全文获取类型
收费全文 | 45718篇 |
免费 | 1611篇 |
国内免费 | 13篇 |
出版年
2018年 | 677篇 |
2017年 | 652篇 |
2016年 | 776篇 |
2015年 | 558篇 |
2014年 | 673篇 |
2013年 | 4394篇 |
2012年 | 1175篇 |
2011年 | 1234篇 |
2010年 | 812篇 |
2009年 | 791篇 |
2008年 | 1188篇 |
2007年 | 1120篇 |
2006年 | 1067篇 |
2005年 | 924篇 |
2004年 | 877篇 |
2003年 | 931篇 |
2002年 | 875篇 |
2001年 | 1307篇 |
2000年 | 1287篇 |
1999年 | 989篇 |
1998年 | 530篇 |
1996年 | 625篇 |
1995年 | 596篇 |
1994年 | 584篇 |
1993年 | 536篇 |
1992年 | 1013篇 |
1991年 | 918篇 |
1990年 | 897篇 |
1989年 | 809篇 |
1988年 | 813篇 |
1987年 | 792篇 |
1986年 | 808篇 |
1985年 | 795篇 |
1984年 | 728篇 |
1983年 | 636篇 |
1982年 | 541篇 |
1981年 | 548篇 |
1980年 | 505篇 |
1979年 | 681篇 |
1978年 | 574篇 |
1976年 | 510篇 |
1975年 | 653篇 |
1974年 | 650篇 |
1973年 | 704篇 |
1972年 | 648篇 |
1971年 | 563篇 |
1970年 | 503篇 |
1968年 | 600篇 |
1967年 | 493篇 |
1966年 | 490篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
Several inherent limitations to secondary school sex education program evaluations are: limited generalizability, lack of longitudinal research, and no clear consensus of program outcomes. With a Bureau of Health Education, Center for Disease Control study as the criterion for program outcomes, a study was undertaken to examine the immediate and long-term impact of sex education upon program participants. Two of the 20 schools in the CDC study identified as having exemplary sex education programs provided access to their students and alumni. Inventories which measured perceived achievement of 33 sex education outcomes were piloted for reliability and validity. Each inventory examined participant changes in knowledge, understanding of self, values, interaction skills, self-esteem, and fear of sex-related activities. Students were surveyed in school; alumni were surveyed through the mail. Response rates ranged from 30 to 100 percent for students and alumni at both schools. Overall there was no statistically significant difference between the perceptions of students and alumni as to achievement of investigated outcomes. Alumni responses at one school did, however, indicate some potentially weak areas of their school's program with respect to values and interaction skills outcomes. It appears that program impact may decrease with time. Thus, isolating and addressing the factors involved may be necessary. This would assist program planners and instructors to strengthen curricula and program activities in order to enhance the overall impact of sex education. The present study supports the notion that positive gains are achieved as a result of each school's sex education program, and these gains remained over time. 相似文献
942.
Susan D Phillips Nicholas J Pazienza Donna J Walsh 《Journal of Vocational Behavior》1984,25(1):96-105
This study provides a reexamination of the role of different decisional strategies in facilitating progress in occupational decision making. Although the assumptions that a rational decision making style is the preferred mode of vocational functioning has been endorsed in a variety of career theories and interventions, there has been conflicting evidence about the validity of this assumption. To examine the role of different decisional approaches in the progress of making an occupational decision, the rational, intuitive, and dependent decision making style scores of 71 undergraduate students were used to predict progress in occupational decision making. The results of the regression analyses failed to provide support for the assumption that a rational style is the most effective in accomplishing this careerrelated task, but indicated strong support for the conclusion that the use of dependent decisional strategies is damaging, particularly in early stages of the decisional process. 相似文献
943.
The authors recently proposed that adverse effects of material rewards on Wechsler subscale performance may be the result of a reward-produced developmental regression. The present study further explores that idea through an attempt to replicate earlier findings with adults and to extend the inquiry to children. Selected Wechsler subscales were administered to 32 subjects at each of three ages (5, 10, and 18 years) under either reward or nonreward conditions. Subscales were chosen to represent both algorithmic and heuristic types of tasks. Reward and nonreward groups (8 males and 8 females per group at each age) were matched initially on age and ability. For adults, consistent with earlier findings, reward had an adverse effect on performance on the heuristic subscales and tended to facilitate performance on the algorithmic subscales. However, rewards generally had no effect at the fourth-grade level and had a reverse effect at the nursery school level, i.e., rewards facilitated heuristic and hampered algorithmic performance. These findings appear to be more consistent with an explanation based on developmental regression than on any available alternative mechanism. 相似文献
944.
945.
I. D. John 《Australian psychologist》1984,19(1):29-37
Psychology seeks to justify its claims to privilege as a social institution largely on the basis of its scientific knowledge claims. These knowledge claims tend to be based on, and to reflect a particular view about the nature of science which is under increasing challenge. This situation is discussed and some of its implications examined. 相似文献
946.
This study investigated the intellectual functioning and personality characteristics of 81 Australian ex-servicemen, 42 of whom had served in Vietnam. A Cognitive Impairment Model (SCIM) developed by Savage (1978, 1981, 1984) enabled intellectual functioning levels, intellectual deterioration and learning ability in the verbal and performance modalities to be asses. The Clinical Analysis Questionnaire (CAQ) of Krug (1980) based 00 Cattell's theory and personality measurement techniques provided an assessment of normal personality characteristics and clinical factors. The data suggested that the two groups, Australian ex-servicemen and Australian Vietnam veterans, were relatively homogeneous with regard to cognitive functioning and gave no indication of impairment in their intellectual levels or of their learning ability. Significant personality differences were, however, found between the two groups of ex-servicemen. The Vietnam veterans showed significantly more tension, depression, guilt, resentment, alienation and hypochondriasis than their colleagues who had remained in Australia. They were more withdrawn from others and from reality and had more abnormal thought than the ex-servicemen who had not been to Vietnam. The cognitive data do not support the view that Vietnam veterans suffered from any serious cognitive impairment. The personality data, however, suggest a significant “Psycbological Stress Syndrome” in these Vietnam veterans which required professional psychological treatment. 相似文献
947.
948.
Craig A. Lammers Bruce D. Naliboff Alvin J. Straatmeyer 《Behaviour research and therapy》1984,22(6):641-650
Four insulin-requiring diabetic Ss were followed in single-S designs to measure the impact of progressive muscle relaxation training on blood glucose and stress levels. Measures of blood glucose, stress, activity and caloric intake were taken four times a day, along with a daily measure of anxiety. Two of the 4 Ss showed a significant decrease in blood glucose during treatment periods as compared to baseline measures. Similarly, 2 of the 4 Ss showed a significant decrease in stress levels during treatment. A multiple regression analysis revealed some significant relationships between blood glucose, stress, activity level and caloric intake. The results support previous studies that show relaxation techniques to be a viable aid in establishing greater diabetic control. 相似文献
949.
Peter M. Monti Robert Boice Allan L. Fingeret William R. Zwick David Kolko Sandra Munroe Aimee Grunberger 《Behaviour research and therapy》1984,22(6):651-660
This paper reports the development and assessment of midi-level behavioral measures of social anxiety in the context of two experiments, one studying an analog student sample, the other a psychiatric sample. Judgments on nine categories of clinically practical midi-level behaviors (e.g. Facial Expression, Orienting, Sense of Timing), based on a review of the literature on human ethology and on pilot research, were compared to global judgments of social anxiety and social skill and to physiological arousal. Intraclass correlations exceeded 0.80 for judgments of the global and midi-level behavioral ratings on both samples. Results of correlational analyses indicated that while there were several significant predictors of global skill and anxiety among the midis, the magnitude of the relationship between midis and globals was stronger for the patient than the student sample. Further analyses based on S's heart rate (HR) reactivity suggested that while global ratings did not significantly predict H R in a high social anxiety situation, one midi-level behavioral rating (self-manipulations) did. The clinical utility of the newly developed measures is discussed with particular attention to their practicality for behavior therapy. 相似文献
950.