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Bayley-4 Developmental Screening Test

General Information About the Test

The Bayley-4 Test (Bayley Scales of Infant and Toddler Development) is an internationally validated, comprehensive test that evaluates the developmental status of infants and toddlers aged 1 to 42 months (3.5 years) within a scientific framework. The child's cognitive abilities, language skills (receptive and expressive language), and motor development (fine and gross motor) are observed and scored by expert psychologists in a play-based environment.

Test Process and Preparation

The administration method of the Bayley-4 test and the responsibilities of the families.

It is administered to determine where the child stands in developmental milestones compared to their peers, to detect possible developmental delays (e.g., autism spectrum or speech delay) early, and to create individualized education plans.

The test is conducted as an interactive game using age-appropriate toys and tasks. Depending on the child's compliance and the scope of the test, it generally takes between 45 and 60 minutes.

Yes, particularly for small infants, parents are required to be present in the room during the test, following the guidance of the expert psychologist, to ensure the child feels safe and exhibits natural responses.

The information on this page is for informational purposes only. The results of medical tests must be evaluated by specialist physicians.

You can find all the information regarding your treatment and hospital stay process in this section.

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