Hand preference and hand skill in children with autism

Area of Science:

• Neurodevelopmental disorders
• Child psychology
• Motor control

Background:

• Hand preference and skill development are crucial aspects of neurodevelopment.
• Previous research suggests potential differences in lateralization and handedness in neurodevelopmental conditions.
• Understanding these differences is important for early identification and intervention.

Purpose of the Study:

• To compare hand preference and hand skill in children with autism, learning disabilities, and typically developing controls.
• To investigate the stability of handedness across different age groups (3-5 and 11-13 years).
• To examine potential dissociation between hand preference and hand skill in these groups.

Main Methods:

• Assessed hand preference and hand skill in three groups of children: autism, learning disabilities, and typically developing controls.
• Participants were divided into two age groups: 3-5 years and 11-13 years.
• Statistical analyses were used to compare handedness degree and consistency across groups and ages.

Main Results:

• Typically developing children exhibited more consistent and pronounced handedness compared to children with autism or learning disabilities.
• Handedness consistency and degree remained stable across age groups, especially in autistic and learning-disabled populations.
• No evidence of a dissociation between hand skill and hand preference was found in any group.

Conclusions:

• Children with autism and learning disabilities demonstrate differences in hand preference consistency compared to typically developing peers.
• Hand preference stability is observed across development in these neurodevelopmental groups.
• Hand skill and preference appear to be integrated, even in the presence of developmental differences.