Summary: It’s properly established that task-irrelevant sounds deviating from an in any other case predictable auditory sequence seize consideration and disrupt ongoing efficiency by delaying responses within the ongoing process. In visible duties, bigger distraction by surprising sounds (deviance distraction) has been reported in older than in younger adults. Nonetheless, previous research primarily based this conclusion on the comparisons of absolute response instances and didn’t management for the final slowing sometimes noticed in older adults. Therefore, it stays unclear whether or not this distinction in deviance distraction between the 2 age teams displays a real impact of growing older or a proportional impact of comparable measurement in each teams. We addressed this problem through the use of a proportional measure of distraction to reanalyze the info from 4 previous research and used Bayesian estimation to generate credible estimates of the age-related distinction in deviance distraction and its impact measurement. The outcomes had been unambiguous: older adults exhibited higher deviance distraction than younger adults when controlling for baseline response pace (in every particular person research and within the mixed information set). Bayesian estimation revealed a proportional lengthening of response instances by surprising sounds that was about twice as massive in older than in younger adults (comparable to a big statistical impact measurement). An identical evaluation was carried out on the proportion of appropriate responses and produced converging outcomes. Lastly, a further Bayesian evaluation evaluating information from cross-modal and uni-modal research confirmed the selective impact of growing older on distraction within the first and never the second. General, our research reveals that older adults performing a visible categorization process do exhibit higher distraction by surprising sounds than younger adults and that this impact just isn’t explicable by age-related common slowing.