Facebook YouTube Twitter Linkedin
Facebook YouTube Twitter Linkedin


CognitionKit N-Back (NBX)

The CognitionKit N-Back task is a measure of attention and working memory.

Administration time

Up to 2 minutes

Task format

The participants will view a stream of abstract shapes (stimuli) one after another. In the 1-Back variant, participants have to determine if the stimulus on screen currently, matches the stimulus shown directly before. If it is a match, they should touch the screen, if it is not a match, they should make no response. The 2-Back version is similar, but has participants compare the current stimulus on screen with their memory of the stimulus two previous.

Outcome measures

Outcome measures cover overall score, accuracy (hits, misses, false alarms and correct rejections) and target sensitivity (A Prime and D Prime).

Normative data 

Please contact us to discuss your normative data requirements. Please note, we do not recommend using normative data in place of a control group. 

When to use this test

We would recommend using this test to assess cognitive function in:

  • Abuse Liability
  • Alzheimer’s disease
  • Attention deficit disorders
  • Autism spectrum disorder
  • Core cognition
  • Depression and affective disorders
  • Down’s syndrome
  • Cognitive safety
  • Neuromuscular diseases
  • Obsessive compulsive disorder
  • Parkinson’s disease
  • Schizophrenia
  • Stroke and cerebrovascular disease
  • Traumatic brain injury

Please note this test is not currently available in CANTAB Connect Research.

CognitionKit N-Back  (NBX)

CognitionKit N-Back  (NBX)