全文获取类型
| 收费全文 | 1001篇 |
| 免费 | 122篇 |
| 国内免费 | 40篇 |
专业分类
| 1163篇 |
出版年
| 2025年 | 8篇 |
| 2024年 | 19篇 |
| 2023年 | 32篇 |
| 2022年 | 32篇 |
| 2021年 | 49篇 |
| 2020年 | 66篇 |
| 2019年 | 57篇 |
| 2018年 | 68篇 |
| 2017年 | 67篇 |
| 2016年 | 55篇 |
| 2015年 | 47篇 |
| 2014年 | 47篇 |
| 2013年 | 162篇 |
| 2012年 | 24篇 |
| 2011年 | 26篇 |
| 2010年 | 13篇 |
| 2009年 | 27篇 |
| 2008年 | 35篇 |
| 2007年 | 34篇 |
| 2006年 | 42篇 |
| 2005年 | 27篇 |
| 2004年 | 30篇 |
| 2003年 | 27篇 |
| 2002年 | 16篇 |
| 2001年 | 11篇 |
| 2000年 | 14篇 |
| 1999年 | 11篇 |
| 1998年 | 7篇 |
| 1997年 | 11篇 |
| 1996年 | 11篇 |
| 1995年 | 15篇 |
| 1994年 | 5篇 |
| 1993年 | 9篇 |
| 1992年 | 7篇 |
| 1991年 | 3篇 |
| 1990年 | 6篇 |
| 1989年 | 2篇 |
| 1988年 | 4篇 |
| 1987年 | 4篇 |
| 1986年 | 1篇 |
| 1985年 | 14篇 |
| 1984年 | 3篇 |
| 1983年 | 5篇 |
| 1982年 | 1篇 |
| 1981年 | 1篇 |
| 1979年 | 1篇 |
| 1978年 | 2篇 |
| 1977年 | 1篇 |
| 1976年 | 2篇 |
| 1975年 | 2篇 |
排序方式： 共有1163条查询结果，搜索用时 0 毫秒
901.
In this longitudinal study, 83 parents of infants between 3 and 12 months completed questionnaires assessing demographic information, infant temperament, and maternal depression. When these children were at least 18 months of age, parents completed follow‐up questionnaires assessing toddler temperament and depression‐like symptoms. We were primarily interested in the contributions of infant temperament and maternal depression to toddler depressive problems, and the analytic strategy involved controlling for toddler temperament in order to isolate the influence of infancy characteristics. The findings indicated that lower levels of infant regulatory capacity and greater severity of maternal depression were predictive of toddler depression‐like symptoms. Moderator effects of infant temperament were also examined, with the negative affectivity * maternal depression interaction emerging as significant. Follow‐up analyses indicated that the risk for early manifestations of depression was attenuated for children with lower negative affectivity in infancy and parents who reported lower levels of their own depressive symptoms; conversely, children exhibiting higher infant negative emotionality had higher levels of depression‐like symptoms as toddlers, regardless of their parents' level of depression. The present findings further suggest that parental depressive symptoms need not be ‘clinically significant’ to predict toddler affective problems. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
902.
Gray's reinforcement sensitivity theory (RST) describes two important personality constructs; sensitivity to reward and sensitivity to punishment. In two studies, we examine whether these constructs can be considered dispositions to work stress. Results of Study 1 (N = 105 employees in different occupations) indicated that employees with strong punishment sensitivity reacted more strongly to work stressors than others. This idea was confirmed in a longitudinal design in Study 2. Reward sensitivity was unrelated to stress in both studies. Overall, results strongly support the idea that punishment sensitivity is a dispositional source of work stress. Results further confirm that RST and its derived personality measures can contribute to theorizing about personality–environment interactions in a highly relevant daily setting, namely the working environment. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
903.
Three pigeons discriminated between two sample stimuli (intensities of red light). The difficulty of the discrimination was varied over four levels. At each level, the relative reinforcer magnitude for the two correct responses was varied across conditions, and the reinforcer rates were equal. Within levels, discriminability between the sample stimuli did not change systematically as reinforcer magnitude varied. Across levels, the sensitivity of behavior to changes in the reinforcer-magnitude ratio decreased as the discriminability between the sample stimuli increased. Subsequent analysis showed that this relation was limited to performance following only one of the sample stimuli, the dim red light that remained constant across all conditions. Extant behavioral models of signal detection cannot easily accommodate these results. 相似文献
904.
T. Anne Richards Judith Wrubel Jenna Grant Susan Folkman 《Journal of religion and health》2003,42(3):201-219
905.
Rosenblatt JS 《Scandinavian journal of psychology》2003,44(3):265-271
An outline of the evolution of parental care among the vertebrates is presented, leading to a characterization of critical features of parental care among the mammals and birds. Among the lower vertebrates (fishes, amphibia) and reptiles there are a variety of patterns of parental care. These can be divided into those that involve parental behavior and those that are nonbehavioral. Among extant species, parental behavior is not the predominant form of parental care, although it is present in many species of fish, frog and reptile. Nonbehavioral patterns of parental care predominate and are equally effective as parental behavior. Parental behavior is based on reciprocal stimulus interaction (trophallaxis) between the parent and the offspring and includes behavior directed at the nest, eggs, and developing young. Among lower vertebrates and reptiles there are increases in the complexity and completeness of parental behaviors but only among the mammals and birds has parental behavior been elaborated as the only form of parental care. Critical characteristics of mammalian parental behavior are: simultaneous onset of birth, lactation, and maternal care, rapid formation of an attachment of the mother to her offspring, synchrony in the behavioral interaction between mother and young during their development until weaning, and the significance of the mother-offspring unit as the basis of social organization. Among birds there is the period of egg incubation in the nest preceding hatching of the young, in addition to the above characteristics of mammals, but the mother-offspring unit is not the basis for social organization. 相似文献
906.
This paper deals with the multi‐criteria Weber (minisum) problem. Several new solution concepts are introduced, related to ideas of equilibrium between the different aspects covered by the objectives. Structural results are presented characterizing the proposed solution sets and showing the relationships existing with the efficient sets in the point objective location problem. Also, algorithms to solve this problem for the polyhedral norm case are developed. The proposed approach is more general than previously studied on multi‐criteria location problems and is particularly applicable in the real world when different scenarios must be compared. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
907.
Catherine S. Tamis-LeMonda 《Infant and child development》1996,5(4):167-171
Over the past three decades, numerous investigators have stressed the importance of maternal sensitivity in children's social and cognitive development. The various contributors to this thematic issue take different yet complementary approaches to the definition of early maternal sensitivity, focusing on mothers' responsiveness, joint topic focus with child, affect, involvement and structuring of the physical and social environments of the child. The populations represented in these writings are diverse, including middle-class and poorer families, children with and without special needs and families from a range of cultural groups. Individual and contextual factors are discussed as influencing the expression of maternal sensitivity and as both mediating and moderating relations between maternal sensitivity and diverse child outcomes. Together, this collection of writings underscores the multidimensional character of maternal sensitivity, the specialized nature of its influence and the relevance of studying maternal sensitivity within a comprehensive ecological framework. © 1996 John Wiley & Sons, Ltd. 相似文献
908.
Six homing pigeons were trained on a variety of concurrent variable-interval schedules in a switching-key procedure. Unlike previous work, reinforcer ratios of up to 160 to 1 and concurrent extinction variable-interval schedules were arranged in order to investigate choice when reinforcer-frequency outcomes were extremely different. The data obtained over 11 conditions were initially analyzed according to the generalized matching law, which fitted the data well. The generalized matching law was then fitted only to conditions in which the reinforcer ratios were between 1 to 10 and 10 to 1. The deviations of choice measures from the other four more extreme reinforcer-ratio conditions were significantly more towards equal choice than predicted by this second generalized matching fit. A contingency-discriminability model, which predicts such deviations, described the data more effectively than did the generalized matching law, and also correctly predicted the maintenance of responding on both alternatives when one was associated with extinction. 相似文献
909.
Leonard Shengold 《Scandinavian Psychoanalytic Review》2013,36(2):87-93
Some people are possessed by a need for, and an inordinate intensity of narcissistic promise. The prospect of entitlement can be conscious or unconscious. Being made happy (and being rescued from difficulties) is expected to be guaranteed and brought about by a current psychic representation (imago) of a parental figure from early childhood. This kind of symbiotic tie is illustrated by clinical material from a patient, and by two heroines of Ibsen's plays: Nora, from The Doll's House, and Hedda Gabler, from the play of the same name. The three women have different reactions to the non-fulfillment of what the patient called “THE PROMISE.” 相似文献
910.
This study explored how individuals who have experienced sexual assault engage in occupations that require touch. Fifty-seven participants who reported a history of sexual assault and 347 participants who did not report such a history responded to a pilot instrument which was created to analyze college students’ engagement in occupations. Results were categorized into indices to isolate different types of touch. Results suggest that there is a statistically significant difference in the way these two groups go about their daily routines of engaging in occupations, particularly those that involve passive, unexpected, social, and light touch. 相似文献