全文获取类型
收费全文 | 1579篇 |
免费 | 51篇 |
出版年
2022年 | 8篇 |
2021年 | 10篇 |
2020年 | 22篇 |
2019年 | 20篇 |
2018年 | 45篇 |
2017年 | 33篇 |
2016年 | 39篇 |
2015年 | 27篇 |
2014年 | 24篇 |
2013年 | 184篇 |
2012年 | 57篇 |
2011年 | 66篇 |
2010年 | 32篇 |
2009年 | 40篇 |
2008年 | 53篇 |
2007年 | 61篇 |
2006年 | 65篇 |
2005年 | 47篇 |
2004年 | 40篇 |
2003年 | 41篇 |
2002年 | 72篇 |
2001年 | 25篇 |
2000年 | 36篇 |
1999年 | 34篇 |
1998年 | 31篇 |
1997年 | 28篇 |
1996年 | 24篇 |
1995年 | 10篇 |
1994年 | 17篇 |
1993年 | 26篇 |
1992年 | 23篇 |
1991年 | 18篇 |
1990年 | 22篇 |
1989年 | 19篇 |
1988年 | 25篇 |
1987年 | 16篇 |
1986年 | 17篇 |
1985年 | 21篇 |
1984年 | 24篇 |
1983年 | 20篇 |
1982年 | 15篇 |
1981年 | 18篇 |
1980年 | 17篇 |
1979年 | 15篇 |
1978年 | 26篇 |
1977年 | 13篇 |
1976年 | 12篇 |
1975年 | 16篇 |
1973年 | 10篇 |
1966年 | 10篇 |
排序方式: 共有1630条查询结果,搜索用时 15 毫秒
931.
The MacAndrew Alcoholism (MAC) and Sc scales of the Minnesota Multiphasic Personality Inventory (MMPI) were examined in four groups of 20 male patients. Comparisons were made among primary alcoholics, secondary alcoholics (i.e., alcoholic psychiatric patients), nonalcoholic psychiatric patients (mixed diagnoses), and conservatively defined, nonalcoholic schizophrenics. Primary alcoholics scored higher on the MAC scale than did secondary alcoholics and other groups; schizophrenics scored lower than all other groups. Primary alcoholics were lower on the Sc scale than schizophrenics but did not differ from other groups. The results support MacAndrew's (1981) distinction between primary and secondary alcoholics and suggest that the MAC scale may enhance differentiation among diagnoses other than alcoholism. 相似文献
932.
Ward C. Halstead 《The Journal of psychology》2013,147(1):177-180
Many writers have implicitly or explicitly stated that nonparametric tests are free from the assumption of homogeneity of variance. Nonparametric tests for difference in central tendencies generally involve the assumption of homogeneity of variance. The assumption of homogeneity of variance for the t test and for nonparametric tests serves the same purpose: it allows the user to draw more specific inferences when the null hypothesis is rejected. 相似文献
933.
934.
This study reports the differences in intelligence across thirty-one regions of the People's Republic of China. It was found that regional IQs were significantly associated with the percentage of Han in the population (r = .59), GDP per capita (r = .42), the percentage of those with higher education (r = .38, p < .05), and non-significantly with years of education (r = .32). 相似文献
935.
Flynn has been credited with having discovered the increase in IQs that has been reported in a number of countries during most of the twentieth century and that has come to be known as “the Flynn effect”. This paper documents and discusses a number of reports of increases in IQs that were published from 1936 onwards before the phenomenon was rediscovered by and . These early reports showed that the Flynn effect is fully present in pre-school children, does not increase during the school age years, and is greater for non-verbal abilities than for verbal abilities. 相似文献
936.
937.
938.
939.
Lynn A. Warner Na Kyoung Song Kathleen J. Pottick 《Journal of child and family studies》2014,23(4):652-665
Using data from the Client/Patient Sample Survey, a nationally representative study of outpatient mental health service utilization, the prevalence and correlates of psychotropic medication receipt for youth who live with families and in foster care are compared. The medication rate is similar for both groups, with slightly more than one-third of youth treated with medication. Additionally, when medication is prescribed, it is the sole intervention provided for close to one half of each group, and the distribution of other services received (such as clinical case management and collateral services) is similar, regardless of living situation. However, the predictors of medication use differ for the two groups. Among foster care youth, only presenting problems of depressed mood, being withdrawn, and suicidality significantly increase the odds of medication; among youth with families, sociodemographic characteristics (male gender), and a range of clinical factors (disruptive behavior disorder, presenting problems of hyperactivity and sleep disturbance, prior mental health service receipt, and inpatient or residential care referral sources) increase the likelihood of medication. The conclusion that distinct sets of factors predict medication for the two groups was reinforced by results of multivariate analyses; foster care status moderates the association between medication receipt and only one of the correlates examined (gender). Implications, limitations, and areas for future research are presented. 相似文献
940.
We examine developmental interactions between context, exploration, and word learning. Infants show an understanding of how nonsolid substances are categorized that does not reliably transfer to learning how these categories are named in laboratory tasks. We argue that what infants learn about naming nonsolid substances is contextually bound – most nonsolids that toddlers are familiar with are foods and thus, typically experienced when sitting in a highchair. We asked whether 16‐month‐old children's naming of nonsolids would improve if they were tested in that typical context. Children tested in the highchair demonstrated better understanding of how nonsolids are named. Furthermore, context‐based differences in exploration drove differences in the properties attended to in real‐time. We discuss what implications this context‐dependency has for understanding the development of an ontological distinction between solids and nonsolids. Together, these results demonstrate a developmental cascade between context, exploration, and word learning. 相似文献