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221.
In this paper, the statistical significance of the contribution of variables to the principal components in principal components
analysis (PCA) is assessed nonparametrically by the use of permutation tests. We compare a new strategy to a strategy used
in previous research consisting of permuting the columns (variables) of a data matrix independently and concurrently, thus
destroying the entire correlational structure of the data. This strategy is considered appropriate for assessing the significance
of the PCA solution as a whole, but is not suitable for assessing the significance of the contribution of single variables.
Alternatively, we propose a strategy involving permutation of one variable at a time, while keeping the other variables fixed.
We compare the two approaches in a simulation study, considering proportions of Type I and Type II error. We use two corrections
for multiple testing: the Bonferroni correction and controlling the False Discovery Rate (FDR). To assess the significance
of the variance accounted for by the variables, permuting one variable at a time, combined with FDR correction, yields the
most favorable results. This optimal strategy is applied to an empirical data set, and results are compared with bootstrap
confidence intervals. 相似文献
222.
Snippe E Maters GA Wempe JB Hagedoorn M Sanderman R 《Journal of family psychology》2012,26(3):464-469
The literature on chronic diseases indicates that partner support, as perceived by patients, contributes to well-being of patients in either a positive or a negative way. Previous studies indicated that patients' and partners' perceptions of unsupportive partner behavior are only moderately related. Our aim was (1) to investigate whether discrepancies between patients' and partners' perceptions of two types of unsupportive partner behavior-overprotection and protective buffering-were associated with the level of distress reported by patients with chronic obstructive pulmonary disease (COPD) and (2) to evaluate whether the direction of the differences between patients' and partners' perceptions was associated with distress (i.e., whether patient distress was associated with greater patient or greater partner reports of unsupportive partner behavior). A cross-sectional study was performed using the data of a sample of 68 COPD patients and their spouses. Distress was assessed using the Hopkins Symptom Checklist-25. Patients' and partners' perceptions of unsupportive partner behavior were assessed with a questionnaire measuring overprotection and protective buffering. Distress was independently associated with patients' perceptions of protective buffering and discrepancies in spouses' perceptions of overprotection. Regarding the direction of the discrepancy, we found that greater partner reports of overprotection as compared with patient reports were related to more distress in COPD patients. Our study showed that patients' distress was associated not only with patients' perceptions, but also with discrepancies between patients' and partners' perceptions of unsupportive partner behavior. 相似文献
223.
Rami Paasovaara Harri T. Luomala Terhi Pohjanheimo Mari Sandell 《Journal of Consumer Behaviour》2012,11(1):11-20
Past research has shown that familiar brands can boost consumers' food taste experiences. On the other hand, more recent evidence suggests that the (in)congruity between consumer values and brand symbolism can affect the food taste perception. This study is the first one to integrate these two accounts into one single conceptual framework and to empirically evaluate their relative roles in explaining consumers' brand‐induced taste perception. Two experiments involving taste trials (blind vs brand‐cued sensory evaluation) were conducted. The first experiment analysed the brand familiarity effect, whereas the second experiment addressed also the taste perception of yogurts with differing brand symbolism amongst food consumers with distinct value orientations to find support for the (in)congruity effects. This research implies that congruity is not responsible for enhancing consumers' taste perception beyond the level that is produced by the brand familiarity. In contrast, the incongruity effect appears capable of neutralising the brand familiarity effect. Therefore, these two explanations may operate independently. More generally, this study speaks for the importance of incorporating consumer value – brand symbolism incongruity mechanism into food consumption studies; even owners' of strong food brands cannot trust the ability of their brands to boost a consumer's taste experience if there is no correspondence between his or her central values and brand symbolism. Thus, an objectively better taste is not necessarily decisive; satisfactory sensory quality can suffice if it is coupled with imaginative and daring brand marketing that delivers unique emotional and functional benefits for well‐defined food consumer target segments. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
224.
Philosophical Studies - Rae Langton famously argues that pornographic speech illocutionarily subordinates and silences women. Making good this view hinges on identifying the context relevant for... 相似文献
225.
Miia Sainio Sanna Herkama Tiina Turunen Mikko Rönkkö Mari Kontio Elisa Poskiparta Christina Salmivalli 《Scandinavian journal of psychology》2020,61(1):132-142
We examined the sustainability of the KiVa antibullying program in Finland from its nationwide roll-out in 2009 to 2016. Using latent class analyses, we identified four different patterns of implementation. The persistent schools (43%) maintained a high likelihood of participation throughout the study period. The awakened (14%) had a decreasing trend during the first years, but then increased the likelihood of program participation. The tail-offs (20%) decreased in the likelihood of participating after the third year, and the drop-offs (23%) already after the first year. The findings suggest that many schools need support during the initial years to launch and maintain the implementation of evidence-based programs; yet a large proportion of schools manage to sustain the program implementation for several years. The logistic regression analyses showed that large schools persisted more likely than small schools. Lower initial level of victimization was also related to the sustainability of the program. Finally, persistent program participation was predicted by several school-level actions during the initial years of implementing the program. These results imply that the sustainability of evidence-based programs could be enhanced by supporting and guiding schools when setting up the program during the initial implementation. 相似文献
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228.
Patricia J. Bauer Dana L. van Abbema Sandra A. Wiebe Mari Strand Cary Christina Phill Melissa M. Burch 《Applied cognitive psychology》2004,18(4):373-392
When they are tested nonverbally, even young children demonstrate long-term recall. There have been few studies of whether early memories later are verbally accessible; the results of those that exist are mixed. Inconsistencies may be due to differences in the contextual cues provided at the time of recall. In two experiments, children 13–20 months were exposed to multi-step sequences and tested for nonverbal recall after 3–6 months. At age 3 years, they were tested verbally, under varying conditions of contextual support: in the original laboratory with event-related props versus at home with photographs of the props (Experiment 1), and at home with props (Experiment 2). Children younger than 20 months at initial experience of the events did not demonstrate verbal recall. Children who were 20 months at the initial exposure recalled verbally, as long as they had physical props as cues, regardless of whether testing took place at home or in the laboratory. This research informs the conditions under which memories from very early childhood later can be recalled verbally. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
229.
Cognitive Processing - 相似文献
230.
Mari Hirano 《The Japanese psychological research》2021,63(4):277-287
This study aimed to design a program incorporating a narrative perspective that promotes resilience. A program was implemented that conveys an appreciation for the internal qualities of a familiar other person through the creation of a story about them. The experiment was conducted with 36 pairs of women; each pair had a “giver” and a “recipient.” The giver created a story that praised the “good points” of the recipient. There were significant increases in recipients' scores on measures of resilience, self-esteem, and sense of acceptance of the giver. Additionally, the use of a story can help expand the interpretative ability of receiving and expressing praise. 相似文献