Effects of Numerosity Range on Tactile and Visual Enumeration

Zahira Z. Cohen, Avishai Henik

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Our study explores tactile enumeration using both hands and investigates the effects of numerosity range’s (NR) on general enumeration. In Experiment 1, using custom-made vibro-tactile apparatus, we replicated results of Cohen, Naparstek, and Henik (2014, Acta Psychologica, 150C, 26–34) and again found a moderate increase in RT up to four stimuli and then a decrease for five stimuli. In Experiment 2, we used a within participants design and compared NR 1 to 5 and 1 to 10 in tactile and visual enumeration. The results showed that enumeration for NR 5 to 1 was faster than for NR 1 to 10, especially for numerosities four and five. Within NR 1 to 10, in the visual modality the subitizing range was 4, the counting range was from 5 to 9, and there was an end effect of 10 dots. In the tactile modality, when excluding one-hand arrangements, the subitizing range was 2, the counting range was from 3 to 5, there was an acceleration of counting from 5 and on, and there was an end effect for 10 stimuli that was stronger than for 10 visual stimuli. We suggest that NR influences enumeration and that number-hand association (i.e. resulting from finger counting) influences enumeration, resulting in faster counting.

Original languageEnglish
Pages (from-to)83-98
Number of pages16
JournalPerception
Volume45
Issue number1-2
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Enumeration
  • comparison
  • embodied numerosity
  • end effect
  • finger counting
  • numerosity range
  • range size
  • subitizing
  • tactile
  • vibro-tactile stimuli
  • visual

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