Abstract
BACKGROUND: We briefly describe the Psychology Experiment Building Language (PEBL), an open source software system for designing and running psychological experiments. NEW METHOD: We describe the PEBL Test Battery, a set of approximately 70 behavioral tests which can be freely used, shared, and modified. Included is a comprehensive set of past research upon which tests in the battery are based. RESULTS: We report the results of benchmark tests that establish the timing precision of PEBL. COMPARISON WITH EXISTING METHOD: We consider alternatives to the PEBL system and battery tests. CONCLUSIONS: We conclude with a discussion of the ethical factors involved in the open source testing movement.