Knox Cube Test-Revised (KCT-R)

The Knox Cube Test-Revised (KCT-R) measures short-term memory and attention span. Useful in identification of ADD.
Item Product Price QTY
33922 Knox Cube Test-Revised $115.00
33922R KCT-R Record Booklets, Pk/15 $30.00
The Knox Cube Test-Revised (KCT-R) measures short-term memory and attention span. Useful in identification of ADD.

Measures short-term memory and attention span. Useful in identification of ADD.
Mark H. Stone, Ed.D., Psy.D.

  • Age Range: 3 years and above
  • Time: Untimed, approximately 10-15 minutes

Knox's Cube Test-Revised (KCT-R), published by Stoelting, is a nonverbal test which measures the attention span and short-term memory of children and adults. Because attention span and memory are basic to acquiring almost all other skills, the KCT-R is useful in a wide variety of psychological and educational evaluations.

Directions for the KCT-R are few, and pantomime can be used for administration, making the KCT-R useful in evaluating the mental status of the deaf, non-verbal and foreign-speaking.

The KCT-R Kit includes a Manual, Tapping Cubes and 15 Test/Record Booklets.

Knox Cube Test Research

Franzen, M. D. (2000). Neuropsychological assessment in traumatic brain injury. Critical Care Nursing Quarterly, 23(3), 58-64.

  • Use of Knox Cube Test in assessment of TBI

Hamilton, H. (2017). Sequential recall and american sign language: A look at LOT. Sign Language Studies, 17(2), 265-276.

  • Use of Knox Cube Test in assessment of deaf individuals

Pal, H., Kulhara, P., & Verma, S. K. (2000). Attention dysfunction and thought disorders in schizophrenia. Journal of Personality and Clinical Studies, 16(1), 24-29.

  • Use of Knox Cube Test in assessment of those with thought disorders

Ni, T., Huang, C., & Guo, N. (2011).Executive function deficit in preschool children born very low birth weight with normal early development. Early Human Development, 87(2), 137-141.

  • Use of Knox Cube Test to assess children born at low birthweight


Richardson, J.T. (2005). Knox's cube imitation test: A historical review and an experimental analysis, Brain and Cognition, 59(2), 183-213.

  • Review of relationship between Knox cube test and performance and verbal IQ

Vazir, S., Nagalla, B., Thangiah, V., Kamasamudram, V., & Bhattiprolu, S. (2006). Effect of micronutrient supplement on health and nutritional status of schoolchildren: Mental function. Nutrition, 22(1), S26-S32.

  • Research showing that a supplement was associated with higher cognitive performance, as assessed by Knox Cube Test