A method on a computing device is provided for enhancing the memory and cognitive ability of an older adult by requiring the adult to spatially match pairs of graphically presented response buttons that are associated with aurally presented stimuli which is processed by the computing device. An adult is presented with a grid of response buttons that have been paired with aural stimuli. As the adult selects a response button, its processed aural stimuli is presented. The adult is required to remember which response button is associated with which aural stimuli, and sequentially select response buttons having the same aural stimuli. As the adult sequentially selects response buttons having the same aural stimuli, the response button pair is removed. The number of response buttons presented in a trial, and the amount of processing applied to the stimuli adapts to the adults success or failure in completing trials. A method is provided for preventing chance sequential selection of response buttons having the same aural stimuli.