Tasks are grouped into four categories (social contact, fine motor skill, language, and gross motor skill) and include items such as smiles spontaneously (performed by 90% of three-month-olds), knocks two building blocks against each other (90% of 13-month-olds), speaks three words other than "mom" and "dad" (90% of 21-month-olds), or hops on one leg (90% of 5-year-olds).Īccording to a study commissioned by the Public Health Agency of Canada, the DDST is the most widely used test for screening developmental problems in children. In a test to be administered by a pediatrician or other health or social service professional, a subject's performance against the regular age distribution is noted. The scale reflects what percentage of a certain age group is able to perform a certain task. The test is currently marketed by Denver Developmental Materials, Inc., in Denver, Colorado, hence the name. Frankenburg and first introduced by him and Josiah.B. The Denver Developmental Screening Test (DDST), commonly known as the Denver Scale, is a developmental measure, and is a test for screening cognitive and in preschool children.
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