似文献
197.
Although peers' and teachers' evaluations of children's prosocial behavior and peers' sociometric ratings frequently have been used in studies of social development, the validity of young children's ratings of others has been questioned, as has that for teachers' ratings of prosocial behavior. In this study, preschoolers' ratings of peers' sociometric status and prosocial behavior, as well as teachers' ratings of children's prosocial dispositions, were obtained. These were correlated with children's naturally occurring prosocial or social behavior; ratings of prosocial behavior also were correlated with children's prosocial moral reasoning and prosocial self-attributions. Peers' sociometric ratings were positively related to children's sociability whereas prosocial ratings were related to helping (but not sharing) behavior. Teachers' ratings of prosocial behavior were not related to frequency of prosocial behaviors, but were positively related to developmentally mature moral judgments and self-reported motives. 相似文献
198.
Schinke SP Orlandi MA Botvin GJ Gilchrist LD Trimble JE Locklear VS 《Journal of counseling psychology》1988,35(1):87-90
Tobacco, alcohol, and drug use are problems for American-Indian people. We reviewed these problems and the explanations for them and described a bicultural competence skills approach for preventing substance abuse with American-Indian adolescents. Data from a study of that approach suggest its efficacy with American-Indian youth. At posttest and a 6-month follow-up, American-Indian subjects who received preventive intervention based on bicultural competence skills concepts improved more than did American-Indian subjects in a no-intervention control condition on measures of substance-use knowledge, attitudes, and interactive skills, and on self-reported rates of tobacco, alcohol, and drug use. Our findings have implications for future substance-abuse prevention research with American-Indian people. 相似文献
199.
200.