Why did Itard stop working with Victor the Wild Boy?

Answer 1

Itard had worked with Victor the Wild Boy of Aveyron for five years. His main goal was to get Victor to speak, but according to all the steps he tried teaching Victor, Victor remained mute. Although Victor made progress with his other educations and basics he was taught by Itard. Itard somehow found out later on that Victor could've been in a way mentally disabled and that possibly could've caused his silence. Victor was in adolescence when he was captured and brought to Paris and taken in by Itard-and Itard later realized that a child must learn how to speak before reaching puberty (adolescence). Because if an adolescent had lack of human speech it would be impossible to teach them speech.