Lateral Thinking
& Logical Thinking Tests
Two validated cognitive assessments to establish the PCCI™ v2.0 baseline. Based on BRAINTEASER (Jiang et al., 2023 · EMNLP) and the Cognitive Reflection Test (Frederick, 2005).
— De Bono · PCCI™ v1.0 · 2026
🧩 Lateral Thinking Test
Based on the BRAINTEASER benchmark (Jiang, Ilievski, Ma & Sourati · EMNLP 2023 · doi:10.18653/v1/2023.emnlp-main.885). The test presents puzzles that can only be solved by thinking outside the box — defying default commonsense associations.
These are the puzzles that AI systems consistently fail at, and that expert physicians excel at in diagnostic reasoning.
📌 The obvious answer is almost always wrong — but your first non-obvious answer is often right.
📌 There are no trick questions about physics or impossible scenarios — just lateral reasoning.
📌 Take your time. After answering, read the explanation — it connects to clinical reasoning.
🔬 PCCI™ Connection — Module 6 & CLI Bonus A
🔢 Logical Thinking Test
Based on the Cognitive Reflection Test (Frederick, S. · Journal of Economic Perspectives, 2005) and validated syllogistic reasoning tasks. Measures vertical thinking — systematic, analytical, step-by-step reasoning.
This is the type of thinking AI systems perform very well. Understanding your own VTQ helps calibrate the LTQ/VTQ balance in the PCCI™ v2.0.
📌 Calculate when needed — a simple calculation is sometimes required.
📌 You may use paper and pen for calculations — this is standard psychometric protocol for analytical tests.
📌 Be honest — the value is in the calibration, not the score.
🔬 PCCI™ Connection — Module 2 & CLI Bonus C
Your Cognitive Profile
📊 Your PCCI™ v2.0 Cognitive Signature
🔬 Research Note — PCCI™ Baseline Study
These results contribute to the baseline calibration study for PCCI™ v2.0. The correlation between LTQ/VTQ scores and PCCI™ scores across radiologist populations will establish the psychometric validity of the index as a comprehensive cognitive assessment tool.
Reference protocol: Matozza F, Matozza E. PCCI™ v2.0 Validation Study — Baseline LTQ/VTQ Correlation. FSM Consulting EI & EM Consulting EI · 2026–2027.