PSYEXPER - ANOTHER EXPERIMENTAL GENERATION SYSTEM FOR THE IBM PC

A system for creating and running psychological experiments on IBM PC compatible computers is described. The system attempts to reconcile the demand for flexible and powerful experimental software with the need for systems that are easy to understand and modify. Experiments are created by building a series of displays with variable compositions, durations, and stimulus onset asynchronies. The number, type, location, color, and perceptibility of stimuli within these displays can be systematically varied. Reaction time and other response measures can be collected from the keyboard, a voice-activated switch, or other external switches. The system is assembled from a series of Turbo Pascal and Turbo C routines that may be modified by the user or incorporated into new routines. Custom modules can be added easily to any of the system's menus. The system is best suited for discrete trial experiments with target detection, perceptual priming, lexical decision, or recognition memory tasks. © 1991 Psychonomic Society, Inc.