Serial Sevens (Serial Threes) Task

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

Available Test Forms

Serial Sevens (Serial Threes) Task - English

The Serial Sevens and Serial Threes Tasks by Kennedy & Scholey (2000), measuring cognitive effort/load by having participants count backwards by sevens or threes.
Duration: 5 minutes
(Requires Inquisit Lab to run on your computer)
Run Demo
(See how the test runs with Inquisit Web)
Last Updated: Mar 5, 2022, 12:14AM


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Serial Sevens (Serial Threes) Task.

Kennedy, D.O. & · Andrew B. Scholey, A.B. (2000). Glucose administration, heart rate and cognitive performance: effects of increasing mental effort. Psychopharmacology (2000) 149:63–71.

Srygley, Mirelman, Herman, Giladi, & Hausdorff. (2009). When does walking alter thinking? Age and task associated findings. Brain Research, 1253, 92-99.

Margaret Anne Defeyter, & Riccardo Russo. (2013). The effect of breakfast cereal consumption on adolescents’ cognitive performance and mood. Frontiers in Human Neuroscience, 7(NA), NA.

Kannape, O., Barré, A., Aminian, K., & Blanke, O. (2014). Cognitive Loading Affects Motor Awareness and Movement Kinematics but Not Locomotor Trajectories during Goal-Directed Walking in a Virtual Reality Environment. PLoS One, 9(1), E85560.

Kim, Needle, Thomas, Higginson, Kaminski, & Swanik. (2016). A sex comparison of reactive knee stiffness regulation strategies under cognitive loads. Clinical Biomechanics, 35, 86-92.