To investigate the brain basis of mathematical skill development in children with and without learning disabilities. 


  • Right handed
  • Between the ages of 5 and 11
  • Without braces


  • Up to $350 for completing the study
  • Pictures of their brain for each year of participation
  • A Stanford Brain Development t-shirt


The study consists of 3 initial appointments followed by 1-year and 2-year follow-up appointments. Each year of participation includes the following appointments:

  • Appointments 1 and 2: Neuropsychological testing
  • During the first two appointments your child will undergo a series of neuropsychological assessments performed by Stanford assessors. The assessments include measures of IQ, reading, memory and math abilities. These appointments will last 1.5 to 2 hours each.
  • Participants are compensated $25 for completing each of these 2 neuropsychological appointments, for a total of $50.
  • Appointment 3: MRI scan
  • During the third appointment, participants will undergo a brain scan (MRI). During the scan, participants will play computer-based math and memory games while pictures of their brain are taken. An MRI scan is a safe, non-invasive procedure that does not use x-rays or radiation. This appointment lasts 2.5 hours to 3 hours and participants are compensated $50.
  • Years 2 and 3 Follow-Ups:
  • Participants return to repeat appointments 1-3 one-year and two-years after their initial visit. Compensation is equal to that of the initial appointments, with a total of $300 possible over the 3-year period.
  • For full completion of the study, participants are compensated an additional $50, for a total of $350.

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