two-process theory of attention

The two-process theory of attention, influential in psychology, distinguishes between two modes of information processing: controlled search and automatic detection. Controlled search is highly demanding of attentional capacity, is typically serial, easily altered, and under conscious control, often utilizing short-term memory. Automatic detection, conversely, operates from long-term memory, is a result of extensive learning, occurs without active control, is difficult to change, and is largely unaffected by stimulus load. This distinction helps explain phenomena like driving, where new drivers engage in controlled, conscious gear shifting, while experienced drivers perform the task automatically.1