Operation Span Task (OSPAN)

Alternate Names: Automated Operation Span Task

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

Available Test Forms

Automated Operation Span

The Automated Operation Span (OSPAN) Task. Thanks to David Nitz for programming this script, and Jerry Grenard for programming an earlier version.
Duration: 16 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Operation Span Task (OSPAN).

Turner, M. L., & Engle, R. W. (1989). Is working memory capacity task dependent? Journal of Memory & Language, 28, 127-154.

Kane, M. J., Bleckley, M. K., Conway, A. R. A., & Engle, R. W. (2001). A controlled-attention view of working-memory capacity. Journal of Experimental Psychology: General, 130, 169-183.

Kane, M. J., & Engle, R. W. (2003). Working-memory capacity and the control of attention: The contributions of goal neglect, response competition, and task set to Stroop interference. Journal of Experimental Psychology: General, 132, 47-70.

Unsworth, N., Heitz, R.P., Schrock, J.C., & Engle, R.W. (2005). An automated version of the operation span task. Behavior Research Methods, 37, 498 - 505.


Randy Engle. Georgia Tech.