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Memory for news stories was studied in 48 young and 48 old adults (20-40 and 60-80 years of age, respectively). Three stories selected from actual news programs were presented in print, audio, and TV formats for study. Young adults recalled a higher proportion of news content than old adults and performed better on source recognition tests. Presentation of the information in a TV format led to better performance than in an audio format for both young and old adults. Hierarchical regression analysis revealed that approximately 86% of the age-related variance in news recall was mediated by measures of sensory acuity and processing speed, and commonality analysis revealed that 75% of the age-related variance was mediated jointly by acuity and speed. Findings support common-cause and generalized slowing views of memory impairment in old age.
Frieske et al. (Fri,) studied this question.