Related Experiment Video
Updated: Sep 22, 2026

Assessing Dyslexia at Six Year of Age
Published on: May 1, 2020
[The difference in writing disorders in primary agraphia and congenital dyslexia and their clinical relevance]
1Klinik für Kinder- und Jugendpsychiatrie der Phillips-Universität, Marburg/Lahn.
Abstract:
If after a brain injury reading and writing disturbances persist, the question is: primary agraphia or writing disorders due to dyslexia? If the anamnesis cannot answer this question, a decision is possible by means of four essential differences between writing disorders on the background of primary agraphia and those associated with dyslexia: 1. Agraphic persons correct their mistakes, dyslectics do not. 2. The word formations (paragraphias) due to primary agraphia do not bear close phonetical resemblances, whereas word formations by dyslectic persons are plainly phonetical. 3. Agraphics persevere, dyslectics do not. 4. In primary agraphia, the patient will also show difficulties in writing numbers; in a dyslectic disorder, he/she will not.
Related Concept Videos
Alzheimer's Disease: Overview
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
Language and Cognition
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Learning Disabilities
Dyslexia
Dyslexia is a...
Alzheimer Disease l: Introduction
Dementia l: Introduction

