1. A method for adaptively training a subject's working memory by presenting a plurality of tiles within a video game environment, the plurality of tiles playing a plurality of phonemes when selected, each of the plurality of tiles having at least one corresponding tile that plays the same auditory phoneme, the method comprising: a) upon selection of a first one of the plurality of tiles, playing a first phoneme, and displaying the first phoneme's associated grapheme; b) upon selection of a second one of the plurality of tiles, playing a second phoneme; c) if the first and second phonemes are the same, and are selected sequentially, removing both the first and second one of the plurality of tiles; d) if the first and second phonemes are not the same, retaining both the first and second one of the plurality of tiles until they are selected sequentially.