Missing Scan Task

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

Available Test Forms

Missing Scan Task

A procedure based on Buschke (1963) in which participants identify which of a consecutive sequence of numbers is missing.
Duration: 30 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Missing Scan Task.

Buschke, H. (1963). Retention in Immediate Memory Estimated without Retrieval. Science, New Series, Vol. 140, No. 3562 (Apr. 5, 1963), pp. 56-57

Jonides, John, et al. “Temporal Factors Influencing Performance in the Missing Scan Paradigm.” Perception & Psychophysics, vol. 12, no. 2, 1972, pp. 241–244.

Roman, Adrienne S., et al. “Assessment of Working Memory Capacity in Preschool Children Using the Missing Scan Task.” Infant and Child Development, vol. 23, no. 6, 2014, pp. 575–587.