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141.
Van Braeckel K Butcher PR Geuze RH Stremmelaar EF Bouma A 《Human movement science》2007,26(6):927-942
We used a modified double-step pointing task to study movement adaptations in 7- to 10-year-old typically developing children. We found that the majority (63%) were able to optimally adapt fast, goal-directed visually-guided movements to a late change in target location meeting the requirements of speed and accuracy. A minority (35%) failed to meet the requirement of accuracy resulting in a less optimal adaptation. The results showed that the ability to adapt movements optimally develops before the age of 7 years in typically developing children. Literature proposes a transition in development of motor control around the age of 8 years. The present results replicate and extend this by suggesting that this transition affects the later phases of fast, goal-directed visually-guided movements rather than the early phases, such as movement programming and acceleration. Finally, the results indicate that the optimally adapted movements were the result of a specific strategy in which a specific component of movement execution was slowed on all trials. This suggests that 7- to 10-year-old typically developing children have developed implicit knowledge about which movement components are the most efficient to adapt. 相似文献
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Marie Kjærgaard Catharina Elisabeth Arfwedson Wang Knut Waterloo Rolf Jorde 《Scandinavian journal of psychology》2014,55(1):83-89
The objective of this study is to evaluate internal consistency and psychometric properties of the Hospital Anxiety and Depression Scale (HADS), the Beck Depression inventory‐II (BDI‐II) and the Montgomery and Åsberg Depression Rating Scale (MADRS) for screening for major depressive episode (MDE) in a selected sample from a healthy population. Participants answered the BDI‐II and the HADS questionnaires and were interviewed with MADRS. The Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders (DSM)‐IV Axis I Disorders‐Clinician Version (SCID‐CV) was used to diagnose MDE. Current MDE was diagnosed in 20 (6%) of the 357 participants. All three scales including the depression sub‐scale for HADS had high area under the receiver operating characteristics curve (ROC) (AUC) (0.84–0.87), and internal consistency was also high for all scales (0.75–0.89). Optimal cut‐off for MDE was ≥ 12 for BDI‐II, MADRS ≥ 8, HADS total ≥ 9, and HADS‐D ≥ 4, which all resulted in sensitivities = 85% and specificities > 78%. Diagnostic accuracy was low on all depression scales (Cohen's kappa = 0.20–0.40). Reports of the properties of depression scales in a healthy population are limited. We found BDI‐II, HADS and MADRS to be acceptable as screening instruments for MDE in a selected sample from healthy population with recommend cut‐offs as mentioned above. 相似文献
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We propose a measure of audiovisual speech integration that takes into account accuracy and response times. This measure should prove beneficial for researchers investigating multisensory speech recognition, since it relates to normal-hearing and aging populations. As an example, age-related sensory decline influences both the rate at which one processes information and the ability to utilize cues from different sensory modalities. Our function assesses integration when both auditory and visual information are available, by comparing performance on these audiovisual trials with theoretical predictions for performance under the assumptions of parallel, independent self-terminating processing of single-modality inputs. We provide example data from an audiovisual identification experiment and discuss applications for measuring audiovisual integration skills across the life span. 相似文献
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Prevailing wisdom is that increased visibility of gay men and lesbians reduces levels of sexual prejudice, but less is known about who is more likely to ally with the gay community and how interaction with the gay community influences attitudes toward gay men and lesbians. Using data from 873 heterosexual college students in the US, we examine how alliance with the gay community, a typology which combines measures of personal contact and community contact, relates to attitudes towards gay men and lesbians. Membership in each alliance category differed by gender, race/ethnicity, size of place, traditional gender role and authoritarian attitudes, religiosity, and political conservatism. Approximately one-third of the sample are allies of the gay community with both personal contact and community contact and lower levels of sexual prejudice. By contrast, another 30 % of the sample has no contact (personal or community) and higher levels of sexual prejudice toward the gay community. We conclude that more complex models of heterosexual contact with gay community are more useful than dichotomous models for understanding differences in attitudes towards gay men and lesbians. 相似文献
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