The Virtual Environment Grocery Store (VEGS) is a virtual reality based neuropsychological assessment. The VEGS uses a simulated shopping environment to assess the ways in which users complete a series of errands that require organization and planning while shopping. The VEGS allows the examiner to make systematic adjustments to an examinee’s information load (which affects goal maintenance). The VEGS offers an advanced virtual reality version of the Multiple Errands Task that includes assessment of learning, memory (including prospective memory), and executive functioning. The VEGS has a library of “multi-task assignments'' for empirical determination of an examinee’s baseline performance, and then adds conditions in the environment that impact subsequent performance. This includes the ability to adjust the density of items on shelves, the similarity of packaging, and the intensity and types of realistic irrelevant distractions (e.g. loudness/type of music in the background and loudspeaker announcements).