Related Experiment Videos
Four-year follow-up of locomotor and language development in 34 twin pairs
B Alin Akerman1, P A Thomassen
1Department of Special Education, School of Education, Karolinska Hospital, Stockholm, Sweden.
Insights
Low birth weight in twins is linked to lower locomotor and language development scores at age four. This study highlights birth weight as a key factor influencing early childhood development in twins.
Area of Science:
- Child Development
- Twin Studies
- Pediatric Health
Background:
- Twin studies offer unique insights into the interplay of genetics and environment on child development.
- Early childhood development is influenced by various factors including birth weight and sex.
- Understanding developmental trajectories in twins is crucial for identifying potential risks and interventions.
Purpose of the Study:
- To investigate the impact of birth weight and sex on developmental quotients in four-year-old twins.
- To explore differences in locomotor and language development between male and female twins.
- To compare developmental outcomes between monozygotic (MZ) and dizygotic (DZ) twins.
Main Methods:
- A cohort of 34 twin pairs was assessed at four years of age.
- Griffiths' Mental Development Scales were administered to all children.
- Data on birth weight and sex were collected and analyzed in relation to developmental quotients.
Main Results:
- Girls generally exhibited higher development quotients than boys.
- Twins with a birth weight below 2500 grams showed significantly lower locomotor quotients at age four.
- A similar, though not statistically significant, trend was observed for language quotients.
- No significant developmental differences were found between monozygotic (MZ) and dizygotic (DZ) twins.
Conclusions:
- Birth weight is a significant predictor of locomotor development in four-year-old twins.
- While girls tend to show higher development quotients, sex differences were not statistically significant across all measures.
- The type of twinning (MZ vs. DZ) did not appear to influence locomotor or language development in this cohort.
Abstract:
A group of 34 twin pairs was studied at four years of age. Characteristics of the group were a homogeneous social background, good parental interrelationship and conscientious care during pregnancy, delivery and the neonatal period. All the children were tested with the Griffiths' Mental Development Scales. The girls generally showed a higher development quotient than the boys. Birth weight seemed to be the most important factor; at 4 years of age, the twins with a birth weight of less than 2500 grams had a significantly lower locomotor quotient. The language quotient showed a similar trend. This difference was, however, not significant. No significant differences in either locomotor or language development could be observed between MZ and DZ twins.