Web-based statistical calculators for psychometric applications in neuropsychology.

BTACT - Estimate global cognition and apply demographic corrections using the Brief Test of Adult Cognition by Telephone.

PsychoCalc - The psychometrics calculator. More details available here.

ReliableChange - Calculate reliable change intervals using a variety of methods.

WMS-IV - Bayesian estimates of the posterior probability of cognitive impairment based on Monte Carlo simulations of impaired scores in healthy and clinical samples using the Wechsler Memory Scale - 4th Edition.