How to measure psychometrics

Psychological measurement refers to the process of evaluating, quantifying and analyzing people's psychological characteristics (such as intelligence, personality, motivation, attitude, etc.) through laboratory or clinical research methods. The process of measuring and observing physiological changes related to behavior (motor skills, problem solving, sleep, emotions, etc.) using non-invasive measurement methods (such as surface electrodes) without compromising the integrity of the organism.

Generally, electrodes are fixed on the surface of the skin to receive bioelectric activity signals, and monitor various physiological response processes of the person, such as brain activity, muscle activity on the face or other parts, and other processes through recorders and monitors. Organ activity, etc. Usually to monitor cognitive activities, electrodes can be placed on the head to monitor facial muscle activity, or placed on the eyebrow arch and corners of the mouth to monitor heart rate, or placed on the chest. Commonly used measurement indicators include: electromyography, electroencephalogram, blood volume, galvanic skin response, heart rate, respiratory rate, skin conductivity response, eye movement, blood pressure, pupillary response, cortical event-related potential, oxygen consumption, skin Temperature, digestive juice secretion measurement, etc.

The purpose of psychological measurement is to obtain objective data about individual psychological characteristics to better understand human behavior and emotions. Psychological measurement is widely used in human resources recruitment, career assessment, treatment plan formulation and other fields, and plays an important role in medical care, education, social management and other aspects.