<qa>  What is one or more standard deviation below the mean on the Attention or Working Memory Indices of2. One or more standard deviations below the mean on the Attention or Working Memory Indices of the WRAML 2 56 or Attention or Working Memory Indices that are one or more standard deviations below the participants estimated IQ. These criteria are similar to those used in a trial of methylphenidate with survivors of childhood cancer. 