Implicit Processing of Numerical Order: Evidence from a Continuous Interocular Flash Suppression Study

Dana Sury, Orly Rubinsten

Research output: Contribution to journalArticlepeer-review


Processing the ordered relationships between sequential items is a key element in many cognitive abilities that are important for survival. Specifically, order may play a crucial role in numerical processing. Here, we assessed the existence of a cognitive system designed to implicitly evaluate numerical order, by combining continuous flash suppression with a priming method in a numerical enumeration task. In two experiments and diverse statistical analysis, targets that required numerical enumeration were preceded by an invisibly ordered or non-ordered numerical prime sequence. The results of both experiments showed that enumeration for targets that appeared after an ordered prime was significantly faster, while the ratio of the prime sequences produced no significant effect. The findings suggest that numerical order is processed implicitly and affects a basic cognitive ability: enumeration of quantities.

Original languageEnglish
Article number96
JournalJournal of Intelligence
Issue number5
StatePublished - 16 May 2023

Bibliographical note

Funding Information:
Dana Sury is grateful to the Azrieli Foundation for the award of an Azrieli Fellowship.

Publisher Copyright:
© 2023 by the authors.


  • continuous flash suppression
  • enumeration
  • numerical cognition
  • order processing

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Education
  • Developmental and Educational Psychology
  • Cognitive Neuroscience


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