Statistical Learning Is Not Age-Invariant During Childhood: Performance Improves With Age Across Modality

Area of Science:

• Cognitive Development
• Developmental Psychology
• Neuroscience

Background:

• Statistical learning (SL) is crucial for cognitive development, including language acquisition.
• Previous research indicated age-related improvements in visual SL but not auditory SL, suggesting modality differences.
• The role of stimulus type (linguistic vs. non-linguistic) in these modality differences remained unclear.

Purpose of the Study:

• To investigate the developmental trajectory of statistical learning (SL) across different modalities in children.
• To determine if age affects auditory SL similarly to visual SL when using non-linguistic stimuli.
• To clarify whether observed modality differences in SL are stimulus-dependent.

Main Methods:

• A large-scale study involving children aged 5-12 years.
• Assessment of both visual and non-linguistic auditory statistical learning.
• Comparison of performance across age groups and modalities.

Main Results:

• Both visual and non-linguistic auditory statistical learning showed significant improvement with age.
• Contrary to prior findings, auditory SL was not age-invariant when non-linguistic stimuli were used.
• Performance patterns indicated a similar age effect across both visual and auditory modalities.

Conclusions:

• Statistical learning (SL) development is sensitive to stimulus type, not solely modality.
• Modality-based differences in SL may be limited to linguistic stimuli.
• Auditory SL, like visual SL, develops throughout childhood when appropriate non-linguistic stimuli are employed.