Cognitive UX Principles Lab & Interface Auditor

Extraneous Cognitive Load

74 / 100

Overload Threat

Visual Salience Entropy

0.82 H(s)

5 Competing Targets

Working Memory Strain

4 items held

Recall Penalty

Focal Dominance (Von Restorff)

0.24 saliency

Weak Call-To-Action

6 UX Principles Tuning Active Toggles

1. Selective Attention Filter Noise

Simulates banner blindness (filtering ad-like clutter) and flags change blindness risks.

Ad Filter: 20%

2. Flow State & Focus Clear Feedback

Ensures task challenge matches skill with immediate reaction confirmation.

Friction: High (4)

3. Cognitive Load Reducer Strip Non-Essential

Protects mental budget by removing low-value distractions and confusing secondary paths.

4. Working Memory (Recognition) Show Reference Data

Prevents mental scratchpad strain by presenting discount codes & cart items directly at the point of action.

5. Chunking Engine 4-Digit Chunks

Groups unbroken 16-digit data and dense forms into easily scannable visual units.

6. Von Restorff Isolation Multimodal Pop

Isolates primary CTA using distinct color, elevation, size, and icons so attention converges.

https://store.apex-commerce.io/checkout/step-3

D3 GAZE TRACKING ACTIVE

Home Catalog Deals Best Sellers Gift Cards Returns Track Order Account Community Support FAQ Blog

Order Reference & Cart

$149.00

⚠️ Requires user to hold 4 checkout details in working memory: Order #8921, promo code, billing ZIP, and security PIN.

Payment Information

Card Number (16 unbroken digits):

● System State: Waiting for final confirmation. All steps validated.

Attention & Load Telemetry D3 Math

Mental Load Breakdown Intrinsic (20) + Extraneous (74)

Intrinsic Load (Task Core) Extraneous Load (Friction)

Visual Salience Hierarchy

1. Promo Ad Banner

2. 12 Nav Links 0.26 (Compete)

3. Unbroken Card Input 0.18 (Strain)

4. Primary CTA Button 0.24 (Submerged)

Diagnosis: Attention is severely scattered across 5 competing callouts. Banner blindness causes critical coupons to be ignored while working memory retains 4 unanchored variables.

Actionable Cognitive Audit Report

Evaluation of the interface against human neuro-cognitive processing limits.

1. Selective Attention & Blindness

Ad-like promo banner creates banner blindness. Users tune out promotional shapes even when holding key checkout codes.

High Noise / Blindness Risk

2. Flow & Feedback Responsiveness

Friction is high. Lacks progress anchors and instant feedback states causing anxiety during checkout.

Flow Blocked

3. Intrinsic vs Extraneous Load

Extraneous mental load accounts for 74% of conscious bandwidth due to 12 navigation links and excessive secondary actions.

Mental Budget Depleted

4. Working Memory Scratchpad

Interface forces recall over recognition. Users must carry 4 distinct tokens across steps without in-context reference.

4 Items Held (Exceeds Limit)

5. Information Chunking

16-digit raw credit card string and crowded fields overload visual scanning rhythm.

Unchunked Streams

6. Von Restorff Focal Isolation

Primary CTA is styled identically to secondary cancel and save actions, yielding low distinctiveness (0.24).

CTA Lacks Visual Dominance