京都大学 / 新制・課程博士 / 博士(教育学) / 甲第24988号 / 教博第297号 / 新制||教||221(附属図書館) / 京都大学大学院教育学研究科教育学環専攻 / (主査)教授 齊藤 智, 教授 MANALO Emmanuel, 准教授 高橋 雄介 / 学位規則第4条第1項該当 / Doctor of Philosophy (Education) / Kyoto University / DGAM

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The intent of this thesis is to examine the psychometric properties of a complex span task (CST) developed to measure working memory capacity (WMC) using measurements obtained from a sample of 68 undergraduate students at the University of Central Florida. The Grocery List Task (GLT) promises several design improvements over traditional CSTs in a prior study about individual differences in WMC and distraction effects on driving performance, and it offers potential benefits for studying WMC as well as the serial-position effect. Currently, the working memory system is composed of domain-general memorial storage processes and information-processing, which involves the use of executive functions. Prior research has found WMC to be associated with attentional measures (i.e., executive attention) and the updating function, and unrelated to the shifting function. The present study replicates these relationships to other latent variables in measures obtained from the GLT as convergent and discriminant evidence of validity. In addition, GLT measures correlate strongly with established measures of WMC. Task reliability is assessed by estimates of internal consistency, pairwise comparisons with a cross-validation sample, and an analysis of demographic effects on task measurements.

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