收费全文 | 3520篇 |
免费 | 311篇 |
国内免费 | 396篇 |
2024年 | 4篇 |
2023年 | 51篇 |
2022年 | 61篇 |
2021年 | 115篇 |
2020年 | 150篇 |
2019年 | 121篇 |
2018年 | 159篇 |
2017年 | 151篇 |
2016年 | 153篇 |
2015年 | 116篇 |
2014年 | 120篇 |
2013年 | 336篇 |
2012年 | 222篇 |
2011年 | 257篇 |
2010年 | 181篇 |
2009年 | 212篇 |
2008年 | 246篇 |
2007年 | 274篇 |
2006年 | 271篇 |
2005年 | 220篇 |
2004年 | 140篇 |
2003年 | 113篇 |
2002年 | 99篇 |
2001年 | 45篇 |
2000年 | 51篇 |
1999年 | 46篇 |
1998年 | 41篇 |
1997年 | 26篇 |
1996年 | 37篇 |
1995年 | 28篇 |
1994年 | 24篇 |
1993年 | 19篇 |
1992年 | 26篇 |
1991年 | 9篇 |
1990年 | 9篇 |
1989年 | 10篇 |
1988年 | 7篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1985年 | 10篇 |
1984年 | 9篇 |
1983年 | 8篇 |
1982年 | 9篇 |
1981年 | 8篇 |
1980年 | 6篇 |
1979年 | 6篇 |
1978年 | 2篇 |
1971年 | 2篇 |
1968年 | 2篇 |
1966年 | 3篇 |
The high self-esteem (HSE) heterogeneity hypothesis provides a new research perspective for investigating differences in the quantity and quality of different types of self-esteem. The present study adopted the emotional Stroop paradigm and the odd-one-out search task to explore how individuals with different types of self-esteem process social information in self-threatening situations. The results showed that individuals with different types of self-esteem had an attentional bias toward negative information and had different attentional biases toward angry faces in self-threatening situations. Individuals with fragile HSE and low self-esteem showed facilitated attention to angry faces and had difficulty drawing attention away from them; secure HSE individuals only showed difficulty disengaging attention from angry faces.
相似文献Prenatal smoke exposure (PSE) is a risk factor for adverse outcomes in the offspring, including those affecting psychological development. However, it is uncertain whether these associations are the direct result of PSE or other confounding factors. The aim of this study was to examine the possible relationship between PSE and behavioral development in children at 7.5 years of age, considering several prenatal, neonatal and postnatal covariates. A cohort of 266 mother-child pairs was followed from the first trimester of pregnancy until the children reached 7.5 years of age. PSE was assessed using a questionnaire from prenatal clinical records and corroborated by plasma cotinine determinations in the first and second trimesters and in the cord. Mother-child pairs were classified into one of four groups: unexposed, exposed to passive smoking, first trimester active smoking only and active smoking throughout pregnancy. Child behavior was assessed using the Child Behavior Checklist for ages 6–18 and the Childhood Autism Spectrum Test. In multiple linear regression models, smoking during pregnancy was associated with higher scores in affective problems (β?=?0.298; p?=?0.004). No significant associations were found between smoking during pregnancy and externalizing problems. Findings indicate that PSE is negatively associated with behavioral development in childhood.
相似文献Apathy is common in HIV, separable from depression, and has been associated with non-adherence to antiretroviral therapy (ART). We examined the associations between apathy and critical psychological determinants of ART adherence, as per the information-motivation-behavioral model, in 85 persons living with HIV. Apathy was measured using a composite of the apathy subscale of the Frontal Systems Behavioral Scale and the vigor-activation scale of the Profile of Mood States. Independent of major depressive disorder, apathy was related at small-to-medium effect sizes with motivation to adhere and self-efficacy for health-related decision-making and medication management, but not with HIV knowledge or medication management skills. These findings suggest that apathy plays a unique role in several critical health adherence determinants and support the importance of assessment and management of apathy to maximize health outcomes among individuals with HIV disease.
相似文献