YourIq

Standardized Cognitive Assessment & Training Suite 🧠

A clinical-grade, psychometrically calibrated cognitive assessment and brain training platform. Designed with clean, minimalist aesthetics, generous typography, and zero subscription paywalls, marketing funnels, or user data harvesting.

🔗 Live Application: Standardized Cognitive Assessment — Wechsler Scale Norming

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🎯 Purpose & Vision

Most commercial cognitive test sites lock unredacted scores behind hidden monthly subscriptions or present elementary puzzles that fail to test high-range cognitive ceilings.

This platform provides:

1. Clinical Psychometric Rigor: Calibrated on the Cattell-Horn-Carroll (CHC) theory and Wechsler adult norming standard ($\mu = 100, \sigma = 15$).
2. Delayed Interference Testing: An authentic 3-step delayed memory recall framework that tests working memory trace decay under continuous problem-solving load.
3. 100% Open & Client-Side: All scoring algorithms, item randomization, and history tracking compute locally in your browser with zero trackers or server uploads.

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✨ Comprehensive Features

1. Progressive Matrix Assessment (3 Phases • 20 Core Items)

• Phase 1: Abstract & Spatial Logic (Questions 1–8): Bivariate Latin square permutations, dual-axis rotational acceleration, 3D net folding with chiral reflections, and centripetal shell stripping.
• Phase 2: Quantitative Induction & Epistemological Analogies (Questions 9–16): Second-order interleaved number series, polynomial delta matrices, and graduate-level conceptual analogies.
• Phase 3: High-Range Mensa Synthesis (Questions 17–20): Ceiling items calibrated for scores above 125 IQ, featuring Boolean line superposition (XOR) with angular drift and modular arithmetic lattices ($(R_1 \times R_2) \pmod{11} = R_3$).
• Dynamic Retesting & Freshness: Questions are dynamically sampled on each attempt from a tiered pool. Option order ($A, B, C, D$) is randomized each session to prevent rote memorization.

2. 3-Step Delayed Memory Recall Protocol

Separate from the 20 cognitive questions, candidates undergo a structured 3-phase memory interference battery:

• Step 1 (Verbal Word Trace): Candidate commits an evocative vocabulary word (e.g., LABYRINTH, OBSIDIAN, SOLSTICE) to memory before Question 1. Prompted for recall after Question 8 against morphological and semantic distractors.
• Step 2 (Alphanumeric Trace): Candidate commits an alphanumeric sequence (e.g., 8492-BX, 7319-KT) before Question 9. Tested after Question 16 against deceptive transposition foils.
• Step 3 (Compound Key Trace): Candidate commits a compound identifier (e.g., COBALT-815, PLATINUM-637) before Question 17. Tested after Question 20 to gauge resistance to retroactive cognitive interference under high-range load.
• Evaluates the Working Memory Index (WMI) and retention rate (0% to 100%).

3. Comprehensive Diagnostic Report

• Wechsler Standard Score ($\mu=100, \sigma=15$): Non-linear IRT item weighting with 95% Confidence Intervals and Standard Error of Measurement (SEM ~ 4.5).
• Interactive Gaussian Normal Distribution: Visual Bell curve with live marker placement indicating your standing relative to general population thresholds and high-IQ societies (Mensa top 2.2% at 130+).
• Domain Sub-Scales: Individual index ratings for Fluid Reasoning ($G_f$), Spatial & Visual Logic ($G_v$), Quantitative Induction ($G_q$), Pattern Speed ($G_s$), and Working Memory Retention ($G_{wm}$).
• Item-by-Item Solutions: Complete post-test review with step-by-step logic derivations.
• Printable Certificate: High-resolution performance certificate ready for print or PDF export.

4. Cognitive Training Gym

Targeted daily drills with specialized normative diagnostic reports:

• Spatial Memory Grid (Corsi Blocks): Train the dorsal visual pathway and spatial coordinate chunking across an expanding 4×4 grid.
• Working Memory Span (Forward / Reverse): Train active central executive manipulation ($G_{wm}$) with forward span and reverse sequence inversion.
• Mental Rotation Speed (Shepard-Metzler): 45-second sprint training 2D/3D rotational symmetry and parietal lobe transformation speed.
• Pattern Matrix Blitz: Inductive problem throughput under rapid 45-second clock pressure.

5. Persistent Local Storage & Session Recovery

• Active Assessment Auto-Save: In-progress assessments are continuously synchronized to browser localStorage. Pausing the test, reloading the page (F5), switching tabs, or closing the browser preserves your exact question index, answered choices, flagged items, elapsed timer, and multi-phase memory state.
• Auto-Pause Time Safeguard: On reload or tab return, the assessment safely opens in a paused state with an intuitive "Resume Assessment" action, protecting the candidate's timing score from loading delays.
• Returning Candidate Hub: The home screen automatically detects saved active sessions, offering one-click resumption or clean resets, alongside historical score badges.
• Training Gym Personal Bests: Automatically records and displays high scores across all four gym modules (Corsi block span, digit recall, rotation sprint, matrix blitz).
• Candidate Name Persistence: Retains customized names on performance certificates across browser sessions.
• 100% Privacy-Preserving: All data remains strictly within the local client browser with zero network tracking, telemetry, or server database writes.

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🛠️ Tech Stack

• Framework: React 19 + TypeScript (Strict Mode)
• Build Tool: Vite 8
• Styling: Tailwind CSS v4 + Satoshi Typography
• Icons: Lucide React
• Math / Psychometrics: Gaussian Error Function (erf), Abramowitz & Stegun approximation
• Linter: Oxlint (Oxc)

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📜 License

MIT License. Designed and maintained for open psychometric access and cognitive research.