Chunking

A process by which individual pieces of an information set are broken down and then grouped together in a meaningful whole.

Cognitive Bias

A systematic error of thinking or rationality in judgment that influence our perception of the world and our decision-making ability.

Cognitive Load

The amount of mental resources needed to understand and interact with an interface.

Doherty Threshold

Productivity soars when a computer and its users interact at a pace (<400ms) that ensures that neither has to wait on the other.

Fitts’s Law

The time to acquire a target is a function of the distance to and size of the target.

Flow

The mental state in which a person performing some activity is fully immersed in a feeling of energized focus, full involvement, and enjoyment in the process of the activity.

Hick’s Law

The time it takes to make a decision increases with the number and complexity of choices.

Jakob’s Law

Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know.