How Andie's EPPP Playbook was built
v3.0 — February 2026A personalized study companion for Dr. Andie's EPPP (Examination for Professional Practice in Psychology) preparation. Built with love by Derek to help her crush the exam.
Every single question was analyzed and enriched with AI-generated explanations and metadata. This wasn't just data entry — it was deep educational engineering.
We classified how the exam tries to trick test-takers across 11 distinct trap patterns:
In February 2026, we conducted a comprehensive domain reclassification using 4-model AI consensus — fundamentally improving the accuracy and richness of every question in the bank.
🔑 Key Findings
TRX dropped 45% — Treatment was a "dumping ground" for miscategorized questions. Many were actually Ethics, Assessment, or Cognitive-Affective.
BIO jumped 124% — Biological Bases questions were hiding in other domains. The audit surfaced them properly.
COG is the universal connector — Cognitive-Affective is the #1 secondary domain in 6 of 7 primary domains, reflecting how cognition underlies all of psychology.
Temporal Confusion dominates — This trap type appears in 32-47% of questions across all 8 domains.
Quality rating: 4/10 → 7/10 — Domain accuracy fundamentally improved through multi-model consensus.
The audit revealed how psychology domains interconnect. These are the top cross-domain pairs — questions where a secondary domain is deeply relevant:
🧠 The COG Connection
Cognitive-Affective Bases is the #1 secondary domain in 6 of 7 primary domains. This means understanding cognitive processes is essential for mastering every area of the EPPP — it's the thread that ties all of psychology together.
What would this cost if built by expert humans at market rates? Here's the breakdown:
| Category | Work | Expert Rate | Value |
|---|---|---|---|
| Content Analysis | 1,829 questions reviewed, validated, and analyzed by psychology PhD | $175/hr × 460 hrs | $80,500 |
| Rationale Writing | 1,829 detailed "why correct" explanations | $100/question | $182,900 |
| Distractor Analysis | 7,316 "why wrong" explanations (4 per question) | $25/explanation | $182,900 |
| Trap Classification | 1,829 questions classified into 11 trap types by psychometrician | $200/hr × 150 hrs | $30,000 |
| Metadata Tagging | Theorists, concepts, difficulty, cross-domain for all 1,829 | $75/hr × 300 hrs | $22,500 |
| Multi-Model AI Audit | 4 models × 2,054 questions — domain consensus and cross-domain mapping | $200/hr × 80 hrs | $16,000 |
| UI/UX Design | Custom dark theme, 7-tab interface, mobile responsive | $150/hr × 60 hrs | $9,000 |
| Frontend Development | Interactive quiz app, filtering, progress tracking | $175/hr × 100 hrs | $17,500 |
| Backend & Auth | Supabase integration, magic link auth, real-time sync | $175/hr × 40 hrs | $7,000 |
| QA & Iteration | Testing, bug fixes, content corrections, refinement | $125/hr × 40 hrs | $5,000 |
| Estimated Total Value | $553,300 | ||
Expert rates based on industry standards for psychology subject matter experts, psychometricians, and senior developers.
Privacy First
This app is built exclusively for Andie. Email whitelist ensures only she can access progress tracking. All data is encrypted in transit and at rest. Row-level security policies protect personal data at the database level.
The exam covers 8 content domains. Here's how our question bank compares to official exam weights:
| Domain | Official Weight | Our Questions | Our Coverage | Status |
|---|---|---|---|---|
| Social & Cultural Bases | 11% | 313 | 17.1% | 💪 Strong |
| Assessment & Diagnosis | 16% | 277 | 15.1% | 💪 Strong |
| Biological Bases of Behavior | 10% | 249 | 13.6% | 💪 Strong |
| Cognitive-Affective Bases | 13% | 218 | 11.9% | ✓ Good |
| Treatment & Intervention | 14% | 218 | 11.9% | ✓ Good |
| Growth & Lifespan Development | 12% | 209 | 11.4% | ✓ Good |
| Ethics & Professional Issues | 16% | 205 | 11.2% | ⚠️ Gap |
| Research Methods & Statistics | 15% | 140 | 7.7% | ⚠️ Gap |
| Total | 100% | 1,829 | 100% |
📊 Coverage Analysis
Strengths: Social & Cultural, Assessment, and Biological Bases are well-represented — all exceeding their official exam weights.
Gaps: Ethics (11.2% vs 16% exam weight) and Research Methods (7.7% vs 15% exam weight) need more questions for balanced prep.
Domain classifications validated by 4-model AI consensus (Feb 2026).
Source: ASPPB Official EPPP Blueprint (2024-2025). New integrated blueprint planned for Spring 2026.
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Built with love for Dr. Andie
You're going to crush this exam.