全文获取类型
收费全文 | 8702篇 |
免费 | 454篇 |
国内免费 | 5篇 |
专业分类
9161篇 |
出版年
2023年 | 57篇 |
2020年 | 167篇 |
2019年 | 101篇 |
2018年 | 142篇 |
2017年 | 207篇 |
2016年 | 235篇 |
2015年 | 184篇 |
2014年 | 192篇 |
2013年 | 1038篇 |
2012年 | 298篇 |
2011年 | 282篇 |
2010年 | 218篇 |
2009年 | 272篇 |
2008年 | 300篇 |
2007年 | 325篇 |
2006年 | 303篇 |
2005年 | 258篇 |
2004年 | 244篇 |
2003年 | 301篇 |
2002年 | 269篇 |
2001年 | 109篇 |
2000年 | 110篇 |
1999年 | 139篇 |
1998年 | 109篇 |
1997年 | 117篇 |
1996年 | 146篇 |
1995年 | 152篇 |
1994年 | 115篇 |
1993年 | 136篇 |
1992年 | 130篇 |
1991年 | 123篇 |
1990年 | 106篇 |
1989年 | 95篇 |
1988年 | 98篇 |
1987年 | 108篇 |
1986年 | 92篇 |
1985年 | 91篇 |
1984年 | 115篇 |
1983年 | 120篇 |
1982年 | 113篇 |
1981年 | 108篇 |
1980年 | 120篇 |
1979年 | 120篇 |
1978年 | 132篇 |
1977年 | 126篇 |
1976年 | 119篇 |
1975年 | 92篇 |
1974年 | 94篇 |
1973年 | 88篇 |
1972年 | 58篇 |
排序方式: 共有9161条查询结果,搜索用时 0 毫秒
241.
242.
Thirty-two mother-father-infant triads participated in a study to examine whether parents' responsiveness to their own infant's distress was affected by the infant's birth order and gender. After separating from their 10- to 11-month-old baby, one parent from each family (16 mothers and 16 fathers) was selected to hear cries that were attributed to the child. Consistent with previous findings regarding physiological reactions to crying and observations of caretaking behavior, first-time parents gave quicker and more frequent attention to their infants than did multiporous parents. Speedy intervention was related to the amount of caretaking responsibilities that parents reported they assumed and to the age at which parents believed that their infant first recognized them. The results demonstrate the importance of caretaking for promoting parental sensitivity to infant signals. 相似文献
243.
This study sought (1) to compare the relative predictive powers of job attachment and job satisfaction with respect to turnover among a sample of public employees; and (2) to examine individual and job-related influences on both attitudes. It was found that attachment was a more effective predictor of turnover than overall satisfaction (or any facet of satisfaction), even when the alternative attitude was partialled out. In addition, it was found that individual employee characteristics were more strongly related to attachment than were job characteristics, while the opposite was found for satisfaction. The findings are discussed in the light of previous evidence, and implications are drawn for research in vocational behavior. 相似文献
244.
245.
246.
247.
248.
An experiment was conducted to test the proposition that rewards undermine or enhance intrinsic interest in a task to the extent that individuals interpret their behavior as being motivated by the reward. It was predicted that when subjects were denied the opportunity to develop and confirm this attribution, rewards would not produce an undermining effect, but rather would enhance dispositions and behavior. Subjects were recruited to evaluate a new sugar-free soft drink. Two levels of incentives (reward-no reward), two levels of examination (opportunity-no opportunity), and three levels of outcome (good-neutral-poor) were employed. The results support the prediction that an incentive's effect depends on the examination opportunity. In the examination condition, rewarded subjects attributed their behavior more to external factors than did unrewarded subjects, but gave more negative product evaluations only after tasting it. In the no examination condition, there were no differences in the attributions made by rewarded and unrewarded subjects, and rewarded subjects were more positively disposed toward the product both before and after tasting it. These results are explained as a consequence of two properties of rewards, enhancement through reinforcement and undermining through discounting, and of hypothesis-testing processes. 相似文献
249.
250.