A tactile and auditory puzzle is provided. The tactile and auditory puzzle includes an outer structure, an inner cavity contained within the outer structure, and an object contained within the inner cavity. A tactile and auditory puzzle set includes a plurality of tactile and auditory puzzles. A method of assaying cognitive ability is further provided, including the steps of providing to a user a tactile and auditory puzzle, instructing the user to describe properties of the puzzle, based on auditory and tactile information obtained by manipulating the puzzle, and comparing the user's description with known properties of the puzzle.