Improving the language ability of deaf signing children through an interactive American sign language-based video game.

We present the design of an interactive computer game-based intervention, CopyCat, in which deaf children use sign language to direct the actions of a character in the game. We conducted a study to quantify the game's impact on expressive language development using twelve participants from a local school for the deaf. Learners in the experimental group improved significantly in their receptive, expressive, and sentence repetition abilities as opposed to those in the control group.