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Learning Disabilities

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Related Experiment Video

Updated: Jun 12, 2025

Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education

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Does the procedural deficit hypothesis of dyslexia account for the lack of automatization and the comorbidity among

Chiara Valeria Marinelli¹, Marialuisa Martelli^2,3, Pierluigi Zoccolotti^2,3,4

¹Cognitive and Affective Neuroscience Laboratory, Department of Humanities, Letters, Cultural Heritage and Educational Studies, Foggia University, Foggia, Italy.

Cognitive Neuropsychology

|September 19, 2024

Summary

The procedural deficit hypothesis (PDH) may not fully explain dyslexia and developmental disorders due to issues with its formulation and testing. Further research is needed to clarify its role in learning.

Keywords:

Dyslexia automaticity instance learning learning disorders procedural deficit hypothesis

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Area of Science:

Neuroscience
Developmental Psychology
Cognitive Science

Background:

The procedural deficit hypothesis (PDH) suggests procedural learning deficits underlie developmental disorders like dyslexia.
This hypothesis faces challenges due to the complexity and heterogeneity of these disorders.

Purpose of the Study:

To critically evaluate the procedural deficit hypothesis (PDH) for developmental disorders.
To identify limitations in the PDH's conceptualization, particularly regarding automatization.
To propose future research directions for a more robust examination of the PDH.

Main Methods:

Critical review of existing literature on the PDH.
Analysis of conceptualizations of automatization within the PDH framework.
Examination of findings from recent reviews and meta-analyses on the PDH.

Main Results:

Dissociated learning disorders challenge a general deficit account proposed by the PDH.
The PDH is underspecified, leading to inconsistent research findings and contradictory conclusions.
Mixed patterns of results in recent meta-analyses highlight the PDH's limitations.

Conclusions:

The current formulation of the PDH is insufficient to explain dyslexia and other developmental disorders.
Alternative views on automaticity are needed to better frame research on the PDH.
Future research should refine the PDH's predictions and methodology for clearer insights.