When infants are assessed on the Bayley Scales of Infant Development III, it is common for their performance to remain the same from one test session to another.

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The Bayley Scales of Infant Development III, like other developmental assessments, can show variability in an infant's performance across different test sessions due to factors such as the child's health, mood, and environment at the time of testing.

When Infants Are Assessed on the Bayley Scales of Infant