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291.
选择反应作业中的反应组织 总被引:7,自引:0,他引:7
通过2-选择反应作业的两个反应复杂度不对称(不等)实验因素考察反应组织,发现在同一作业中无反应复杂度效应,而作业之间反应复杂度效应显著。这提示选择反应是选择已完成组织的反应,而不是实时地进行反应动作组织,进而引入动作模块的概念。即把反应组织视为选择动作模块过程。其实际意义是,在操作界面的优化设计中,要提高一组同时可选择操作R中的某一种操作Ri(R∈Ri|i=1,2,…,n)的绩效,其有效途径是应降低这一组操作R的平均复杂度;如果只降低Ri的复杂度,要提高其绩效收效甚微。 相似文献
292.
A Comparison of Asian American,Caucasian American,and Chinese College Students: An Initial Report 总被引:1,自引:0,他引:1
Mei Tang 《Journal of multicultural counseling and development》2002,30(2):124-134
This study of Asian American, Caucasian American, and Chinese college students examined the relationship between participants' career choices and parental influence. The results showed that the Asian American and Chinese college students were more likely than were Caucasian American students to choose Investigative occupation types (J. L. Holland, 1985) and that their choices were more likely to be influenced by their family. Este estudio de estudiantes universitarios Asiático Americanos, Caucásico Americanos, y Chinos examino la relación entre la elección de carrera de los participantes y la influencia de los padres. Los resultados mostraron que los estudiantes universitarios Asiático Americanos y Chinos fueron más probables a escojer los tipos de ocupación Investigativos (J. L. Holland, 1985) y a ser mas influenciados por su familia, que los estudiantes Caucásico Americanos. 相似文献
293.
Terry E. Duncan Susan C. Duncan Lisa A. Strycker Fuzhong Li 《Journal of psychopathology and behavioral assessment》2002,24(1):1-12
This paper presents a latent growth SEM approach for the estimation of treatment effects, and power to detect such effects, within a true experimental design setting in which subjects are randomly assigned to treatment and control conditions. Power estimation is a critical component of intervention experiment design and the testing of their results. Although researchers have become increasingly sophisticated in applying tests for statistical significance in intervention contexts, few are aware of the power of these tests. The issues raised in this paper are not new; however, reminding researchers to consider these points is important. Exactly how the researcher handles these issues will depend on the questions asked and the resources available, as well as other considerations. Discussion underscores the relationship between the reliability of a study's measures and concomitant increases in power obtained within the SEM framework. 相似文献
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In this study, the development of white matter was studied using an optimized diffusion tensor imaging (DTI) protocol in 20 normal subjects (10–40 years old). The normal development of white matter tracts was addressed by comparing the diffusion anisotropy results between two sub‐groups: eight adults (26–38 years old) and eight adolescents (13–15 years old). The difference in myelination extent between these two groups as indexed by the fractional anisotropy was identified by conducting a student t‐test of the measured diffusion anisotropy maps. Significant differences (p < 0.01) were detected in the gyrus frontalis medialis (GFM), gyrus temporalis medialis (GTM) and gyrus cinguli (GC), in addition to the developmental changes in corpus callosum. A brief overview of previous published DTI studies in developmental science and current progress in DTI techniques is also given at the end of this paper. It may be useful for readers interested in using DTI to study developmental problems but who are not familiar with the various technical aspects. 相似文献
297.
中学生厌学心理及其干预与学习效率的相关研究 总被引:17,自引:1,他引:16
本研究旨在考察两个问题:1.心理咨询是否是改变中学生厌学心理的有效途径,如果是,它能够在多大程度上改变厌学心理;2.厌学心理的改善能否有效提高中学生学习效率。本实验用问卷调查法从183名中学生中筛选出有厌学心理的学生24名。运用个体心理咨询、团体心理咨询等手段对这24名学生进行为期4个月干预、结果表明:心理咨询能够有效且明显地改善厌学心理。但要完全消除厌学心理则还需要辅以其他干预手段;随着学生厌学心理的改善,其学习效率也相应有了明显的提高。 相似文献
298.
Through a series of studies designed to explore important aspects of virtual experience, a new type of product affordances—virtual affordances—is proposed and tested empirically. In addition, the existing geometric and material product taxonomy is extended to include mechanical products within the classification structure. Utilizing these new concepts, 3‐D product visualization is compared with traditional 2‐D product representations and television advertising. The results largely support the proposition that 3‐D product visualization is capable of influencing brand attitude and purchase intention for geometric and mechanical products within e‐commerce environments. 相似文献
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