Intact first- and second-order implicit sequence learning in secondary-school-aged children with developmental...

Area of Science:

• Cognitive Psychology
• Neurodevelopmental Disorders
• Developmental Psychology

Background:

• Children with developmental dyslexia (DD) often exhibit difficulties with skill automatization, particularly in reading.
• It remains unclear whether these automatization problems extend to other skills and are influenced by task complexity.

Purpose of the Study:

• To investigate the impact of task complexity on implicit sequence learning in children with DD.
• To determine if reading-related automatization deficits are specific to the complexity of the skill being learned.

Main Methods:

• A total of 28 secondary-school-aged children with DD and 28 matched controls participated.
• Participants completed two serial reaction time tasks involving first-order conditional (FOC) and second-order conditional (SOC) sequences.
• Implicit learning of hidden target positions was assessed across varying sequence complexities.

Main Results:

• Sequence learning was comparable between children with DD and controls across both FOC and SOC tasks.
• Implicit sequence learning remained consistent regardless of the complexity of the learned sequence.
• These findings indicate that implicit sequence learning is maintained in DD and is not affected by task complexity.

Conclusions:

• Implicit sequence learning is preserved in developmental dyslexia and is independent of task complexity.
• Previous reports of sequence learning deficits in DD may stem from impaired explicit learning, potentially linked to prefrontal processing.
• Deficits in skill learning and automatization in DD appear to be task-dependent rather than generalized.