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Hicks Law

Decision-making slows as the number of choices increases, but simplifying options can speed it up effectively.

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Miller's Law

Use chunking to organize content into smaller clusters, making it easier for users to process, understand, and remember.

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Aesthetic Usability Effect

Visually appealing designs are perceived as easier to use and more effective, even if they’re not necessarily more usable.

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Fitts’ Law

The time it takes to take action on a target is inversely proportional to the distance to the target and directly proportional to the size of the target.

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Peak end rule

People tend to remember experiences based on their most thrilling moment and how they conclude, rather than every detail in between.

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Doherty Threshold

Users perceive a system’s response as instantaneous if it’s within 400 milliseconds (ms).

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Hofstadter’s Law

Our perception of time often exceeds the actual time it takes to complete a task.

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F Scan Pattern

The way users tend to read web pages, with more attention is usually in a F pattern.

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System Status Visibility

Immediate and clear communication between a user and a system, ensuring real-time updates on actions and responses.

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Gaze Cueing

A psychological phenomenon where people tend to follow the gaze of others.

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Tesler's law

The simpler it seems on the surface, the more complicated it is in the background.

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Goal Gradient Effect

People exert more effort to reach a goal as they get closer to it.

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Parkinson’s Law

Tasks often take longer if you have more time to do them.

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Postel's Law

Design should be adaptable to user behavior and flexible, while remaining precise in delivering information.

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Weber's Law

If something is really big or loud, you need a big change to notice it. If it’s small or quiet, even a tiny change can be noticed.

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Serial Position Effect

People have better recall of items presented at the beginning and end of a list, with those in the middle often being less memorable.

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Jakob’s Law

People feel more at ease with things that are familiar to them.

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Von Restorff Effect

Also known as the ‘Isolation Effect’ or ‘Illusionism’, suggests that items that stand out or are distinct from others are more likely to be remembered

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Zeigarnik Effect

People tend to remember incomplete or interrupted tasks more than completed ones.

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Pareto Principle

Also known as the 80/20 rule, suggests that roughly 80% of effects come from 20% of causes