Related Experiment Videos
The age dependence of stereotyped behaviours in blind infants and preschoolers
H Tröster1, M Brambring, A Beelmann
1University of Bielefeld, Faculty of Psychology and Sport Science, Research Unit Psychological Rehabilitation II, Germany.
Insights
Stereotyped behaviors in blind children change with age. Eye poking and body rocking increase early, while other behaviors decrease after age 3, with situational triggers shifting to cognitive demands.
Area of Science:
- Developmental Psychology
- Pediatrics
- Ophthalmology
Background:
- Early intervention and family care are crucial for blind infants and preschoolers.
- Understanding developmental patterns of blind children informs support strategies.
Purpose of the Study:
- To investigate age-dependent changes in stereotyped behaviors of congenitally blind children.
- To identify situational triggers for these behaviors across different age groups.
Main Methods:
- Utilized the Bielefeld Parents' Questionnaire for Blind and Sighted Infants and Preschoolers.
- Assessed 85 congenitally blind children (5-72 months) with no other significant disabilities.
- Compared stereotyped behaviors across five age groups.
Main Results:
- The repertoire and amount of stereotyped behaviors varied significantly with age.
- Eye poking and body rocking increased from 1-2 years and remained high.
- Stereotyped behaviors shifted from monotony/arousal triggers to cognitive/concentration demands in older children (4-6 years).
Conclusions:
- Stereotyped behaviors in blind children exhibit a distinct age-dependent trajectory.
- The environmental and cognitive factors influencing these behaviors evolve during early development.
- Findings highlight the need for age-specific interventions for blind children.
Abstract:
As part of a research programme on early intervention and family care for blind infants and preschoolers, the Bielefeld Parents' Questionnaire for Blind and Sighted Infants and Preschoolers was given to 85 parents of congenitally blind children. All 85 children (from 5 to 72 months) in the sample were totally blind and had no further serious disabilities. A comparison of five age groups of blind infants and preschoolers indicated that the repertoire of stereotyped behaviour patterns depended on age. After expanding from the first to the second year of life, the range of different stereotyped behaviours decreased from the age of 3 years up to school enrollment. The amount of stereotyped behaviours showed a similar course. Among the individual stereotyped behaviours, only the frequency of eye poking and body rocking increased from the first to the second year of life and then maintained a relatively high level across the entire preschool age range. The situational and person-specific conditions under which stereotyped behaviours could typically be observed also appeared to change with the child's age. While in the first years of life, monotony and arousal situations dominated among the elicited stereotyped behaviours, the 4- to 6-year-old blind children increasingly exhibited stereotyped behaviours in situations in which they were confronted with cognitive and concentrative demands. Various possible explanations of the age dependence of stereotyped behaviour patterns in blind infants and preschoolers are discussed.