According to wordnetweb.princeton.edu the term “mental measurement” means
“a generic term used to cover any application of measurement techniques to the quantification of mental functions”
According to thefreedictionary the “physical measurement” is
“Quantitative information on a physical condition, property, or relation, generally in the form of the ratio of the measured quantity to a standard quantity, or to some fixed multiple or fraction thereof.”
These definitions miss the following characteristics of measurement.
Measurement is an interaction. All measurements necessarily involve an interaction. All measurements necessarily change the state of the system in which the measurement is taking place.
Measurement process creates duality. A measurement requires 2 agents: observer and observed. This is the root cause of duality. Before the measurement there is only one thing – the system (the “whole”). Once the measurement begins there are 2 things: 1) a portion of the system acting as the observer 2) the rest of the system being observed.
Measurement is about analysis. Measurement is a type of analysis. Measurement involves counting, slicing, dicing and many other methodologies of analysis.
Measurement requires the presence of mind. A measurement cannot be performed without a mind. Even when we use the “interaction” paradigm we still need a mind to interpret the “interaction” (measurement). This is not as problematic as some suggest. Since everything is embedded in the Cosmic Mind and everything is made by the Cosmic Mind all measurements (interactions) take place in the Cosmic Mind as well. Cosmic Mind is ever-present.