Working memory development in different modalities in children and young adults.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Developmental Psychology

Background:

• Working memory (WM) research predominantly focuses on verbal and visuospatial domains.
• The tactile modality's role in WM development remains under-explored.

Purpose of the Study:

• To compare the developmental trajectories of tactile working memory (storage and manipulation) with verbal, visual, and visuospatial modalities.
• To investigate age-related changes in tactile WM performance.

Main Methods:

• A cohort of 96 typically developing individuals across three age groups (7-8, 11-12, 20-29 years) participated.
• Participants completed forward and backward span tasks in verbal, visual, visuospatial, and tactile modalities.
• Performance was analyzed across age groups and modalities.

Main Results:

• Working memory performance improved with age across all tested modalities.
• In forward tasks, tactile span was shortest; visuospatial span was shorter than visual-digit span.
• Backward tasks showed lower scores for digit and tactile spans compared to visuospatial span.
• Significant interaction effects indicated greater developmental improvements in tactile WM storage and manipulation.

Conclusions:

• Tactile working memory follows a developmental path comparable to other modalities, with distinct effects on storage and manipulation components.
• Tactile WM demonstrates enhanced improvement during development compared to other sensory modalities.
• Educational and neuropsychological professionals should consider incorporating tactile tasks for WM assessment and intervention, particularly given increased digital technology engagement.