Abstract
Background. While various screening systems are used worldwide for early detection of developmental delay (DD), Russia still does not have such a screening system in place, even though a good prognosis for the cognitive development of a child with DD depend strongly on the time of the diagnosis.
Highlights
The diagnostic tools used in developmental psychology had to meet high psychometric requirements
Two scales were elaborated, which coincided with the type of variables combined in each of them regardless of age: logical reasoning, motor skills, and general awareness
Structural equation modeling (SEM) confirmed that the selected scales are indicators of the general ability factor, which is the main predictor of the diagnosis
Summary
The diagnostic tools used in developmental psychology had to meet high psychometric requirements. In Russia, there is even a lack of traditional methods for diagnosing preschool children, which correspond to the standard psychometric requirements for diagnostic tools (reliability and validity, the presence of reasonable norms, legality of distribution). These diagnostic obstacles lead to belated and ineffective attempts to correct a variety of developmental problems, among which the most common are developmental delays (DD) in various forms. While various screening systems are used worldwide for early detection of developmental delay (DD), Russia still does not have such a screening system in place, even though a good prognosis for the cognitive development of a child with DD depend strongly on the time of the diagnosis
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