全文获取类型
收费全文 | 862篇 |
免费 | 27篇 |
国内免费 | 1篇 |
专业分类
890篇 |
出版年
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 15篇 |
2019年 | 13篇 |
2018年 | 30篇 |
2017年 | 18篇 |
2016年 | 22篇 |
2015年 | 18篇 |
2014年 | 11篇 |
2013年 | 92篇 |
2012年 | 43篇 |
2011年 | 34篇 |
2010年 | 23篇 |
2009年 | 24篇 |
2008年 | 34篇 |
2007年 | 28篇 |
2006年 | 27篇 |
2005年 | 31篇 |
2004年 | 31篇 |
2003年 | 34篇 |
2002年 | 34篇 |
2001年 | 21篇 |
2000年 | 12篇 |
1999年 | 12篇 |
1998年 | 19篇 |
1997年 | 19篇 |
1996年 | 12篇 |
1995年 | 16篇 |
1994年 | 15篇 |
1993年 | 19篇 |
1992年 | 16篇 |
1991年 | 11篇 |
1990年 | 14篇 |
1989年 | 9篇 |
1988年 | 4篇 |
1987年 | 6篇 |
1986年 | 8篇 |
1985年 | 11篇 |
1984年 | 13篇 |
1983年 | 7篇 |
1982年 | 10篇 |
1981年 | 8篇 |
1980年 | 9篇 |
1979年 | 7篇 |
1978年 | 11篇 |
1977年 | 3篇 |
1975年 | 6篇 |
1974年 | 10篇 |
1973年 | 4篇 |
1971年 | 3篇 |
排序方式: 共有890条查询结果,搜索用时 0 毫秒
251.
252.
The assessment of worry among older adults typically has involved measures designed with younger cohorts. Because of special concerns in assessing older adults, modifications to existing instruments may be necessary. Addressing equivocal factor analytic data on the Penn State Worry Questionnaire (PSWQ) among younger adults, the authors conducted confirmatory factor analyses to evaluate the generalizability of previous models to older adults with generalized anxiety disorder. Data fit poorly with established single- and two-factor models. The single-factor model was modified, resulting in the elimination of 8 items, strong fit indices, high internal consistency, adequate test-retest reliability, and good convergent and divergent validity. Further psychometric work is required to assess whether the revised model is a more parsimonious method to assess late-life anxiety. 相似文献
253.
Hughes D 《American journal of community psychology》2003,31(1-2):15-33
Recently, social scientists have become increasingly interested in the nature of communications from parents to children regarding ethnicity and race. Termed racial socialization, race-related messages to children may have important consequences for children's identity development and well-being. This study examined the frequency and correlates of two dimensions of racial socialization—messages about ethnic pride, history, and heritage (Cultural Socialization) and messages about discrimination and racial bias (Preparation for Bias)—among 273 urban African American, Puerto Rican, and Dominican parents. Parents reported more frequent Cultural Socialization than Preparation for Bias. There were no significant ethnic group differences in the frequency of Cultural Socialization. However, African American parents reported more frequent Preparation for Bias than did Dominican parents who, in turn, reported more frequent messages of this sort than did Puerto Rican parents. Ethnic identity was a stronger predictor of Cultural Socialization among Puerto Rican and Dominican parents than among their African American counterparts. In contrast, perceived discrimination experiences was a stronger predictor of Preparation for Bias among African American and Dominican parents than among Puerto Rican parents. Finally, race-related phenomenon accounted for more variance in both Cultural Socialization and Preparation for Bias among parents reporting on their behaviors with children 10–17 years old as compared to parents reporting on their behaviors with children 6–9 years old. 相似文献
254.
Celebrity worship is a form of parasocial interaction in which individuals become obsessed with 1 or more celebrities, similar to an erotomanic type of delusional disorder. Drawing on the cognitive factors implicated in erotomania, the authors hypothesized that celebrity worshippers might be expected to exhibit verbal, visuospatial, and cognitive deficits related to flexibility and associative learning. This general hypothesis was tested in a sample of 102 participants who completed the Celebrity Attitude Scale (L. E. McCutcheon, R. Lange, & J. Houran, 2002), the Entertainment-Social, Intense-Personal, and Borderline Pathological subscales, and 6 cognitive measures that included creativity (verbal), crystallized intelligence, critical thinking, spatial ability, and need for cognition. The results were consistent with predictions and suggest that cognitive deficits only help facilitate an individual's susceptibility to engage in celebrity worship. The results are discussed in terms of the multivariate absorption-addiction model of celebrity worship. 相似文献
255.
We examined the development of infants' regional electrocortical (EEG) and heart rate (ECG) responses to affective musical stimuli during the first 12 months of post-natal life. Separate groups of infants were seen at 3 (n=33), 6 (n=42), 9 (n=52), and 12 (n=40) months of age at which time regional EEG and ECG responses were continuously recorded during a baseline condition and during the presentation of three orchestral pieces that were known to vary in affective valence and intensity (happy, sad, fear). Overall, there were two important findings. First, we found that although the overall amount of EEG 4-8 Hz power increased between 3 and 12 months, the distribution of EEG power changed across age, with the younger infants (3- and 6-month-olds) showing no difference between frontal and parietal regions, but the older infants (9- and 12-month-olds) showing relatively more activation at frontal than at parietal sites. This development likely reflects the maturation of frontal lobe function. Second, we found that the presentation of affective music significantly increased brain activity at 3 months of age, had seemingly little effect at 6 and 9 months, and significantly attenuated brain activity at 12 months. Findings suggest that there is a clear developmental change in the effect of music on brain activity in the first year, with music having a "calming" influence on infants by the end of the first year of life. 相似文献
256.
Gender Differences in Adolescent Depression: Gender-Typed Characteristics or Problem-Solving Skills Deficits? 总被引:1,自引:0,他引:1
This study explored gender differences indepressive symptoms during adolescence in relation withgender-typed characteristics, problem-solving abilities,and stressful life events. Participants were 306 white French-speaking adolescents (142 men and164 women) from upper middle-class families enrolled ina high school in the Trois-Rivières area ofQuebec. Participants ranged in age from 14 to 17 years, with a mean age of 15.3 years (SD = .95). Theycompleted the French versions of the Beck DepressionInventory (BDI), the Bem Sex Role Inventory (BSRI), theProblem-Solving Inventory (PSI), and the Life Event Questionnaire (LEQ) during a regularclass. Depressed participants distinguished themselvesfrom nondepressed participants on all variables exceptfor expressivity. Instrumentality was negatively correlated with depression for boys and for thetotal sample. Scores on all three subscales of the PSIcorrelated with depression, and with scores on the LEQ,with the exception of In the Last Yearsubscale for boys. A path analysis was conducted usingscores on the BDI as the dependent variable. Subjectiveproblem-solving abilities act as a mediating variablebetween instrumentality and depression. Instrumentality, expressivity, and problem-solving abilitiesexplained a significant portion of the variance of theBDI. 相似文献
257.
258.
259.
Kim Killu Diane M. Sainato Carol A. Davis Heidi Ospelt Jennifer Neely Paul 《Journal of Behavioral Education》1998,8(3):347-368
A high-probability request sequence was implemented with three preschool children with developmental delays within their classroom during typical activities. A multiple baseline design across subjects was used to evaluate the effects of the high-probability request sequence on compliant responding to low-probability requests and the occurrence of disruptive behavior. Results of the study indicate that the use of the high-probability request sequence was effective in increasing compliant responding to low-probability requests delivered by two different trainers for all children. No increases in disruptive behavior were noted as a result of using the high-probability request sequence. When the high-probability request sequence was withdrawn, compliant responding to low-probability requests was maintained for all children across time and in different settings. 相似文献
260.
Diane M. McKnight 《Science and engineering ethics》1998,4(1):97-113
Formalizing shared ethical standards is an activity of scientific societies designed to achieve a collective goal of promoting
ethical conduct. A scientist who is faced with the choice of becoming a “whistleblower” by exposing misconduct does so in
the context of these ethical standards. Examination of ethics policies of scientific societies which are members of the Council
of Scientific Society Presidents (CSSP) shows a breadth of purpose and scope in these policies. Among the CSSP member societies,
some ethics policies chiefly present the ethical culture of the community in an educational context and do not have enforcement
procedures. Other policies are more comprehensive and include standards for certification, procedures for addressing ethical
issues, and established sanctions. Of the 36 member societies of CSSP that have developed a code or adopted a code of another
professional society, 18 specifically identified a responsibility to expose ethical misconduct, demonstrating an acknowledgment
of the possible critical role of the whistleblower in addressing ethical issues. Scientific societies may revise their ethics
codes based upon experience gained in addressing cases of ethical misconduct.
In most cases, the action of a whistleblower is the initial step in addressing an ethics violation; the whistleblower may
either be in the position of an observer or a victim, such as in the case of someone who discovers that his or her own work
has been plagiarized. The ethics committee of a scientific society is one of several possible outlets through which the whistleblower
can voice a complaint or concern. Ethical violations can include falsification, fabrication, plagiarism and other authorship
disputes, conflict of interest and other serious violations. Commonly, some of these violations may involve publication in
the scientific literature. Thus addressing ethical issues may be intertwined with a scientific society’s role in the dissemination
of new scientific results. For a journal published by a scientific society, the editor can refer at some point to the ethics
committee of the society. Whereas, in the case of a journal published by a commercial publisher, the editor may be without
direct support of the associated scientific community in handling the case. The association of a journal with a scientific
society may thus direct a whistleblower towards addressing the issue within the scientific community rather than involving
the press or talking to colleagues who may gossip. A formal procedure for handling ethics cases may also discourage false
accusers. Another advantage of handling complaints through ethics committees is that decisions to contact home institutions
or funding agencies can be made by the ethics committee and are not the responsibility of the whistleblower or the editor
of the journal. The general assessment is that the establishment of ethics policies, especially policies covering publication
in society journals, will promote a culture supportive of whistleblowers and discouraging to false accusers.
An earlier version of this paper was presented at the symposium entitled “Damned If You Do, Damned If You Don’t: What the
Scientific Community Can Do About Whistleblowing” held during the Annual Meeting of the American Association for the Advancement
of Science, Seattle, Washington, 15 February, 1997. 相似文献