Reply to SL Black [8]

We appreciate Black’s comments and thank him for providing a detailed explanation. It is true that many neuropsychological tests involve timed responses, such that longer response latencies correspond to poorer performance (1). In describing test results, however, there is a tendency to refer to the “speed” of the subject’s response, which is essentially the inverse of response latency. Black’s suggestion that data be scored and reported as the inverse of response latency, corresponding more directly to the concept of speed, is quite appropriate and would have enabled us to avoid confusion among readers (2).