Why was this study done?
Prior studies have demonstrated that home visit interventions delivered by community health workers (CHWs) can have a positive impact on child development.We integrated a home visit intervention into existing CHW operations in South Africa to generate evidence useful for local decision-making.A key innovation of this study was the inclusion of 2 markers of neural function as primary outcomes: electroencephalography (EEG) power and saccadic reaction time (SRT), an eye-tracking measure of visual processing speed.