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Related Experiment Videos

Stereotyped behaviours in blind children.

E Fazzi1, J Lanners, S Danova

  • 1Department IRCCS C. Mondino Foundation, Faculty of Medicine, University of Pavia, Italy.

Brain & Development
|December 22, 1999
PubMed
Summary

Stereotyped behaviors are common in blind children, with over 70% exhibiting them. Interventions promoting adaptive behavior can reduce these mannerisms, while environmental restrictions can increase them.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Ophthalmology

Background:

  • Stereotyped behaviors are frequently observed in children with blindness.
  • Commonly cited causes include hospitalization, motor limitations, and reduced exploration.
  • Specific mannerisms like eye pressing are associated with peripheral blindness.

Purpose of the Study:

  • To investigate the prevalence and types of stereotyped motor behaviors in congenitally blind children.
  • To assess these behaviors in children with and without additional neurodevelopmental disabilities.
  • To identify factors influencing the occurrence of stereotyped behaviors.

Main Methods:

  • Assessment of 26 congenitally blind children using videotape recordings.
  • Questionnaires to document the type, frequency, manifestation, and duration of behaviors.

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  • Inclusion of children with and without other neurodevelopmental disabilities.

    • Main Results:

    • Stereotyped behaviors were observed in 73% of the participants.
    • Most frequent behaviors included body rocking, repetitive object handling, hand/finger movements, eye pressing/poking, and face-down lying.
    • Reduction in stereotyped behaviors was linked to stimulation of adaptive behavior; increases were associated with environmental restriction, reduced sensory input, and limited motility.

    Conclusions:

    • Congenitally blind children exhibit a high prevalence of stereotyped motor behaviors.
    • Environmental and adaptive behavioral factors significantly influence the manifestation of these behaviors.
    • Targeted interventions focusing on adaptive behavior and environmental enrichment may mitigate stereotyped behaviors in blind children.