Levitt Terry, Fugelsang Jonathan, Crossley Margaret
Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Exp Aging Res. 2006 Jul-Sep;32(3):263-95. doi: 10.1080/03610730600699118.
This study compared the relative importance (i.e., proportion of shared variance) of attentional capacity and processing speed accounts of cognitive aging to predict age differences in episodic and working memory performance. Right-handed adults (n = 100), 18 to 88 years of age, completed measures of attentional capacity (divided attention), processing speed, and episodic and working memory. The results provide little support for the predictive utility of the attentional capacity construct, independent of processing speed ability in accounting for age-specific episodic memory relations. The results are, however, consistent with the notion that attentional capacity mediates aspects of age-related working memory change.
本研究比较了认知老化的注意力容量和加工速度理论在预测情景记忆和工作记忆表现的年龄差异方面的相对重要性（即共享方差的比例）。100名18至88岁的右利手成年人完成了注意力容量（分散注意力）、加工速度、情景记忆和工作记忆的测量。研究结果几乎没有支持注意力容量结构在解释特定年龄情景记忆关系时独立于加工速度能力的预测效用。然而，结果与注意力容量介导与年龄相关的工作记忆变化这一观点一致。
