Linear Interaction

An interface design pattern in which users engage with only one screen or task at a time, following a single sequential path rather than managing multiple overlapping windows, tabs, or concurrent contexts. Linear interaction reduces cognitive load by eliminating the need to track multiple states, remember where information is located across different windows, or manage split attention between parallel activities. Research in gerontological computing has shown that linear interaction is particularly beneficial for older adults and users with cognitive impairments, as memory retention is correlated with depth of processing — the deeper and more complex the interface hierarchy, the greater the cognitive burden. Linear interfaces typically include persistent navigation aids like history bars or breadcrumbs so users can easily see where they are and backtrack without losing their place.