全文获取类型
收费全文 | 1996篇 |
免费 | 84篇 |
出版年
2023年 | 9篇 |
2021年 | 13篇 |
2020年 | 29篇 |
2019年 | 40篇 |
2018年 | 31篇 |
2017年 | 46篇 |
2016年 | 70篇 |
2015年 | 42篇 |
2014年 | 41篇 |
2013年 | 254篇 |
2012年 | 86篇 |
2011年 | 86篇 |
2010年 | 55篇 |
2009年 | 56篇 |
2008年 | 57篇 |
2007年 | 88篇 |
2006年 | 76篇 |
2005年 | 78篇 |
2004年 | 76篇 |
2003年 | 77篇 |
2002年 | 71篇 |
2001年 | 28篇 |
2000年 | 39篇 |
1999年 | 36篇 |
1998年 | 34篇 |
1997年 | 32篇 |
1996年 | 34篇 |
1995年 | 44篇 |
1994年 | 36篇 |
1993年 | 25篇 |
1992年 | 29篇 |
1991年 | 20篇 |
1990年 | 22篇 |
1989年 | 19篇 |
1988年 | 11篇 |
1987年 | 16篇 |
1986年 | 13篇 |
1985年 | 17篇 |
1984年 | 16篇 |
1983年 | 23篇 |
1982年 | 31篇 |
1981年 | 17篇 |
1980年 | 21篇 |
1979年 | 13篇 |
1978年 | 17篇 |
1977年 | 14篇 |
1976年 | 12篇 |
1975年 | 16篇 |
1974年 | 17篇 |
1973年 | 8篇 |
排序方式: 共有2080条查询结果,搜索用时 31 毫秒
991.
Yannis Markovits Johannes Ullrich Rolf van Dick Ann J. Davis 《Journal of Vocational Behavior》2008,(3):485-489
We use regulatory focus theory to derive specific predictions regarding the differential relationships between regulatory focus and commitment. We estimated a structural equation model using a sample of 520 private and public sector employees and found in line with our hypotheses that (a) promotion focus related more strongly to affective commitment than prevention focus, (b) prevention focus related more strongly to continuance commitment than promotion focus, (c) promotion and prevention focus had equally strong effects on normative commitment. Implications of these findings for the three-component model of commitment, especially the ‘dual nature’ of normative commitment, as well as implications for human resources management and leadership are discussed. 相似文献
992.
Tolerance to effects of cocaine can be modulated by schedules of reinforcement. With multiple ratio schedules, research has shown an inverse relationship between ratio requirement and amount of tolerance that resulted from daily administration of the drug. In contrast, tolerance to the effects of cocaine on behavior under multiple interval schedules generally has developed regardless of interval value. Under interval schedules reinforcement depends on the animal making one response following a time interval. Thus, as time to respond increases, the time to reinforcement decreases. On the other hand, fixed ratio schedules require a specified number of responses to be made prior to reinforcement. Therefore, delaying the initiation of responding does not coincide with a significant decrease in the time to reinforcement. In the current experiment, 6 pigeons were trained to respond under a three-component multiple schedule, with a different tandem fixed-ratio 1 fixed-interval schedule in each component. The multiple schedule required one response, which was followed by one of three fixed-interval values (5, 15, or 60 s). Thus, the multiple schedule was interval-like because after the fixed-ratio 1, only one more response was required for reinforcement, but it was also ratio-like because the length of the pause at the beginning of each interreinforcer interval affected the time until the next reinforcer. Acute administration of cocaine generally resulted in dose-dependent decreases in responding. Chronic (i.e., daily) administration of a rate-decreasing dose resulted in tolerance patterns similar to those usually obtained with multiple ratio schedules. That is, the magnitude of tolerance was related inversely to schedule size. These results suggest that delay to reinforcement from the initial response may play a role in the development of schedule-parameter-related tolerance. 相似文献
993.
Parenting self-efficacy (PSE) has been positively linked to children's adjustment and negatively associated with maternal depression. However, most PSE research has been cross-sectional, limited to predominantly white, middle-class samples, and has not examined potential mechanisms underlying associations of PSE with children's behavior. The present study investigates: (1) how PSE changes over time, (2) the relationship between age 2 PSE and children's behavior problems 2 years later, and (3) the potential mediating role of maternal depression in relation to the association between PSE and child problem behavior. Participants are 652 ethnically and geographically diverse mothers and their children, at high risk for conduct problems. PSE increased between ages 2 and 4 and higher initial levels predicted lower caregiver-reported age 4 conduct problems after controlling for problem behavior at age 2. The relationship between PSE and later conduct problems was mediated, however, by maternal depression. These findings suggest maternal depression as a potential disruptor of caregiver confidence in early childhood, which has implications for the design and focus of parenting interventions. 相似文献
994.
Starting from the core systemic premise that humans influence each other, this paper focuses on child influences in the bidirectional parent–child relationship. Following a co‐constructionist approach on bidirectionality, meaning constructions of children and their parents concerning child influences are explored. The authors used in‐depth interviews separately with children and their parents. Phenomenological analysis shows similarities and differences in children's and parents' thinking. Both stress the difficulty and existential dimension of the subject and refer to this influence as mainly unintentional. In particular, children disentangle influence from power. Children focus on the responsiveness of their parents. Parents emphasize the overwhelming effects on their personal development. The importance of making room for constructive child influences in family therapy is acknowledged. 相似文献
995.
Ezer Kang Claude Ann Mellins Warren Yiu Kee Ng Lisa-Gaye Robinson Elaine J. Abrams 《Journal of applied developmental psychology》2008,29(3):699
Perinatal HIV infection in the US continues to evolve from a fatal pediatric illness to a chronic medical condition of childhood and adolescence. Although navigating this period is influenced by multi-leveled deprivations commonly experienced by low-income minority families, HIV alters the timing and experience of developmental milestones for many adolescents with perinatal HIV. This selective review of the growing developmental psychopathology literature and the authors' clinical work at a pediatric HIV program in Harlem, NY provide an overview of how developmental psychopathology offers an integrative framework that elucidates how autonomy, peer relationships, and self-concept evolve among 13–21 year old adolescents. This paper highlights the importance of considering influences of both perinatal HIV and the culture of poverty on adolescent development, and of adopting multilevel interventions and research to address how interactions among biologic, environmental, and HIV-related stressors (serostatus disclosure, medical treatment adherence, illness stigma) influence the development of adolescents with perinatal HIV. 相似文献
996.
Several studies have shown that anti-saccades, more than pro-saccades, are executed under executive control. It is argued that executive control subsumes a variety of controlled processes. The present study tested whether some of these underlying processes are involved in the execution of anti-saccades. An experiment is reported in which two such processes were parametrically varied, namely input monitoring and response selection. This resulted in four selective interference conditions obtained by factorially combining the degree of input monitoring and the presence of response selection in the interference task. The four tasks were combined with a primary task which required the participants to perform either pro-saccades or anti-saccades. By comparison of performance in these dual-task conditions and performance in single-task conditions, it was shown that anti-saccades, but not pro-saccades, were delayed when the secondary task required input monitoring or response selection. The results are discussed with respect to theoretical attempts to deconstruct the concept of executive control. 相似文献
997.
Few studies have examined the natural coping efforts used by suicide survivors, or have identified specific problems and needs survivors experience following the death of a significant other by suicide. In the present study, we used a newly developed needs assessment survey to examine four areas of natural coping efforts: practical, psychological, and social difficulties; formal and informal sources of support; resources utilized in healing; and barriers to finding support since the loss. Sixty-three adult survivors of suicide were recruited from suicide survivor conferences and support groups. Results indicate that participants experienced high levels of psychological distress since the suicide, including elevated symptoms of depression, guilt, anxiety, and trauma. Participants experienced substantial difficulties in the social arena (e.g., talking with others about the suicide). The majority of the sample viewed professional help as beneficial; although many informal sources of support were also valued (e.g., one-to-one contact with other survivors). Depression and a lack of information about where to find help served as barriers to help-seeking behaviors for our participants. Participants who reported higher levels of functional impairment were more likely to report higher levels of psychological distress, social isolation, and barriers to seeking help. Future research with a longitudinal and more inclusive sample is needed to build on these preliminary findings and to provide a solid foundation for evidenced-based interventions with survivors. 相似文献
998.
Ann Milliken Pederson 《Zygon》2008,43(1):57-65
What we urgently need at the beginning of the twenty‐first century is a christological vision that can shape and inform a new and powerful way of helping humankind to interpret their place within the universe. A christological vision that is unintelligible and uninteresting can have a profoundly deleterious soteriological implication: the orbit of God's saving grace will not be wide enough to encompass the universal place of humankind. Arthur Peacocke's move is clear and to the point: Only when the foundations and universal scope of God's grace are fully established for all of creation, only then can the importance of God's specific work in Jesus the Christ be established. 相似文献
999.
A theory of education requires a theory of the mind that is to be educated. Modules are the central feature of the mind of the infant. Innate learning devices, modules, prepare the infant with the following competences: language, number, theory of mind, spatial navigation, music, etc. We propose that the child be taught what evolution has prepared the child to learn. This program requires adding both modular—e.g., Theory of Mind, morality, art—as well as domain-general competences—e.g., analogies, causal analysis—to the curriculum. The program further requires revamping the presently inappropriate teaching of certain modular competences. Finally it requires correcting “evolutionary errors”—modular competences that were not ideal (see Galileo); or that, though once beneficial, have become harmful in the modern world (see imitation). This proposal is taken from [Premack, D. & Premack, A. (2003). Original intelligence. New York: Macgraw-Hill]. 相似文献
1000.
Ann Pederson 《Zygon》2004,39(4):801-812
Abstract There is a crisis of interpretation experienced by those making critical‐care decisions and creating health‐care policies and by the patients and families who make life‐and‐death decisions. For example, at both the beginning and end of life, new technologies are changing the way we define life and death. We can prolong life or hasten death in ways that we could not earlier have imagined. This crisis of interpretation demands new ways of thinking and doing. My task is to explicate how the created co‐creator can be used as a springboard to help link theological concepts with feminist concerns about two issues: interpreting the culture and practice of medicine in a new way, and explicating the ambiguity of decision making when considering issues of life and death. 相似文献