全文获取类型
收费全文 | 70458篇 |
免费 | 2676篇 |
国内免费 | 38篇 |
出版年
2020年 | 748篇 |
2019年 | 899篇 |
2018年 | 1323篇 |
2017年 | 1353篇 |
2016年 | 1412篇 |
2015年 | 933篇 |
2014年 | 1165篇 |
2013年 | 5888篇 |
2012年 | 2157篇 |
2011年 | 2339篇 |
2010年 | 1382篇 |
2009年 | 1384篇 |
2008年 | 2080篇 |
2007年 | 2059篇 |
2006年 | 1823篇 |
2005年 | 1653篇 |
2004年 | 1614篇 |
2003年 | 1485篇 |
2002年 | 1558篇 |
2001年 | 2277篇 |
2000年 | 2194篇 |
1999年 | 1667篇 |
1998年 | 874篇 |
1997年 | 751篇 |
1996年 | 677篇 |
1995年 | 653篇 |
1994年 | 655篇 |
1993年 | 678篇 |
1992年 | 1350篇 |
1991年 | 1277篇 |
1990年 | 1286篇 |
1989年 | 1183篇 |
1988年 | 1128篇 |
1987年 | 1134篇 |
1986年 | 1121篇 |
1985年 | 1200篇 |
1984年 | 932篇 |
1983年 | 829篇 |
1982年 | 670篇 |
1979年 | 975篇 |
1978年 | 730篇 |
1975年 | 890篇 |
1974年 | 930篇 |
1973年 | 900篇 |
1972年 | 810篇 |
1971年 | 718篇 |
1969年 | 707篇 |
1968年 | 838篇 |
1967年 | 811篇 |
1966年 | 748篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
D A de Rosenroll 《Adolescence》1987,22(88):791-802
This paper reviews six articles which appear to be representative of the past fifteen years during which researchers have focused on early adolescent egocentrism. Each article is described in chronological order and compared to research findings suggested by the other articles. Although the researchers have suggested some interesting associations, there is a lack of consistency among their findings. The author indicates methodological problems and questions for further research which arise from the reviewed articles. 相似文献
972.
G Calhoun 《Adolescence》1987,22(88):939-943
Bibliotherapy has been used for generations by professionals in medicine, psychology, counseling, social work, and education. A selected review of the literature is provided to show how bibliotherapy was used in the past and how it is currently employed to implement and facilitate self-identification and to enhance self-perception. Researchers concur that the process of providing pupils with carefully monitored literature will result in positive or negative changes in their self-perception. 相似文献
973.
Keeping juvenile delinquents in school: a prediction model 总被引:1,自引:0,他引:1
The purpose of this study was to test an empirically based prediction model of school dropout on a sample of 137 juvenile delinquents, some who have dropped out and some who have remained in school. The specific factors among the many found in previous research that are salient for predicting whether delinquent youths will drop out or remain in school were determined. An important finding of this study is that it required only four factors to yield a high level of prediction: misbehavior in school, disliking school, the negative influence of peers with respect to dropping out and getting into trouble, and a marginal or weak relationship with parents. The four factors identified create a model that is directly applicable to prevention strategies and is extremely parsimonious. 相似文献
974.
Why do some pregnant teenagers decide to carry to term while others terminate their pregnancy? This study examined the influence of family relationships and support, religion, and education on the decision to carry or to abort. A nonrandom sample of 43 pregnant Puerto Rican teenagers (21 who carried and 22 who aborted) were interviewed in 1982 using a 34-item interview schedule. It was found that girls in the carry group were more significantly influenced and supported by family and friends than were those in the abort group. Fathers were the least influential persons in both carry and abort groups, while mothers were the most influential in the carry group, and sisters in the abort group. Brothers, boyfriends, and best friends were more influential for carry girls than for abort girls. Contrary to expectations, girls in the abort group reported a greater degree of religiosity than did those in the carry group. Further, girls who received strong support from family and friends reported a higher degree of satisfaction with their decision than did those who received less support. Finally, girls in the abort group were more likely to continue their education than were those in the carry group. Overall, the findings of this study have immediate implications for research and counseling services. Practitioners should focus on the girls in conjunction with their families in order to achieve better results in both treatment and preventive services. 相似文献
975.
Using a backward-masking paradigm with a bias-free and ceiling-free psychophysical task, we tested hypnotized and control subjects for speed of visual information processing. Approximately half of each group received visual imagery suggestions in an attempt to influence attention. Imagery produced no significant differential effect. Although an absence of a hypnotizability-performance relationship was in keeping with findings of a previous study, those subjects in the present study who performed under hypnosis were, as a group, significantly superior to the other subjects in speed of information processing. 相似文献
976.
E M Weiler B Katbamna N Nileshwar A Dell'Aira 《The Journal of general psychology》1987,114(4):411-421
The present study examined the similarities between four auditory adaptation techniques to determine whether the effects were correlated. The four adaptation techniques compared were: Simultaneous Dichotic Loudness Balance technique (SDLB; Hood, 1950), Magnitude Estimated Binaural technique (MEB; Botté, Canévet, & Scharf, 1982), Magnitude Estimated Monaural technique, (MEM; Weiler, Sandman, & Pederson, 1981), and the Monaural Reaction Time technique (RT; Davis & Weiler, 1976). Results did not show significant correlations between the four techniques, except (r = 0.39) between MEB and MEM procedures. This correlation was much less than the reliability of the measures would allow (r = 0.98 and r = 0.99, respectively). Thus, it appears that the different methods either produced different adaptation effects or measured different aspects of auditory adaptation. The normal ear apparently shows several forms of adaptation, which reduces the perceptual strength of a continuing stimulus, in favor of an intermittent, less redundant one. 相似文献
977.
H G Cohen 《The Journal of genetic psychology》1987,148(1):71-78
During October and November of 1983, three subsamples were selected from three schools in Mesa, Arizona: 34 students in 6th grade, 34 students in 8th grade, and 34 students in 10th grade. A battery of Piagetian-type tasks were individually and randomly administered to each subject. Seven tasks examined projective spatial conceptual abilities, and three tasks examined Euclidean abilities. The same battery of tasks was again administered to the same subjects during November and December of 1984 when all the subjects were in the next grade, that is, 7th, 9th, and 11th. Because of attrition, the number of students tested during the second year were 33, 30, and 28, respectively. To test for significant differences between grade levels, a chi-square one-sample procedure was used. Out of a possible 50 tasks, significant differences were detected in 36 (72%). Those findings, along with an examination of the percentage of students passing each task, support the notion of sequential development of spatial conceptual abilities. 相似文献
978.
Family Characteristics and Posttraumatic Stress Disorder: A Follow-Up of Israeli Combat Stress Reaction Casualties 总被引:1,自引:0,他引:1
ZAHAVA SOLOMON PH.D. MARIO MIKULINCER PH.D. BATIA FREID M.A. YOHANAN WOSNER PH.D. 《Family process》1987,26(3):383-394
This study assessed the role of family status and family relationships in the course of combat-related posttraumatic stress disorder (PTSD). The sample consisted of 382 Israeli soldiers who suffered a combat stress reaction episode during the 1982 Lebanon War. Results showed that one year after the war married soldiers had higher rates of PTSD than did unmarried soldiers. Furthermore, higher rates of PTSD were associated with low expressiveness, low cohesiveness, and high conflict in the casualties' families. Theoretical, methodological, and clinical implications are discussed. 相似文献
979.
Families of Adolescent Drug Abusers Are “Rigid”: Are These Families Either “Disengaged” or “Enmeshed,” or Both? 总被引:2,自引:0,他引:2
The FACES instrument, based on Olson's Circumplex Model of family functioning, was administered to 96 adolescent drug-abuse clients and their parents. The majority of these families categorized themselves as "disengaged" (rather than "enmeshed") on the cohesion dimension, and as "rigid" (rather than "chaotic") on the adaptability dimension. These findings were unexpected as they were substantially different from published findings on families with other types of problems. Family therapists, utilizing Olson's Clinical Rating Scale for the Circumplex Model, characterized significantly more of these same families as "enmeshed," rather than "disengaged." Possible explanations for the difference between the therapists' perceptions and the families' self-perceptions are discussed. 相似文献
980.
Richard Schulz Connie A. Tompkins Dan Wood Susan Decker 《Journal of applied social psychology》1987,17(4):401-428
The emphasis of much of the existing research on social support-health relationships has been on the availability and impact of support on the recipient, but social psychologists have paid little attention to the costs to the caregiver of providing that support. In an earlier study (Schulz & Decker, 1985), we found that the long-term coping of individuals experiencing chronic disability as a result of spinal-cord injury was facilitated by the availability of a primary support person, or caregiver. In this study we examined the determinants of well-being of the primary caregiver of the middle-aged and elderly spinal-cord-injured persons. Psychological well-being, life satisfaction, and depression were the dependent measures. The availability of social support, social contact, and feelings of control over one's life were important determinants of caregiver well-being, even after controlling for health and income. In addition, the amount of time spent each day assisting the disabled person was a strong independent correlate of depression, and the extent to which the caregiver felt burdened by the victim was significantly and negatively related to life satisfaction. These results are discussed in the context of a comprehensive stress-coping model. Since data were available from both disabled individuals and their primary support persons, we had the unique opportunity to compare the perspectives of both those giving and receiving daily care. We found no relationship in levels of psychological well-being and depression reported by the disabled person and caregiver; however, caregivers attributed to the victims affective levels similar to their own. 相似文献