The DISC scale (Diagnostic Inventory for screening children, 1984) is used for children from 2 weeks to 5 years of age. The DISC test was developed in Ontario, Canada. The test covers 8 developmental domains (gross and fine motor skills, language perception and expression, auditory and visual attention and memory, independence, and social adaptation). Skills in each domain are assessed. The test does not provide an overall developmental indicator (coefficient), the results of each scale are assessed separately. The DISC is proposed as an instrument for screening children with developmental disabilities and as an aid to support a developmental diagnosis.