Validation and normative data for a new dynamic instrument evaluating phonological processing skills in Italian...

Area of Science:

• Developmental Psychology
• Linguistics
• Educational Psychology

Background:

• Phonological processing is crucial for language development and academic success in children.
• There's a need for reliable tools to identify phonological difficulties early in primary school.
• This includes children with diagnosed Developmental Language Disorder (DLD) or Speech Sound Disorder (SSD), and those without a diagnosis but with weak phonological systems.

Purpose of the Study:

• To introduce and validate the Parla-dino test, a new tool for assessing phonological processing skills.
• To evaluate the Parla-dino test's convergent and discriminant validity using a dynamic assessment approach.
• To provide a tool that integrates quantitative performance with qualitative information on modifiability.

Main Methods:

• Administered the Parla-dino test and the Cossu's Phonological Processing Test (gold standard) to 105 Italian first-grade children.
• Assessed convergent validity through correlations between the two tests.
• Examined discriminant validity by comparing 15 first-grade children with DLD to 45 typically developing peers.

Main Results:

• Significant correlations were found between the Parla-dino test (static and dynamic scores) and the gold standard measure.
• Children with DLD performed significantly worse than typically developing peers on both static and dynamic Parla-dino scores.
• The dynamic score of the Parla-dino test was a significant predictor of group status (DLD vs. typically developing).

Conclusions:

• The Parla-dino test demonstrates strong convergent and discriminant validity.
• Limited modifiability in word production, even with cues, may indicate phonological processing difficulties in children with DLD.
• The Parla-dino test is a valid and effective tool for identifying phonological vulnerability in early primary school children.