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| Journal Article | FZJ-2021-00066 |
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2021
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: http://hdl.handle.net/2128/27092 doi:10.1016/j.jneuroling.2020.100982
Abstract: We know that linguistic ability tends to diminish in aging. The question we addressed was whether it is selectively affected, and if so, whether aging affects sentence processing in the same way it affects other cognitive abilities. To this end, we conducted a fine-grained investigation into a critical aspect of sentences – the number of negations they contain. We studied the processing costs of multiple negations in a cross-sectional design with 105 healthy aging participants who performed a truth-value judgement task. Quantifier-containing sentences with 0, 1 or 2 negations were juxtaposed to images with arrays of blue and yellow circles. This design enabled us to assess the cost of negation from a novel perspective. In parallel, we tested these participants on standard measures of cognitive aging.In addition to the typical slowing caused by aging, and by an added negation, we found that aging effects were restricted: they did not accumulate with the number of negations. Rather, processing speed in the conditions with one negation (negative statements) were affected by aging, whereas it was unaffected in conditions with an even number (zero/two) of negations (positive statements). We conclude that aging affects negation processing in a manner determined by its total negativity value of a sentence (a k a monotonicity), not the number of negations it contains. Our findings challenge both the idea of global incremental processing-cost, and of non-specific cognitive slowing in aging. That is, the cost of processing, as well as the course of the aging of the sentence processor are constrained by highly specific linguistic considerations.
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