Purpose: The purpose of this research forum article was to present research findings on the effectiveness of early intervention for improving outcomes of children with congenital hearing loss. Method: The method involved a narrative overview of recent findings from the Longitudinal Outcomes of Children with Hearing Impairment study. Results: Early intervention, either in the form of Results: Early intervention, either in the form of amplification or cochlear implantation, was associated with higher language scores. Maternal education and communication mode used during early intervention were also significant contributors to child outcomes. Early performance predicted later language development. Conclusion: Early intervention is effective in improving early language outcomes, at a population level.