Mixed Deck — All CPI Topics Flashcards

A 'control recording' made outside the active investigation area is used primarily to:

Answer: Establish a baseline of environmental sounds to distinguish from anomalous audio

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.

An investigator discovers that a full-spectrum image shows a repeating grid pattern of bright dots. What is the MOST likely technical cause?

Answer: Dead or stuck pixels on the camera sensor creating a fixed pattern of permanently lit points

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.

Why should environmental conditions be logged during evidence review?

Answer: To correlate activity with environmental changes

Environmental logs provide context and help explain or rule out natural causes for anomalies.

Why is using a baseline reading important before an investigation?

Answer: To compare normal and abnormal conditions

Baseline readings help investigators differentiate between normal environmental conditions and anomalies during the investigation.

An investigator uses noise reduction software and discovers a voice underneath white noise. Why should the original unprocessed file always be preserved?

Answer: Noise reduction algorithms can create voice-like artifacts not present in the original

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.

What is 'confirmation bias' and how should a CPI investigator guard against it?

Answer: The tendency to favor information that confirms pre-existing beliefs, guarded against by applying consistent skeptical analysis to all evidence

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.

What does a thermal imaging camera detect to produce its images?

Answer: Infrared radiation emitted by objects

Thermal cameras detect infrared radiation (heat) emitted by all objects and convert it into a visible temperature map.

Why is it important to document the temperature and humidity conditions during video evidence collection?

Answer: Condensation mist, fog breath, or thermal anomalies can create visual effects that are mistaken for apparitions

Breath condensation in cold air, water vapor, and temperature-related visual effects can appear on camera as mist or moving shapes that mimic apparitions, so environmental data allows reviewers to rule out these causes.

What characteristic distinguishes a Class C EVP from Classes A and B?

Answer: It is extremely faint, heavily disputed, and often unintelligible even after processing

Class C EVPs are the lowest quality designation—so faint or distorted that listeners routinely disagree on content, making them weak evidence.

A CPI professional encounters an unfamiliar situation while performing emf & environmental detection tools duties. What is the most appropriate first action?

Answer: Consult relevant standards, guidelines, or a qualified supervisor before proceeding

When facing unfamiliar situations in emf & environmental detection tools, the most appropriate action is to consult relevant standards, guidelines, or a qualified supervisor. This ensures safety, accuracy, and compliance while building professional knowledge.

When analyzing historical accounts of paranormal events, what is 'source bias' and why does it matter?

Answer: The inclination of a source's author to present information in a way shaped by their perspective, culture, or agenda

Source bias refers to how an author's perspective, beliefs, or agenda can shape how events are described, which investigators must account for when evaluating historical accounts of paranormal events.

Which of the following is a fundamental principle of evp classification & analysis as it applies to Certified Paranormal Investigator?

Answer: Systematic evaluation and adherence to established industry standards

A fundamental principle of evp classification & analysis in Certified Paranormal Investigator is the systematic evaluation and adherence to established industry standards, which ensures consistency, quality, and regulatory compliance across all professional activities.

An investigator notices an EVP appears only in the left channel of a stereo recording. What is the most likely mundane explanation for this single-channel anomaly?

Answer: A localized source such as a nearby investigator whispering close to one microphone capsule

A single-channel anomaly most likely indicates a sound source physically closer to one microphone capsule, such as a nearby investigator, rather than a paranormal event.

What does a chain of custody document ensure in a paranormal investigation?

Answer: That evidence is tracked from collection through analysis to prevent tampering or loss

A chain of custody document tracks every person who handles a piece of evidence, ensuring its integrity and authenticity are preserved from collection through final analysis.

Why is it important for a CPI to note the 'record creation date' versus the 'event date' when analyzing historical documents?

Answer: A document created long after an event may reflect memory errors, embellishment, or altered facts compared to contemporary accounts

Documents created long after an event may reflect memory errors, cultural embellishment, or altered narratives, making contemporary records generally more reliable than retrospective ones.

How should an investigator handle a witness who becomes increasingly convinced of paranormal activity and emotionally dependent on the investigation team?

Answer: Gently redirect the client to appropriate mental health resources if needed, and avoid reinforcing unfounded paranormal conclusions that increase distress

Ethical investigators recognize when a client's distress warrants professional mental health support and avoid reinforcing unfounded paranormal conclusions that may worsen psychological harm.

What does a 'full spectrum' camera capture that a standard consumer video camera does not?

Answer: Near-UV and near-IR light outside the visible spectrum, which some investigators believe may reveal anomalies

Full spectrum cameras have had their IR-blocking filter removed, allowing them to record near-ultraviolet and near-infrared light that standard cameras block, which some paranormal investigators believe may capture phenomena invisible to the naked eye.

What is reverse EVP analysis, and why is it considered methodologically problematic?

Answer: Playing recordings backwards to find hidden messages; problematic because reversed phonemes produce meaningless sounds the brain interprets as words via pareidolia

Reversed audio produces nonsensical phoneme combinations that the brain's pattern-recognition still assembles into perceived words, making reverse EVP highly susceptible to auditory pareidolia.

What should be done if an anomaly is suspected in footage?

Answer: Enhance and review with team consensus

Suspected anomalies should be reviewed by multiple team members to ensure objectivity and reduce bias.

What is the primary value of consulting Sanborn Fire Insurance Maps during a paranormal site investigation?

Answer: They provide detailed building footprints, construction materials, and past uses of structures

Sanborn Fire Insurance Maps show detailed building layouts, materials, and usage history, helping investigators understand a structure's full physical and functional history.