When treating individuals with limited abilities, clinicians often have difficulty promoting the desired motor response. This struggle is especially true with individuals who have severe cognitive disability (CD). McLean et al  found the communication abilities of 84 individuals with severe CD to be limited with facial expressions, gestures, and sounds. However, they also stated that the majority has some potential to perform either symbolic or nonsymbolic forms of engagement. The challenge is finding the learning strategy that promotes engagement. Using biofeedback as a strategy may promote the desired motor responses that could be otherwise hard to obtain for those individuals with limited abilities.