Partial concurrent thinking aloud

Partial concurrent thinking aloud (or partial concurrent think-aloud, or PCTA) is a method used to gather data in usability testing with screen reader users. It is a particular kind of think aloud protocol (or TAP) created by Stefano Federici and Simone Borsci at the Interuniversity Center for Research on Cognitive Processing in Natural and Artificial Systems of University of Rome "La Sapienza".