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   602篇
  免费   20篇
  国内免费   1篇
  623篇
  2023年   5篇
  2022年   2篇
  2021年   7篇
  2020年   9篇
  2019年   9篇
  2018年   16篇
  2017年   17篇
  2016年   26篇
  2015年   16篇
  2014年   13篇
  2013年   60篇
  2012年   31篇
  2011年   28篇
  2010年   15篇
  2009年   19篇
  2008年   30篇
  2007年   24篇
  2006年   23篇
  2005年   21篇
  2004年   24篇
  2003年   22篇
  2002年   27篇
  2001年   8篇
  2000年   8篇
  1999年   13篇
  1998年   11篇
  1997年   14篇
  1996年   13篇
  1995年   13篇
  1994年   6篇
  1993年   11篇
  1992年   7篇
  1991年   6篇
  1990年   5篇
  1989年   4篇
  1988年   7篇
  1987年   5篇
  1986年   3篇
  1985年   6篇
  1984年   3篇
  1983年   3篇
  1982年   7篇
  1981年   4篇
  1980年   4篇
  1979年   3篇
  1978年   8篇
  1976年   2篇
  1975年   3篇
  1973年   1篇
  1971年   1篇
排序方式: 共有623条查询结果,搜索用时 8 毫秒
81.
Affective processing is one domain that remains relatively intact in healthy aging. Investigations into the neural responses associated with reward anticipation have revealed that older and younger adults recruit the same midbrain reward regions, but other evidence suggests this recruitment may differ depending on the valence (gain, loss) of the incentive cue. The goal of the current study was to examine functional covariance during gain and loss feedback in younger and healthy older adults. A group of 15 older adults (mean age = 68.5) and 16 younger adults (mean age = 25.4) completed a revised Monetary Incentive Delay task (rMID; Knutson, Westdorp, Kaiser, &; Hommer, 2000) while in the fMRI scanner. The rMID is a reaction time task where successful performance, either gaining a reward or avoiding a loss, is defined by hitting a button during the brief presentation of a visual target. Participants receive gain and loss anticipation cues before each trial and feedback after each trial with four possible outcomes: +$5.00, +0.00, -$5.00, and -Affective processing is one domain that remains relatively intact in healthy aging. Investigations into the neural responses associated with reward anticipation have revealed that older and younger adults recruit the same midbrain reward regions, but other evidence suggests this recruitment may differ depending on the valence (gain, loss) of the incentive cue. The goal of the current study was to examine functional covariance during gain and loss feedback in younger and healthy older adults. A group of 15 older adults (mean age = 68.5) and 16 younger adults (mean age = 25.4) completed a revised Monetary Incentive Delay task (rMID; Knutson, Westdorp, Kaiser, & Hommer, 2000) while in the fMRI scanner. The rMID is a reaction time task where successful performance, either gaining a reward or avoiding a loss, is defined by hitting a button during the brief presentation of a visual target. Participants receive gain and loss anticipation cues before each trial and feedback after each trial with four possible outcomes: +$5.00, +0.00, -$5.00, and -$0.00. Using seed-voxel partial least squares analyses, with seed voxels in the caudate and ventromedial prefrontal cortex, whole-brain functional covariance revealed that younger and older adults engage the same network of regions to support general feedback processing. However, older adults engaged two additional networks to support processing of negative feedback, gain_miss (+0), loss_miss (-$5), and loss_hit (?0), specifically. These findings are in line with theories of a positivity effect in aging and may have implications for reward-stimulus learning and decision making following performance-contingent negative feedback.  相似文献   
82.
Cheryl Buehler 《Sex roles》1988,18(5-6):247-257
Social and emotional well-being of 141 divorced mothers and 36 divorced fathers were examined. All parents had children living in their households. There were no differences between mothers' and fathers' reports of psychosomatic symptomatology, life satisfaction, life-area rankings, family cooperation, social support from relatives, and satisfaction with the contact with their former spouses. Mothers reported more health improvements since the divorce and higher levels of family esteem than fathers did. These findings are discussed in relation to the expectations associated with and the enactment of social and familial roles.This study was partially funded by the University of Minnesota Experiment Station. The author would like to thank M. J. Hogan for her support of this project and Jo Lynn Cunningham for her helpful comments on an earlier draft of this paper.  相似文献   
83.
Telehealth involves the use of information and communications technology to deliver health services to patients over distance. Canada is well suited to benefit from telehealth since many individuals live in remote, rural and isolated locations. Manitoba is the easternmost prairie province and MBTelehealth is an active Canadian program that currently has 105 sites in 73 communities. Although studies of patient satisfaction comparing telehealth to on-site clinical visits have been conducted, a comparative study of the types of genetics patients seen via these two modalities has not been performed previously. In this study we: (1) examined the uptake of telehealth in Genetics in Manitoba; (2) contrasted telehealth usage in Genetics with other clinical programs; and (3) performed a comparative study of the types of Genetics referrals seen in 2008 on-site versus via telehealth. Results indicate the uptake of telehealth is increasing and has made genetics outreach clinics unnecessary. The Program of Genetics and Metabolism is consistently one of the top ten utilizers of telehealth within the province. With respect to discipline, chi square analysis revealed the trends were not significantly different for on-site and telehealth encounters, with prenatal referrals being the most common and Hereditary Breast and Ovarian Cancer referrals being the least common. Referrals within each discipline varied depending on the need for fetal assessment and physical examination. Telehealth was utilized regularly for test results sessions across all disciplines.  相似文献   
84.
The authors explored adolescent physical fighting and weapon carrying, using in‐home interviews with 1,098 middle/high school students and their parents. Logistic regression analyses examined the relationship between youth assets and the risk behaviors while controlling for demographic information. Both demographic factors and assets were associated with no physical fighting, and 6 of 9 assets were linked to not carrying a weapon. These findings indicate that certain assets may protect youth from physical fighting and carrying a weapon.  相似文献   
85.
Perceptions of social support from family, non-family adults, and peers were examined in relation to the psychopathology reported by 220 suicidal adolescents (152 females) during a psychiatric hospitalization. Results of regression analyses showed that, among females, family support was negatively related to hopelessness, depressive symptoms, and suicidal ideation. Among males, peer support was positively associated with depressive symptoms and suicidal ideation. Across gender, more peer support was associated with more externalizing behavior problems; whereas, family support was negatively related to these problems and to alcohol/substance abuse. Paralleling normative findings, age was positively associated with peer support, and females perceived more peer support than did males. Findings extend previous research on social support to suicidal adolescents, and broaden the literature by examining extrafamilial support and a broader range of relevant psychopathology. That is, perceived social support relates to psychiatric impairment differentially by gender, and normative, age-related variations in perceptions of social support are detected even among highly impaired adolescents. Clinical implications and directions for future research are discussed.  相似文献   
86.
Koss  Mary P.  Leonard  Kenneth E.  Beezley  Dana A.  Oros  Cheryl J. 《Sex roles》1985,12(9-10):981-992
Sex Roles - Rape is an underreported and underconvicted crime. Therefore, many highly sexually aggressive men are missed by research employing judicial identification for sample selection. The...  相似文献   
87.
The relationship between hopelessness and depression in predicting suicide‐related outcomes varies based on the anticipation of positive versus negative events. In this prospective study of adolescents at elevated risk for suicide, we used two Beck Hopelessness Scale subscales to assess the impact of positive and negative expectations in predicting depression, suicidal ideation, and suicidal behavior over a 2‐ to 4‐year period. In multivariate regressions controlling for depression, suicidal ideation, and negative‐expectation hopelessness, positive‐expectation hopelessness was the only significant predictor of depressive symptoms and suicidal behavior. Clinical interventions may benefit from bolstering positive expectations and building optimism.  相似文献   
88.
Individuals with larger facial width‐to‐height ratios (FWHRs) are judged as more threatening, and engage in more threat‐related behavior, than do individuals with smaller FWHRs. Here we identified components of threat potential that are related to the FWHR. In Study 1, the FWHR was correlated positively with physical threat potential (bicep size) in women and with both physical and psychological (anger proneness) threat potential in men. Behavioral aggression was measured in a subset of these participants using the Point Subtraction Aggression Paradigm (costly aggression) and a Money Allocation Task (non‐costly aggression). Psychological (but not physical) threat potential predicted non‐costly aggression and physical (but not psychological) threat potential predicted costly aggression. In Study 2, a separate set of participants judged the anger proneness, strength, or aggressiveness of male participants photographed in Study 1. Participants’ judgements of all three characteristics were associated with the FWHR, and there were sex differences in how aggressiveness was conceptualized (for women, aggressiveness was associated with anger proneness, for men, aggressiveness was associated with strength). These results are consistent with the hypothesis that the FWHR may be an adaptation to cue the threat potential of men.
  相似文献   
89.
Alcohol consumption is the leading risk factor for morbi‐mortality in many Latin American Countries. However, epidemiologic studies are relatively scarce. Among factors such as limited research capacity, disciplinary traditions and an emphasis on psychopathology within the field of psychology, have been postulated to account for this. The aim of this article is to review epidemiologic research on alcohol in Spanish Speaking Latin American Countries, and to measure the contribution of psychology to the field. A systematic search was performed in English and Spanish using regional and international data bases. We identified 269 articles. Most focused on consumption patterns in youth, with samples from a single school and using a variety of measures. With the exception of multinational efforts like Emergency Room Collaborative Alcohol Analysis Project or those supported by World Health Organization/Pan American Health Organization, studies reviewed reflected little cross country collaboration. Mexico accounted for most of the productivity, while many countries had very few or no articles. Most research was performed by health science researchers with a small contribution from psychology, but which increased significantly over time. The results of this review provide a broad identification of patterns regarding epidemiologic research on alcohol, and demonstrate the need for national scientific policies to promote research on public health topics.  相似文献   
90.
This study is one of the first tests of key implicit claims of Hay and Nye’s theory of children’s spirituality and spiritual development. Two quasi-experimental studies tested two claims: that exposure to six conditions posited as fostering relational consciousness in a programme of spiritual formation promotes spiritual well-being; that the effect of the conditions continues after exposure ends. The results for Study One revealed that length of exposure to any of the six conditions was not a significant predictor of spiritual well-being, F(3, 179)?=?1.49, p = 0.22. Study Two results indicated that as the length of time since exposure increased so did spiritual well-being, r(38)?=?0.39, p = 0.01 at the bivariate level, and F(4, 35)?=?2.4, p = 0.06 in the regression. These results reveal a possible relationship between exposure to the six conditions and spiritual well-being.  相似文献   
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