全文获取类型
收费全文 | 70370篇 |
免费 | 2811篇 |
国内免费 | 30篇 |
专业分类
73211篇 |
出版年
2020年 | 739篇 |
2019年 | 895篇 |
2018年 | 1212篇 |
2017年 | 1285篇 |
2016年 | 1358篇 |
2015年 | 970篇 |
2014年 | 1179篇 |
2013年 | 5229篇 |
2012年 | 2164篇 |
2011年 | 2161篇 |
2010年 | 1385篇 |
2009年 | 1308篇 |
2008年 | 1941篇 |
2007年 | 1942篇 |
2006年 | 1715篇 |
2005年 | 1589篇 |
2004年 | 1469篇 |
2003年 | 1368篇 |
2002年 | 1402篇 |
2001年 | 2168篇 |
2000年 | 2070篇 |
1999年 | 1581篇 |
1998年 | 719篇 |
1997年 | 660篇 |
1996年 | 633篇 |
1992年 | 1437篇 |
1991年 | 1297篇 |
1990年 | 1341篇 |
1989年 | 1179篇 |
1988年 | 1218篇 |
1987年 | 1142篇 |
1986年 | 1199篇 |
1985年 | 1210篇 |
1984年 | 993篇 |
1983年 | 945篇 |
1982年 | 673篇 |
1979年 | 1143篇 |
1978年 | 763篇 |
1977年 | 717篇 |
1976年 | 684篇 |
1975年 | 943篇 |
1974年 | 1079篇 |
1973年 | 1143篇 |
1972年 | 916篇 |
1971年 | 875篇 |
1970年 | 838篇 |
1969年 | 876篇 |
1968年 | 1110篇 |
1967年 | 999篇 |
1966年 | 868篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
931.
R. M. Foxx Martin J. McMorrow Michele Hernandez Martha Kyle Ron G. Bittle 《Behavioral Interventions》1987,2(2):77-88
A social skills training program was evaluated with emotionally disturbed adolescent inpatients. The targeted social skills required an action or reaction within six skill areas. The program was adapted from a commercially available social skills training game that features the use of response specific feedback, self-monitoring, individualized reinforcers, and individualized performance criteria. A peer conducted the baseline and posttraining sessions while the training was conducted by an adult who had no previous interactive history with the subjects. A multiple baseline design across groups demonstrated that the program increased appropriate responding in all skill areas and that these effects generalized during the posttraining peer conducted sessions. A generalization test indicated that the subjects used their newly learned skills with a novel adult outside the training setting. The program appears quite applicable to emotionally disturbed adolescents since it targets skills in a variety of areas and employs standardized procedures to enhance replicability. 相似文献
932.
933.
The present study examined observers’ ability to discriminate canonical and dynamically anomalous collisions that were presented in either frictionless or frictional systems. Whereas previous research has provided qualitative demonstrations that dynamic information can be extracted from visual events, the current study provides a parametric assessment of observers’ sensitivity to dynamic invariants. Our findings indicate that observers are competent when viewing both familiar, terrestrial (frictional) systems and unfamiliar but computationally simpler, 0-G (frictionless) systems. Thus, our sensitivity to these dynamic invariants in visual events is robust in natural systems whose dynamic properties differ from those of the environment in which we evolved and developed. 相似文献
934.
Normative data are presented for the probability of successfully completing 192 single-solution word fragments. Normative data on the familiarity of college students with the solution words are also given, along with estimates of word frequency from existing norms. Regression analyses were performed in order to predict fragment completion difficulty from familiarity, frequency, and several structural characteristics of the fragments. Familiarity, whether or not first and/or last letters appeared in the fragment, and the ratio of letters to missing letters in the fragment were included in the regression equation as significant predictors of difficulty for this fragment set. 相似文献
935.
Howard L. Kaplan 《Behavior research methods》1987,19(2):210-214
The Scheduled Measurement System (SMS) is a collection of related programs for administering performance and rating tasks to human subjects. It was designed to provide a common task scheduling and data management environment for a diversity of measures. SMS has greatly reduced the effort required to analyze and archive data after experiments, but it has been less successful in reducing some of the effort required to implement experiments. While programming is not difficult, documentation and user training remain the most primitive parts of the system. 相似文献
936.
All seven variables of containment theory were operationalized for questionnaires. Data were collected from 677 adolescents in a variety of high schools and correctional institutions, and divided into categories by race and sex. Factor analysis indicated that the structure of the relationships among the seven containment variables and delinquency was substantially different among black females. 相似文献
937.
This study measured students' attitudes toward a university's student health services (SHS) and identified factors that were related to their attitudes. A questionnaire surveying students' attitudes was administered to a sample of 150 students at the Oxford Campus of the University of Mississippi. Analysis of the data revealed that students' attitudes had a statistically significant correlation with the following variables: perceived medical care cost, amount of health information/education received during medical encounters, time spent in the waiting room of the SHS, sex of the student, and income of the student. There was no significant relationship between attitude and age. 相似文献
938.
M L Clark 《Adolescence》1986,21(81):205-213
The differences in the personality and social backgrounds of science and non-science majors were assessed for 91 black and 109 white natural, social, and nonscience college majors. Subjects were administered the 16PF, Bem Sex-Role Inventory, and the Attitude Toward Women Scale, and data were collected on birth order, number of siblings, and social class level. Natural science majors were of a higher social class, had higher intelligence test scores, were more reserved, sober, practical, and male sex-role oriented than the social and non-science majors. Blacks and females resembled their white or male counterparts when categorized by college major. 相似文献
939.
This research evaluated the effects of involvement of adolescents in community service activities on levels of alienation. It was proposed that alienation could be reduced through the implementation of a model which utilized community service activities to facilitate adolescent access to adult society, development of responsibility, collaborative and cooperative work, and control over planning and outcomes. It is suggested that adolescent involvement in service activities can produce positive benefits, among which are reduced levels of alienation, improved school behavior, improved grade point average, and acceptance by the adult community. These findings also suggest that females respond more positively to school when allowed to problem-solve collectively and collaboratively. 相似文献
940.
Biofeedback, cognitive training and relaxation techniques as multimodal adjunct therapy for hospitalized adolescents: a pilot study 总被引:1,自引:0,他引:1
Modifications and adjuncts to traditional therapy techniques appear to be necessary for successfully treating hospitalized adolescents with impaired social and verbal skills, and a history of acting-out behavior. Modified therapy groups were combined with a structured biofeedback and cognitive training program to help these adolescents control anger and modify their behavior. Used in conjunction with training and practice in relaxation techniques, this multimodal treatment approach appeared to be helpful in both reducing incidents of acting out on residential units, and in reaching individualized therapeutic goals. The present paper describes use of this multimodal approach within selected residential settings, and outlines the structured materials developed by the authors. 相似文献