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The first step that must be taken to understand the meaning of the term psychometry is to determine its etymological origin. In this sense, we can say that it is a word that derives from Greek, since it is made up of the sum of several elements of that language:
-The noun "psyke", which is synonymous with "soul".
-The term "metron", which is equivalent to "measure."
-The suffix "-ia", which is used to indicate "quality".

Hence, based on its composition, we can establish that, in general, psychometry can be translated as "measurement of different psychological facts."

The psychometry it is the branch of the psychology that is oriented to the measurement of psychic processes . For this, it develops studies that allow to give a figure to its results, making possible the comparison between the psychological characteristics of different people in an objective way.

Specifically, we can say that psychometrics is used to proceed to measure certain psychological aspects of a person such as his abilities, his knowledge, his state of opinion, the attitude he presents, his personality traits and even his mental abilities.

It can be said that, through psychometrics, you assigns a value to a psychic attribute of an individual, revealed through the evaluation in question. This number allows the specialist to perform objective comparisons with other results and even with the average values.

It is important to keep in mind that recording and measuring psychic issues is not easy, since they are characteristics that are not available to the observation . Psychometrics, therefore, must first develop reliable evaluation methods to obtain accurate results and only then proceed to quantify what could be discovered.

In addition to all the above, we have to make known that psychometry is usually divided into three large blocks or groups:
-Scaling. This part of this scientific discipline what it does is shape, as well as develop, the different methods that are used for the construction of psychophysical or psychological scales.
-Measurement theory. This, on the other hand, becomes the area of ​​psychometrics that revolves around the theoretical foundation of the mentioned measurement.
-Test theory, which deals with the mathematical models and logic used to make and use the different tests.

Psychometric studies are often used in the labor sphere . It is common for a company summon applicants to a position for a psychometric evaluation to obtain reliable data about their intelligence , his personality , etc. Based on the results and psychometrics reports, the company may hire the right employee.

An important detail when understanding the concept of psychometrics is to understand that this methodological discipline works with the characteristics of a person , not with the person itself. That is to say: the quantification (the assignment of a numerical value) is applied to a psychic characteristic observed through an evaluation and not to the subject.

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