The Geisel Scale is a classic scale for evaluating the development of infants and young children, and has the function of identifying the psychological functions of infants and young children. The scoring results of the Geisel scale can not only reflect the overall development level of the baby, but also not cover up the specific performance characteristics of the baby in various fields such as movement, adaptive behavior, language, personal, social and other fields. It can clearly reflect the baby's performance in various fields. The developmental level provides a reference basis for determining early training. It is one of the most widely used infant and toddler development scales in the world today.

Geisel believes that young babies cannot be referred to as "intelligence", but can only be referred to as "development", which is aimed at the physical and psychological development of infants and young children. This method is used to conduct research on babies. The evaluation is called developmental evaluation, so development is used instead of intelligence, and the result is expressed by developmental quotient. He opposed giving babies only a total development quotient and required that the development quotients in each field be calculated first, and then the total development quotient was calculated. Developmental quotient and intelligence quotient have the same meaning. They both indicate the proportional relationship between mental age (age on the scale) and chronological age. The specific calculation formula is:

Developmental age

Developmental quotient (D Q) = --------------- ×100

Actual age

The evaluation criteria are: 70 is the dividing line; above 70: 70-90 is average; 90-110 is normal; 110-130 is good; 130-150 is excellent ; A score of 150 or above is considered extraordinary. Scores below 70 are considered low-normal, specifically classified as: 70-55 are mildly low-normal; 55-35 are moderately low-normal; 35-20 are severely low-normal; and scores below 20 are extremely low-normal. Don’t: Don’t refer to “low-normal” as “mentally retarded”, and don’t refer to “super-normal” as “prodigy”.