What is the purpose of word prediction and word completion features in AAC devices?

The purpose of word prediction and word completion features in AAC (Augmentative and Alternative Communication) devices is fundamentally to enhance communication efficiency and effectiveness by displaying potential words or phrases based on the user's input. These features assist individuals who have speech or language impairments by anticipating their intended words, allowing for quicker communication by minimizing the number of keystrokes or selections needed.

When users start typing a word, the AAC device suggests words that may match their intended input, thereby speeding up the communication process and enabling users to express their thoughts more fluidly. This is particularly beneficial in aiding users who may have difficulty with fine motor skills or who require assistance in formulating their sentences.

In contrast to limiting vocabulary or enhancing language complexity, the primary goal is to facilitate smoother and more efficient communication, supporting users in expressing themselves easily and effectively.