CPI Study Guide 2026
Everything you need to pass the CPI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
CPI exam key facts
📋 CPI Exam Format at a Glance
📚 CPI Topics to Study (39)
✍️ Sample CPI Questions & Answers
1. A 'control recording' made outside the active investigation area is used primarily to:
A control recording made in a neutral location captures the ambient sound profile of typical environmental conditions, allowing reviewers to identify what is 'normal' versus anomalous.
2. An investigator discovers that a full-spectrum image shows a repeating grid pattern of bright dots. What is the MOST likely technical cause?
Dead or stuck pixels are sensor defects that consistently appear as fixed bright or colored dots in the same location across every image taken with that camera.
3. Why should environmental conditions be logged during evidence review?
Environmental logs provide context and help explain or rule out natural causes for anomalies.
4. Why is using a baseline reading important before an investigation?
Baseline readings help investigators differentiate between normal environmental conditions and anomalies during the investigation.
5. An investigator uses noise reduction software and discovers a voice underneath white noise. Why should the original unprocessed file always be preserved?
Aggressive noise reduction can generate spectral artifacts that sound like voices, so preserving the original ensures any disputed EVP can be verified against the unaltered source.
6. What is 'confirmation bias' and how should a CPI investigator guard against it?
Confirmation bias leads investigators to accept evidence supporting paranormal explanations while dismissing contrary data, and it is countered by applying rigorous skeptical analysis equally to all evidence.
🎯 Free CPI Practice Tests
📖 CPI Guides & Articles
What Practice Test Geeks adds beyond an AI chat for CPI
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length CPI mock exam — 125 questions in 90 minutes with a 80% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed CPI question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable CPI cheat sheet you can print or save as a PDF.
- CPI flashcards built from the same question bank.
- Free CPI practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- paranexus.org — Exam information · verified Oct 2026
- tfuniversity.org — Score release, passing score, fees, test delivery, eligibility · verified Oct 2026