The Collaborative International Dictionary of English v.0.48:

Psychometry \Psy*chom"e*try\, n. [Psycho- + -metry.] (Physiol.)
   The art of measuring the duration of mental processes, or of
   determining the time relations of mental phenomena. --
   Psy`cho*met"ric, a.
   [1913 Webster]

WordNet (r) 3.0 (2006):

psychometry
    n 1: any branch of psychology concerned with psychological
         measurements [syn: psychometry, psychometrics,
         psychometrika]