Does early intervention have any effect on the development of logical thinking and reasoning skills of deaf and hard of hearing?

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Yes, early intervention has great effect on the development of logical thinking and reasoning skills in children with hearing impairment. From birth to 3 years of age is the critical period. Early intervention has great effect on speech and language development of the child. Early intervention helps the clinician to take the advantage of neuromaturation, the period at which learning speech and language has great importance in child's life.