Comparison of temporal judgments in sighted and visually impaired children

Res Dev Disabil. 2019 Dec:95:103499. doi: 10.1016/j.ridd.2019.103499. Epub 2019 Oct 3.


Aim: We studied visually impaired and blind children to investigate the effects of visual damage on time perception.

Methods: Sixty-three children (11 blind, 16 visually impaired, 20 sighted and 16 sighted but blindfolded) performed a temporal bisection task, which consisted of judging different temporal intervals presented in the auditory modality.

Results: The visually impaired children showed lower constant error than sighted children but higher variability (Weber ratio). The blindfolded children had a temporal estimation comparable to the clinical groups and time sensitivity comparable to the controls.

Conclusion: These findings are interpreted in the light of inter-modality interference, assuming that the coexistence of both sensory modalities, present only in controls, leads to a trade-off between the two senses with an indirect contribution of sight, which does not happen either in the clinical groups or in the blindfolded children, despite the single sensory task.

Keywords: Blind children; Time bisection; Time perception; Visually impaired children.

Publication types

  • Comparative Study

MeSH terms

  • Blindness*
  • Case-Control Studies
  • Child
  • Female
  • Humans
  • Judgment*
  • Male
  • Severity of Illness Index
  • Time Perception / physiology*
  • Vision Disorders*