Term
Cognitive Load
Total mental effort a user spends to complete a task — split between intrinsic difficulty, extraneous interface noise, and learning.
Cognitive load is the working-memory effort a task demands. Three components stack: the intrinsic difficulty of the task itself, extraneous load from interface noise that doesn’t help (cluttered layouts, vague labels, redundant choices), and germane load from learning genuinely new concepts.
Premature-conversion interfaces inflate extraneous load. Equally salient CTAs force the user to weigh options before they have enough context to weigh anything. Vague microcopy makes them simulate the next step in their head. Unexpected form fields shift their attention away from the task.
The design moves that reduce cognitive load are concrete: one dominant action per screen, progressive disclosure of complexity, labels that name destinations, and microcopy that previews what the next step requires. Each is a refusal to make the user do mental work that the interface should do.