全文获取类型
收费全文 | 204篇 |
免费 | 5篇 |
出版年
2023年 | 5篇 |
2020年 | 6篇 |
2019年 | 3篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 8篇 |
2015年 | 2篇 |
2014年 | 6篇 |
2013年 | 29篇 |
2012年 | 4篇 |
2011年 | 10篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 3篇 |
2004年 | 8篇 |
2003年 | 6篇 |
2001年 | 6篇 |
2000年 | 6篇 |
1999年 | 7篇 |
1997年 | 4篇 |
1993年 | 2篇 |
1992年 | 6篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1968年 | 2篇 |
1967年 | 2篇 |
1966年 | 1篇 |
1963年 | 1篇 |
1962年 | 1篇 |
1957年 | 1篇 |
1951年 | 1篇 |
排序方式: 共有209条查询结果,搜索用时 15 毫秒
121.
122.
123.
Animal Cognition - Mother cats can discriminate between their own and alien kittens using kittens’ body odour. Here we ask whether they can also distinguish between body odours of kittens... 相似文献
124.
The mass‐casualty school shooting incidents in recent years have heightened concern about the safety of U.S. schools and prompted responses that, in many cases, have centered mainly on bolstering security on school campuses. Some researchers have concluded, however, that the most effective prevention efforts are those that are more comprehensive in scope. This article explores selected spiritual, religious, and family value factors that research has indicated may play an important protective role in strengthening resilience in young people and minimizing at‐risk behavior that may be associated with school violence. 相似文献
125.
126.
127.
The purpose of this pilot study was to examine levels of depression, self-esteem, loneliness, and social support, and the relationships between these variables, among adolescent mothers participating in the New Parents Project (formerly called the Young Parents Project). The sample consisted of 21 adolescent mothers recruited from three primary health care practices in different Midwestern cities. It was found that depression scores were in the high range (CES-DC > 15) for 53% of the participants. Strong, significant relationships were found, except between depression and self-esteem. The implications for enhancement of the New Parents Project, so as to better meet the psychological needs of adolescent mothers, are discussed. 相似文献
128.
129.
Using a nonconcurrent multiple baseline design, we evaluated the effects of extinction and stimulus control on nighttime sleep disturbances exhibited by 7 infants. Results showed that frequency and duration of night wakings decreased for all subjects, with corresponding improvements reflected through changes in responses to the sleep behavior scale. Observed improvements maintained at 3 and 24 months posttreatment. 相似文献
130.