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© 2007-2013
David Cella, Ph.D.,
Richard Gershon, Ph.D.,
Michael Bass, M.S. &
Nan Rothrock, Ph.D.


Assessment CenterSM is a free, online data collection tool that enables researchers to create study-specific websites for capturing participant data securely online.

Studies can include measures within the Assessment Center library as well as custom instruments entered by the researcher. The instrument library includes self- and proxy-report short forms, computerized adaptive tests (CATs), and batteries or profiles from:

  • Patient-Reported Outcomes Measurement Information System (PROMIS)
  • Quality of Life in Neurological Diseases (Neuro-QOL)
  • NIH Toolbox

Among other important features, Assessment Center also enables:

  • Downloading library instruments for administration on paper
  • Customization of items or instruments (e.g., format, randomization, skip patterns)
  • Real-time scoring of CATs and short forms
  • Storage of protected health information (PHI) in a separate, secure database
  • Automated accrual reports
  • Real-time data export
  • Ability to capture endorsement of online consent forms


  • Additional PROMIS Instruments now available in Spanish: See the Instrument Library link at left to see what PROMIS instruments are available in Spanish.
  • New PROMIS Computer Adaptive Tests for Upper Extremity Function and Mobility: Physical Function can now be assessed specifically for upper or lower body function. The full Physical Function CAT remains available.
  • Updated versions of some PROMIS Instruments: Some PROMIS item banks have had minor modifications (typically removal of 1-2 items).

Demonstration CAT
Try out a PROMIS Computerized Adaptive Test and get an instant score report. CATs include Emotional, Physical, and Social Health. Click here to begin.

Request PDFs of
PROMIS Short Forms




NIH Toolbox

Studies of Interest

PROsetta Stone

Assessment Center reserves the right to have regular scheduled maintenance windows. Weekly maintenance may be performed on Sunday mornings from 7am to 9am CST. During this time, Assessment Center may be unavailable. We apologize for any inconvenience this may have. If you have any questions, please contact us.