# TraitTune

> Validated psychometrics engine that wraps LLMs for hyperpersonalized AI interactions. Chat with Olivia for 15 minutes, get lab-grade personality mapping, and unlock conscious connections based on scientific compatibility.

TraitTune is an AI-powered psychometric assessment platform that creates a portable, encrypted psychological profile ("psychological DNA") for each user. The profile powers hyperpersonalized AI interactions across any application. Users complete a 15–25 minute conversational assessment with an AI avatar named Olivia and receive a scientifically validated personality report covering 15 bipolar personality dimensions.

## What TraitTune Does

- **Psychological DNA Mapping**: Conversational assessment produces a structured personality profile with 3+ billion unique combinations across 15 bipolar dimensions
- **IRT/CAT Adaptive Testing**: 2-Parameter Logistic Item Response Theory (2PL IRT) with Computerized Adaptive Testing (CAT) and Bayesian updating — the same methodology used in leading psychometric research
- **AI Personalization Layer**: The personality profile acts as a "neural chip" that any LLM can read to adapt tone, suggestions, and communication style to each individual
- **Team Compatibility**: Compare and analyze profiles across teams to surface communication synergies and friction points
- **Shareable Profiles**: Users control a public profile link they can share with employers, partners, or AI systems
- **Zero-Knowledge Architecture**: Psychological data is encrypted with user-controlled keys; TraitTune employees cannot access individual profiles

## Methodology

TraitTune's assessment engine is built on:

- **Item Response Theory (IRT)**: 2-Parameter Logistic model (2PL) estimates each user's latent trait levels (θ) in real time
- **Computerized Adaptive Testing (CAT)**: Questions are selected dynamically using Fisher Information to maximize measurement precision per question
- **Bayesian Updating**: Trait estimates and confidence scores update after each response
- **Question Bank**: 2,250 calibrated core questions covering 15 personality dimensions
- **Reliability Targets**: Cronbach's Alpha >0.89, test-retest reliability >0.75
- **15 Bipolar Dimensions**: Each split into five segments, synthesizing Big Five (OCEAN), HEXACO, 16PF, PEN, and Circumplex personality models
- **Confidence Tracking**: Assessment concludes when all dimensions reach a confidence threshold — typically 15–25 questions

## Personality Dimensions

TraitTune measures 15 bipolar personality dimensions grounded in validated psychological science. The framework synthesizes insights from Big Five (OCEAN), HEXACO, 16PF, PEN Model, and Interpersonal Circumplex models into a proprietary measurement system. Each dimension is scored on a continuous scale with five granular segments, yielding over 3 billion unique profile combinations.

## Pricing

- **Free**: $0/month — 1 full psychometric assessment, basic personality report, core trait scores, PDF export
- **Pro**: $19/month (or discounted annually) — unlimited reassessments, comprehensive personality report, AI personalization tokens, team compatibility tools, advanced insights
- **Enterprise**: Custom pricing — API access, bulk assessments, team dashboards, SSO, SLA, dedicated support

## Use Cases

- **Individuals**: Self-awareness, personal development, understanding communication style
- **Teams**: Building balanced teams, reducing friction, improving collaboration
- **HR & Talent**: Candidate profiling, culture fit analysis, onboarding insights
- **Enterprises**: AI-native workflows that require a personalized user model for every customer
- **AI Developers**: Integrate the TraitTune API to give LLMs access to user psychological profiles

## Differentiators

- Not a quiz or survey — a scientifically validated psychometric instrument using IRT/CAT
- Dynamic profile that improves with retakes and tracks change over time
- Portable "psychological passport" designed to work across AI systems via API
- Zero-knowledge privacy architecture — users own their data
- Founded by an ex-Executive from SWIFT (global financial infrastructure) — banking-grade security DNA
- Targets >0.89 reliability (Cronbach's Alpha), exceeding most commercial personality assessments

## Key Pages

- [Home](https://traittune.com/) — Landing page, product overview, waiting list
- [Pricing](https://traittune.com/pricing) — Free, Pro, and Enterprise plans with full feature comparison
- [FAQ](https://traittune.com/faq) — Data security, privacy, scientific validity, methodology, AI integration
- [Assessment](https://traittune.com/assessment) — Start the AI personality assessment (requires login)
- [Dashboard](https://traittune.com/dashboard) — User profile, results, and personalization settings

## Target Audience

- Individuals seeking self-awareness and personal development
- Teams wanting to improve collaboration and communication
- HR professionals and talent managers
- Enterprises building AI-native workflows with personalized user models
- Developers integrating personality-aware AI into their products

## Technology

- Frontend: React 18 + TypeScript (Vite)
- Backend: Supabase (Postgres + Edge Functions in Deno)
- AI: OpenAI (conversational assessment, personality analysis)
- Assessment Engine: IRT (Item Response Theory), CAT (Computerized Adaptive Testing)
- Security: Zero-knowledge architecture, banking-grade encryption

## Privacy & Data

TraitTune uses zero-knowledge architecture for psychological data. Users own their data completely and can view, export, share, or delete their psychological profile at any time with one click. Even TraitTune employees cannot access individual psychological profiles. See [Privacy Policy](https://traittune.com/privacy-policy).

## Contact

- Support: support@traittune.com
- Website: https://traittune.com

## Optional

- [Full documentation (llms-full.txt)](https://traittune.com/llms-full.txt): Comprehensive technical details, architecture, API reference, and extended methodology