Before You Measure Anything – Concise Guide
This is a concise version of the Society for Psychical Research’s quick guide on essential steps to take before making measurements during paranormal investigations.
Purpose of Measurements
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Observe and record prevailing conditions.
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Document changes over time.
Choosing the Right Equipment
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Only measure with a clear reason (e.g., verify an experience or test a hypothesis).
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Select equipment appropriate for the variable being measured.
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Ensure the device is of suitable quality and used per manufacturer instructions.
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Know the normal and abnormal ranges for the variable being measured.
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Don’t assume similar devices operate the same way; read manuals carefully.
Placement & Usage
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Position devices/sensors optimally, guided by witness accounts or other info.
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Avoid interference from nearby objects, appliances, or your body.
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Prioritize the sensor providing the most useful data.
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Minimize hand-holding of devices whenever possible.
Preparation & Maintenance
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Read and understand the instruction manual.
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Establish a routine for regular equipment checks.
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Verify functionality before each investigation; don’t wait until the last minute.
Recording Measurements
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Record data along with precise location and time.
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Use pre-prepared forms for manual recording.
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Never guess missing data; note any changes made to the records with reasons.
Using Measurements From Others
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Treat data from witnesses or pre-installed devices the same as your own.
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Confirm equipment type, location, and time of recording.
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Check reliability, precision, and accuracy, even if results differ from your expectations.
Equipment Reliability & Settings
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Be aware of possible malfunctions due to damage, user error, or batteries.
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Verify units of measurement are consistent across devices.
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Only use equipment for its intended purpose.
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Download digital manuals for quick reference.
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