[Observation of language, visual and hearing function development in infants].

Objective: To investigate language, visual and hearing function development among infants in a day-care center based on educators' assessments.

Methods: One hundred and fifteen infants who attended a day-care center at one university of the São Paulo State, Brazil, were assessed during the period between 1998 and 2001. The "Protocol for Observation of Language, Visual and Hearing Function Development," containing a total of 39 standardized tests, was utilized to assess infants from three to twelve months old.