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   222篇
  免费   26篇
管理学   17篇
民族学   1篇
人口学   18篇
丛书文集   1篇
理论方法论   40篇
综合类   1篇
社会学   142篇
统计学   28篇
  2023年   6篇
  2022年   2篇
  2021年   3篇
  2020年   8篇
  2019年   16篇
  2018年   20篇
  2017年   18篇
  2016年   9篇
  2015年   10篇
  2014年   12篇
  2013年   36篇
  2012年   9篇
  2011年   11篇
  2010年   7篇
  2009年   9篇
  2008年   9篇
  2007年   9篇
  2006年   4篇
  2005年   7篇
  2004年   6篇
  2003年   6篇
  2002年   6篇
  2001年   5篇
  2000年   1篇
  1999年   1篇
  1998年   3篇
  1997年   3篇
  1996年   1篇
  1993年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1975年   1篇
  1969年   1篇
排序方式: 共有248条查询结果,搜索用时 31 毫秒
1.
2.
3.
Using cluster analysis, 789 predominately Latino and African American high school youth were classified into varying academic at‐risk profiles using self‐reported levels of academic confidence, motivation to attend school, perceived family support, connections with teachers and peers, and exposure to violence. Six clusters emerged, 5 of which were identified as “at‐risk.” The clusters were examined in relation to academic stress, health status, grades, and school retention. Exposure to violence was one distinguishing feature of youth identified as most vulnerable, vulnerable, and resilient; however, youth identified as resilient recorded better academic outcomes.  相似文献   
4.
Few researchers have examined organizational variation in the adoption of workplace drug testing, but innovation theory suggests that adoption is more likely when it is compatible with an organization's values, previously introduced ideas, and needs. Using data from the 1997 National Employee Survey, this research models the effects of organizational compatibility, industry, and establishment size on the adoption of drug testing. The data reveal that compatibility, as measured by an organization's rules orientation, presence of an employee assistance program, and mechanization, is associated with the adoption of drug testing. As predicted, the adoption of drug testing varies across industries and by establishment size.  相似文献   
5.
6.
Economic recovery is longer in service‐providing economies than in goods‐producing economies. Services cannot be produced and inventoried ahead of demand; goods can. We are the first to document this macroeconomic repercussion of the sectoral shift away from the secondary sector toward the tertiary sector, that is, of deindustrialization and the rise of services. We distinguish between nontradable services and all other sectors, using U.S. state‐level employment data for post‐1960 recessions. Concerns over the endogeneity of services are addressed in two ways: by using 3‐year pre‐recession averages of sector shares, and separately by invoking instrumental variables. Our results are robust to alternative specifications. The increase in service production and deindustrialization in the United States over the last half‐century lengthens the trough‐to‐peak employment recovery from recessions by about 40%. (JEL E24, E32, L80, N12)  相似文献   
7.
The dictator and trust games are two common games used to identify the existence of social preferences. However, in many social interactions, individuals face the environments in both games simultaneously: for example we are often engaged in charitable donations to strangers, as well as reciprocal exchange with family members and colleagues. As giving in one game could be prioritised over giving in the other, it is important to have participants play both as a dictator in the dictator game and as a trustee in a trust game simultaneously. The results indicate that when the recipient in the dictator game is significantly poorer relative to the dictator, the dictator tends to return an amount to the trustor such that the trustor neither makes a loss nor profit from trusting. This suggests that the presence of a sufficiently strong incentive to make transfers as a dictator may completely crowd-out any monetary returns to trust.  相似文献   
8.
9.
10.
Gambling studies have described a “near-miss effect” wherein the experience of almost winning increases gambling persistence. The near-miss has been proposed to inflate the value of preceding actions through its perceptual similarity to wins. We demonstrate here, however, that it acts as a conditioned stimulus to positively or negatively influence valuation, dependent on reward expectation and cognitive engagement. When subjects are asked to choose between two simulated slot machines, near-misses increase valuation of machines with a low payout rate, whereas they decrease valuation of high payout machines. This contextual effect impairs decisions and persists regardless of manipulations to outcome feedback or financial incentive provided for good performance. It is consistent with proposals that near-misses cause frustration when wins are expected, and we propose that it increases choice stochasticity and overrides avoidance of low-valued options. Intriguingly, the near-miss effect disappears when subjects are required to explicitly value machines by placing bets, rather than choosing between them. We propose that this task increases cognitive engagement and recruits participation of brain regions involved in cognitive processing, causing inhibition of otherwise dominant systems of decision-making. Our results reveal that only implicit, rather than explicit strategies of decision-making are affected by near-misses, and that the brain can fluidly shift between these strategies according to task demands.  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