Pareto Principle (80/20 Rule)

A majority of effects result from a minority of inputs, such as 80% of results being driven by 20% of efforts or resources.
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Decision Making
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Focuses on key drivers of user value and impact.

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Risks neglecting less common but important use cases.

Best paired with

Progressive Disclosure
Gradual exposure highlights the most impactful options first.
Choice Architecture
Users receive structured choices that highlight key options.
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Navigation
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Task Success
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Retention
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Cognitive Load
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Usability & Accessibility

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The Study

Pareto Principle (80/20 Rule) explores how individuals' decisions and perceptions are influenced by underlying psychological mechanisms. Research on this bias has revealed its role in everyday behaviours and decision-making processes. Studies often involve experiments where participants' reactions are observed to determine the bias's impact. This understanding helps designers and marketers craft more effective, user-centric experiences.

The result

The results indicate that pareto principle (80/20 rule) significantly influences decision-making by altering perception, recall, or emotional response. These findings provide valuable insights into cognitive behaviour, informing design strategies.

Actionable tips

1.

Focus on high-impact features for efficiency.

2.

Prioritise tasks for maximum productivity.

3.

Test resource allocation for optimal results.

Ingredient pairings

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Best pairings

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Progressive Disclosure

Encourages efficiency while reducing decision fatigue.
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Choice Architecture

Reduces overwhelm while preserving decision-making power.
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Nudge

Facilitates prioritisation without restricting autonomy.
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Feedback Loop

Supports goal-oriented behaviour while avoiding wasted effort.
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Worst pairings

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Fear of Missing Out (FOMO)

Encourages extreme focus that may neglect broader benefits.
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Scarcity Principle

Exploits urgency to manipulate prioritisation.
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Default Bias

Encourages passive reliance on defaults over individual assessment.
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Authority Bias

Simplifies decision-making but reduces independent evaluation.

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