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Prior research suggests that when very simple event sequences are used, 4.5‐month‐olds demonstrate the ability to individuate objects based on the continuity or disruption of their speed of motion (Wilcox & Schweinle, 2003). However, infants demonstrate their ability to individuate objects in an event‐monitoring task (i.e., infants must keep track of an ongoing event) at a younger age than in an event‐mapping task (i.e., infants must compare information from 2 different events). The research presented here built on these findings by examining infants' capacity to succeed on an event‐mapping task with a more complex event sequence to determine if the complexity of the event interferes with their ability to form summary representations of the event, and, in short, individuate the objects. Three experiments were conducted with infants 4.5 to 9.5 months of age. The results indicated that (a) increasing the complexity of the objects' trajectories adversely affected infants' performance on the task, and (b) boys were more likely to succeed than girls. These findings shed light on how representational capacities change during the first year of life and are discussed in terms of information processing and representational capabilities as well as neuro‐anatomical development. 相似文献
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Maria Paula Magalhães Tavares de Oliveira Dartiu Xavier da Silveira Simone Villas Boas de Carvalho Silvia Teresa Collakis Juliana Bizeto Maria Teresa Araujo Silva 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2009,25(4):557-568
The purpose of this study was to examine the reliability, validity and classification accuracy of the South Oaks Gambling
Screen (SOGS) in a sample of the Brazilian population. Participants in this study were drawn from three sources: 71 men and
women from the general population interviewed at a metropolitan train station; 116 men and women encountered at a bingo venue;
and 54 men and women undergoing treatment for gambling. The SOGS and a DSM-IV-based instrument were applied by trained researchers.
The internal consistency of the SOGS was 0.75 according to the Cronbach’s alpha model, and construct validity was good. A
significant difference among groups was demonstrated by ANOVA (F
(2.238) = 221.3, P < 0.001). The SOGS items and DSM-IV symptoms were highly correlated (r = 0.854, P < 0.01). The SOGS also presented satisfactory psychometric properties: sensitivity (100), specificity (74.7), positive predictive
rate (60.7), negative predictive rate (100) and misclassification rate (0.18). However, a cut-off score of eight improved
classification accuracy and reduced the rate of false positives: sensitivity (95.4), specificity (89.8), positive predictive
rate (78.5), negative predictive rate (98) and misclassification rate (0.09). Thus, the SOGS was found to be reliable and
valid in the Brazilian population. 相似文献
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Rachael Green Clemens reviews Usage and Usability Assessment: Library Practices and Concerns, James T. Deffenbaugh reviews Metadata Fundamentals for All Librarians, and Marguerite E. Horn reviews The Accidental Systems Librarian. Serials Review 2003; 29:325–329. 相似文献
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Claudio Cruz-Cázares Cristina Bayona-Sáez Teresa García-Marco 《Journal of Engineering and Technology Management》2013,30(3):227-245
The aim of this paper is to increase our knowledge of a firm's innovative behaviour by jointly analysing its internal resources, industry characteristics and appropriability conditions as drivers of its R&D strategy selection: make, buy and make-buy. Based on panel data (1992–2005) covering 1539 Spanish manufacturing firms, results show that firms lacking organisational resources and competing in stable markets prefer the buy strategy. Firms with a high level of technological resources that are immersed in high-tech industries are prone to selecting the make-buy strategy. Internationalised firms with high levels of appropriability prefer the make strategy. 相似文献
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