Cracking the Code of Aging Memory: Abstract Figures vs. Non-words

Published on June 20, 2022

Our memory is like a complex puzzle, and as we age, some pieces may start to go missing. The study delved into how the aging process impacts our ability to remember unfamiliar abstract figures and non-words. Using different memory strength levels, researchers found that older adults struggled more with correctly identifying new items and discriminating between strongly and weakly embedded abstract figures. Interestingly, the older participants showed no age-related differences when it came to non-words. These findings align with previous research on age-related impairment in new item recognition and support the idea that older adults have difficulty with perceptual encoding. It also suggests that environmental support could play a crucial role in reducing age effects on memory. The stimulus-dependent nature of age effects on discriminability further highlights the complexity of memory processes in aging. To uncover more about this fascinating subject, check out the full article!

Age-related memory problems posit a growing concern in our society. This study investigated the impact of age and memory strength on recognition memory of pre-experimentally unfamiliar abstract figures and non-words. We applied a three-phase old/new recognition memory paradigm and manipulated memory strength as a function of the Levels of Processing (deep vs. shallow) and repetition. Older adults relative to the young showed impairment in the correct identification of new items. As indicated by the lower discriminability indexes, the older adults also had difficulties discriminating the strongly (drawn/semantically processed) and the weakly (studied) embedded abstract figures but not the non-words. Age-related differences in reaction times were only evident with the abstract figures. Finally, our results revealed that the recognition performance was equally affected by memory strength in both age groups. The current findings agree with previous research on age-related impairment in new item recognition, which can be attributed to misrecollection and decreased sensitivity to novelty in the older adults than the young. The detected age effects on the discriminability of the drawn and studied abstract figures agree with the age-related impairment in the perceptual encoding hypothesis and support the notion related to the need for environmental support to reduce age effects. The lack of age effects with the non-words indicates that age effects on discriminability are stimulus-dependent. The current results support the notion that recognition memory in aging is only impaired under certain conditions and depends on the stimuli used.

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