Orthographic Support for Word Learning in Clinical Populations: A Systematic Review

Area of Science:

• Linguistics
• Developmental Psychology
• Special Education

Background:

• Orthographic facilitation is a strategy to enhance word learning.
• Its effectiveness in various pediatric clinical populations requires systematic evaluation.
• Children with developmental language disorders (DLD), autism spectrum disorders (ASD), Down syndrome, and dyslexia often face word learning challenges.

Purpose of the Study:

• To systematically review the literature on orthographic facilitation for children and adolescents with clinical language and learning disorders.
• To assess the extent to which orthographic facilitation has been demonstrated in populations including DLD, ASD, Down syndrome, dyslexia, hearing impairment, intellectual disability, and cerebral palsy.

Main Methods:

• A systematic review of five databases was conducted for studies published up to December 2019.
• Eligible studies included participants from clinical populations and compared word learning with and without orthography.
• Methodological rigor of selected studies was assessed.

Main Results:

• Five studies met the inclusion criteria, focusing on DLD, verbal children with ASD, Down syndrome, and dyslexia.
• All investigated populations demonstrated improved word learning accuracy in picture naming tasks when words were trained with orthography.
• Benefits were observed in both accuracy and retention of learned words.

Conclusions:

• Training words in the presence of orthography significantly improves word learning accuracy and retention in children with DLD, ASD, Down syndrome, and dyslexia.
• Orthographic facilitation is a beneficial strategy for these clinical populations.
• Further research is needed to explore its efficacy across a broader range of clinical conditions.