Recovery of Natural Speech
Stage 1. Unable to speak during Rancho Levels 2 to 5 (1 year post)
Stage 1. Vocalizations without meaning during Rancho Level 5
Stage 1. Began to use sound meaningfully during Rancho Level 6
Stage 2. Limited Intelligibility >20% Rancho Level 7 (4 years post)
Stage 2. Limited intelligibility, supplemented speech and AAC (13 years post)