首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   54608篇
  免费   2152篇
  国内免费   15篇
  2019年   630篇
  2018年   861篇
  2017年   911篇
  2016年   914篇
  2015年   654篇
  2014年   838篇
  2013年   3989篇
  2012年   1494篇
  2011年   1591篇
  2010年   1003篇
  2009年   954篇
  2008年   1448篇
  2007年   1376篇
  2006年   1302篇
  2005年   1144篇
  2004年   1159篇
  2003年   1079篇
  2002年   1132篇
  2001年   1550篇
  2000年   1470篇
  1999年   1144篇
  1998年   612篇
  1997年   567篇
  1996年   553篇
  1992年   984篇
  1991年   940篇
  1990年   916篇
  1989年   911篇
  1988年   915篇
  1987年   852篇
  1986年   912篇
  1985年   951篇
  1984年   779篇
  1983年   716篇
  1982年   576篇
  1981年   576篇
  1979年   888篇
  1978年   670篇
  1977年   570篇
  1976年   617篇
  1975年   730篇
  1974年   861篇
  1973年   922篇
  1972年   710篇
  1971年   700篇
  1970年   678篇
  1969年   714篇
  1968年   860篇
  1967年   772篇
  1966年   778篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
Health needs and concerns of male adolescents   总被引:1,自引:0,他引:1  
W J Pinch  M Heck  D Vinal 《Adolescence》1986,21(84):961-969
Lifestyle factors established within the family help determine health-care functioning. Adolescents first may be challenged to meet their own health needs as freshmen in college. A 153-item questionnaire was utilized to examine concerns in the areas of alcohol and other drug use, auto safety, weight and dieting, smoking, sexuality, coping and stress, and selection and utilization of health-care services. One hundred fifty-nine male college students responded. Major problems with alcohol use, auto safety, weight control, stress and sexuality were identified. Positive lifestyle factors that were strongly supported included regular exercise, nonsmoking, regular medical and dental checkups, and the development of some support systems to cope with stress. Health-care services designated by respondents to meet their own needs were significantly different from those services they pointed out as needed for their peers.  相似文献   
892.
This study reports on the reliability and concurrent validity of both the trait and state forms of the Multiple Affect Adjective Check List (MAACL) with a high school population, age range of 14-16 years and educational range of 9th and 10th grades (N = 403). Alphas of the four scales (anxiety, depression, hostility, and positive affect) ranged from .67 to .91. Correlations with a check-list of stress-related symptoms and an inventory of the number of extracurricular activities in which the students participated were significant and in the expected direction. Means and standard deviations on the MAACL scales were similar to those of college students. Sex differences were found on some of the scales. The findings indicate that the MAACL is sufficiently reliable and valid to warrant additional use with an adolescent population.  相似文献   
893.
894.
R E Muuss 《Adolescence》1986,21(82):257-267
Bulimia, an eating disorder, recently has emerged as a major mental health problem, especially among adolescent females. The bulimic experiences periods of compulsive binge eating followed by purges to rid the body of unwanted calories. Binges are triggered by intense emotional experiences, such as loneliness, anger, rejection, or stress. Associated features of bulimia are secretiveness, depression, drug abuse, preoccupation with body image and sexual attractiveness, and an awareness that the behavior is abnormal. The physical side effects include dental problems, inflamed esophagus, EEG abnormalities, abdominal or urinary disturbances, and changes in blood sugar level. Cognitive disturbances related to binging and purging are perfectionistic, egocentric, and distorted thinking, misconceptions about nutritional requirements, unreasonable goals and expectations, and disturbed affect. Bulimics resist treatment; however, such methods as cognitive, group, family, behavior, and drug therapy, and hospitalization appear promising.  相似文献   
895.
Studies of the variables that determine whether an adolescent is placed in the mental health or juvenile justice system for treatment have led to conflicting conclusions based on impressionistic data. The primary hypothesis of this study--that demographic variables would and personality/psychopathology variables would not differentiate into which system a youth will be placed--was supported. Adolescents were studied at intake into both the juvenile justice system and the mental health system. Data were collected on demographics (structured interviews), personality/psychopathology (MMPI), social adjustment (CAAP), and academic achievement (PIAT). A discriminant function analysis identified eight statistically significant variables which differentiated the two groups. In order of decreasing importance they are: ethnicity, gender, MMPI-depression, previous mental health history, CAAP-productivity, drug use, parental marital history, and parental religious preference.  相似文献   
896.
Recognizing people seen in events via dynamic "mug shots"   总被引:1,自引:0,他引:1  
This study examined effects of an event and dynamic mug shots on facial recognition. Witnesses saw either a film of a liquor store holdup staged by six perpetrators, slides of the same targets, or freeze-framed views from the filmed event. Slides of different facial views of targets among 12 foils, or dynamic 180 degrees mug shots of the same men, or multiple static views were administered 24 hr later in yes-no recognition tests. Recognition (d') was poorer for the same men seen in the event than in slides, but better for dynamic than for static mug shots. Nondynamic event characteristics were responsible for poor recognition of people seen in events, whereas dynamic aspects of facial transformations, not multiple views, seemed responsible for the superiority of dynamic mug shots. The implications of these results for issues of ecological validity of traditional face recognition methodology and for static feature models vs. dynamic transformation models of face recognition are discussed.  相似文献   
897.
H E Mendelberg 《Adolescence》1986,21(81):215-224
Mexican-American adolescents of migrant origin present conflicting attitudes in their selection of ideal characters and images for identification. As minority members, identification with members of outside groups appears blocked for them. At the same time, encounters with outside society seem to undermine identification processes that develop within their own group, their families, and community. This study concludes that relationships of dominance and dependence in the outside society foster inhibitions to the process of identification, and disturbances in the mechanisms of defense in the minority member. These relationships seem to interfere with the internalization and adoption of significant others' characteristics and attitudes.  相似文献   
898.
899.
900.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号