Selective Attention
The cognitive process of focusing on specific stimuli while filtering out others.
Also known as: Focused attention, Attentional filtering, Attention selection
Category: Concepts
Tags: attention, cognition, psychology, focus, perceptions
Explanation
Selective attention is the cognitive ability to focus on particular stimuli while filtering out irrelevant information. It's how you can follow one conversation at a noisy party (the 'cocktail party effect') or read despite background noise. Selective attention involves: choosing what to focus on, maintaining that focus, and suppressing competing stimuli. It operates through both enhancement (boosting relevant signals) and suppression (dampening irrelevant ones). Selective attention is limited - divided attention degrades performance. Famous demonstrations include: the gorilla experiment (intense focus causes blindness to unexpected stimuli) and change blindness studies. Factors affecting selective attention include: salience (loud, moving things capture attention), relevance (what matters gets noticed), and cognitive load (less selectivity when tired). For knowledge workers, understanding selective attention helps: design environments that support focus, recognize attention limitations, and appreciate that what you're not attending to isn't being processed.
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