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311.
Artificial neural networks applied to forecasting time series 总被引:1,自引:0,他引:1
312.
Three experiments were carried out to investigate the internal structure of a rectangular frame to test Arnheim's (1974 Art and Visual Perception, 1988 The Power of the Center) proposals about its 'structural skeleton'. Observers made subjective ratings of how well a small probe circle fit within a rectangle at different interior positions. In experiment 1, ratings of 77 locations were highest in the center, decreased with distance from the center, greatly elevated along vertical and horizontal symmetry axes, and somewhat elevated along the local symmetry axes. A linear regression model with six symmetry-related factors accounted for 95% of the variance. In experiment 2 we measured perceived fit along local symmetry axes versus global diagonals near the corners to determine which factor was relevant. 2AFC probabilities were elevated only along the local symmetry axes and were higher when the probe was closer to the vertex. In experiment 3 we examined the effect of dividing a rectangular frame into two rectangular 'subframes' using an additional line. The results show that the primary determinant of good fit is the position of the target circle within the local subframes. In general, the results are consistent with Arnheim's proposals about the internal structure of a rectangular frame, but an alternative interpretation is offered in terms of the Gestalt concept of figural goodness. 相似文献
313.
We investigated how spatial organization influences color-pair preference asymmetries: differential preference for one color pair over another when the pairs contain the same colors in opposite spatial configurations. Schloss and Palmer (2011, Attention, Perception, & Psychophysics 73 55-571) found weak figure ground preference asymmetries for small squares centered on large squares in aesthetic ratings. Here, we found robust preference asymmetries using a more sensitive forced-choice task: participants strongly prefer pairs with yellower, lighter figures on bluer, darker grounds (experiment 1). We also investigated which spatial factors influence these preference asymmetries. Relative area of the two component regions is clearly important, and perceived 3-D area of the 2-D displays (ie after the ground is amodally completed behind the figure) is more influential than 2-D area (experiment 2). Surroundedness is not required, because yellowness blueness effects were comparable for pairs in which the figure was surrounded by the ground, and for mosaic arrangements in which the regions were adjacent and separated by a gap (experiment 3). Lightness darkness effects, however, were opposite for figure ground versus mosaic organizations: people prefer figure-ground organizations in which smaller regions are lighter, but prefer mosaic organizations in which smaller regions are darker. Physiological, phenomenological, and ecological explanations of the reported results are discussed. 相似文献
314.
Many common behaviours require people to coordinate the timing of their actions with the timing of others' actions. We examined whether representations of musicians' actions are activated in coperformers with whom they must coordinate their actions in time and whether coperformers simulate each other's actions using their own motor systems during temporal coordination. Pianists performed right-hand melodies along with simple or complex left-hand accompaniments produced by themselves or by another pianist. Individual performers' preferred performance rates were measured in solo performance of the right-hand melody. The complexity of the left-hand accompaniment influenced the temporal grouping structure of the right-hand melody in the same way when it was performed by the self or by the duet partner, providing some support for the action corepresentation hypothesis. In contrast, accompaniment complexity had little influence on temporal coordination measures (asynchronies and cross-correlations between parts). Temporal coordination measures were influenced by a priori similarities between partners' preferred rates; partners who had similar preferred rates in solo performance were better synchronized and showed mutual adaptation to each other's timing during duet performances. These findings extend previous findings of action corepresentation and action simulation to a task that requires precise temporal coordination of independent yet simultaneous actions. 相似文献
315.
Ortiz Bonnín S Navarro Guzmán C García Buades E Ramis Palmer C Manassero Mas MA 《Psicothema》2012,24(2):337-342
This study presents the validity and reliability analysis of a questionnaire that assesses emotion work in the service sector. Emotion work is a term introduced by Hochschild (1983) and it refers to the expression of organizationally desirable emotions to influence the interactions with clients at work. The results show a 6-factor structure: Requirement to display Positive, Negative and Neutral Emotions, Sensitivity Requirements, Interaction Control and Emotional Dissonance. The analysis of the sub-scale scores reveals that the most frequently expressed emotions are positive, whereas negative emotions are expressed less frequently. 相似文献
316.
Baldwin EE Boudreault P Fox M Sinsheimer JS Palmer CG 《Journal of genetic counseling》2012,21(2):256-272
Empirical data on genetic counseling outcomes in the deaf population are needed to better serve this population. This study was an examination of genetics knowledge before and after culturally and linguistically appropriate pre-test genetic counseling in a diverse deaf adult sample. Individuals ≥18?years old with early-onset sensorineural deafness were offered connexin-26/30 testing and genetic counseling. Participants completed questionnaires containing 10 genetics knowledge items at baseline and following pre-test genetic counseling. The effects of genetic counseling, prior beliefs about etiology, and participant's preferred language on genetics knowledge scores were assessed (n?=?244). Pre-test genetic counseling (p?=?.0007), language (p?.0001), prior beliefs (p?.0001), and the interaction between counseling and beliefs (p?=?.035) were predictors of genetics knowledge. American Sign Language (ASL)-users and participants with "non-genetic/unknown" prior beliefs had lower knowledge scores than English-users and participants with "genetic" prior beliefs, respectively. Genetics knowledge improved after genetic counseling regardless of participants' language; knowledge change was greater for the "non-genetic/unknown" beliefs group than the "genetic" beliefs group. ASL-users' lower knowledge scores are consistent with evidence that ethnic and cultural minority groups have less genetics knowledge, perhaps from exposure and access disparities. Culturally and linguistically appropriate pre-test genetic counseling significantly improved deaf individuals' genetics knowledge. Assessing deaf individuals' prior beliefs is important for enhancing genetics knowledge. 相似文献
317.
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319.
C F Palmer R K Jones B L Hennessy M G Unze A D Pick 《The American journal of psychology》1989,102(1):17-37
What are the object properties that serve as a basis for the musical instrument classification system, and how do general and specific experience affect knowledge of these properties? In the first study, the multimodal quality of properties underlying children's and adults' perception was investigated. Subjects listened to solos and identified instruments producing the sounds. Even children who did not have experience with all the instruments correctly identified the family of instruments they were listening to. The hypothesis of the second study, that musical instrument families function as a "basic level" in the instrument taxonomy, was confirmed. Variation in the basic level with varying expertise was documented in the third study with musicians. In the fourth study, children and adults identified the source of sounds from unfamiliar objects, Chinese musical instruments. It is suggested that the concept of affordances may be relevant for understanding the importance for behavior of different levels of abstraction of category systems. 相似文献
320.
This study examined possible differential treatment by and negative attitudes of civilian male co-workers and male supervisors toward civilian female workers in traditionally male-dominated blue-collar jobs. Surveys were completed by 53 male supervisors and 327 male co-workers of four departments of a large government agency. Male supervisors indicated they would not treat female employees differently than they have treated male employees. Male co-workers, however, reported they have treated other male co-workers more favorably than they would treat female co-workers. In addition, supervisors, compared with male co-workers, reported more favorable attitudes toward female workers. 相似文献