Cognitive Demand Battery (CDB)

FREE for use with an Inquisit Lab or Inquisit Web license.

Available Test Forms

Cognitive Demand Battery

A battery of three short and timed cognitive tests (Serial7, Serial3, and Rapid Visual Information Processing) as well as a visual analogue scale (to assess mental fatigue) . The battery takes approx. 10 minutes to run. The Inquisit version uses mouse or touch input in each of these tasks.
Duration: 10 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Cognitive Demand Battery (CDB).

Kennedy, D. O., Haskell, C. F., Robertson, B., Reay, J., Brewster-Maund, C., Luedemann, J., Maggini, S., Ruf, M., Zangara, A., & Scholey, A. B. (2008). Improved cognitive performance and mental fatigue following a multi-vitamin and mineral supplement with added guaraná ( Paullinia cupana). Appetite, 50(2), 506–513.

Massee, L. A., Ried, K., Pase, M., Travica, N., Yoganathan, J., Scholey, A., Macpherson, H., Kennedy, G., Sali, A., & Pipingas, A. (2015). The acute and sub-chronic effects of cocoa flavanols on mood, cognitive and cardiovascular health in young healthy adults: a randomized, controlled trial. Frontiers in Pharmacology, 6, 93–93.