Graphical representation of neurobiological requirements for TONI-4, Form A. The minimal number of objects involved in mental calculations (the NOB score, bottom) and the minimal amount of posterior cortex territory required (the PCT score, top) as a function of question number.

 
  Part of: Vyshedskiy A, Dunn R, Piryatinsky I (2017) Neurobiological mechanisms for nonverbal IQ tests: implications for instruction of nonverbal children with autism. Research Ideas and Outcomes 3: e13239. https://doi.org/10.3897/rio.3.e13239