Time counts: Bidirectional interaction between time and numbers in human adults

Isabel Arend, Marinella Cappelletti, Avishai Henik

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Number is known for influencing time processing, but to what extent time influences number in human adults is unclear. We investigated possible bidirectional interactions (number on time and time on number) using a novel Stroop-like task; participants compared numbers or temporal durations in congruent (larger number presented for longer duration) or incongruent conditions (smaller number presented for longer duration). Time and number tasks were presented in different blocks (Experiment 1) or within the same block of trials with task instructions provided at the offset of the stimuli (Experiment 2). Analyses of response times (RTs) and their distribution revealed that number affected time from early RTs, and time affected number at late RTs - an asymmetry observed only when time and number tasks were presented in separate blocks. Thus, carefully chosen tasks and appropriate data analysis can reveal bidirectionality between time and number, consistent with shared magnitude or decision mechanisms.

Original languageEnglish
Pages (from-to)3-12
Number of pages10
JournalConsciousness and Cognition
Issue number1
StatePublished - 1 Jan 2014


  • Magnitude
  • Number
  • Stroop task
  • Time
  • Time course

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology


Dive into the research topics of 'Time counts: Bidirectional interaction between time and numbers in human adults'. Together they form a unique fingerprint.

Cite this