The present invention generally relates to systems for generating visual identifiers. In particular, the systems and methods herein are configured to generate visual identifiers for representing user response to stimuli. In a preferred embodiment, visual identifiers are generated from primary colors or shapes, wherein the primary colors and/or shapes can be blended or modified based on strength/weakness of the stimuli experienced by a user or across a plurality of users. Preferred embodiments of the invention are further configured to receive text or other non-visual identifier from a user in order to describe the response the user has to a stimuli; wherein the associated system is configured to convert the described response into an appropriate visual identifier.