摘要：SummarySmartphones touchscreen interactions may help resolve if and how real-world behavioral dynamics are shaped by aging. Here, in a sample spanning the adult life span (16 to 86 years, N = 598, accumulating 355 million interactions), we clustered the smartphone interactions according to their next inter-touch interval dynamics. There were age-related behavioral losses at the clusters occupying short intervals (∼100 ms, R2∼ 0.8) but gains at the long intervals (∼4 s, R2∼ 0.4). Our approach revealed a sophisticated form of behavioral aging where individuals simultaneously demonstrated accelerated aging in one behavioral cluster versus a deceleration in another. Contrary to the common notion of a simple behavioral decline with age based on conventional cognitive tests, we show that the nature of aging systematically varies according to the underlying dynamics. Of all the imaginable factors determining smartphone interactions, age-sensitive cognitive and behavioral processes may dominatingly shape smartphone dynamics.Graphical abstractDisplay OmittedHighlights•The timing of smartphone touchscreen interactions varies from one person to the next•A diverse range of interactions was studied by quantifying the next interval dynamics•The smartphone dynamics reflected the performance in cognitive tests and age•The way aging shapes behavior may depend on its underlying temporal dynamicsBehavioral neuroscience; Cognitive neuroscience; Computing methodology; Health technology
