Systems and methods for sourcing participants for a usability study are provided. In some embodiments the systems and methods receive study parameters including the type of study, time-to-field of the study, required number of participants, and required participant attributes. Additionally, a set of business rules for the study are received. These business rules may be received from a client, extrapolated from a service contract with a client for which the study is being performed, or generated based on the monitored outcomes of sourcing of previous studies. Next, panel sources for potential participants and pricing data are queried, and a set of the sources are selected based upon the pricing data. Participants are then received from these sources, which are then fielded in the study and monitored for outcomes.