Background: Attention deficits and impaired reading performance co-occur more often than expected by chance; however, the underlying mechanism of this association still remains rather unexplored.
Method: In two consecutive studies, children aged 8 to 12 years with attention-deficit/hyperactivity disorder (ADHD) and children with reading disability (RD) were examined using a 2 (ADHD versus no ADHD) × 2 (RD versus no RD) factorial design. To further delineate deficient interference control from reading processes, we used a newly developed self-paced word/nonword reading task (Experiment 1, n = 68) and a modified computerized Stroop paradigm, including an orthographic phonological neighbor (OPN) condition (Experiment 2, n = 84).
Results: RD (compared to non-RD groups) was associated with impairments in both word and nonword reading, while children with ADHD also showed impaired nonword reading. In the Stroop task, RD, but not ADHD, had a significant impact on task performance. Interestingly, a significant interaction between ADHD, RD, and task condition emerged, which was due to particularly slower reaction times to nonwords in children with RD only, while task performance in children with comorbid ADHD and RD resembled that of ADHD only.
Conclusions: Thus, our results demonstrate that impairments in nonword reading were not specific to RD but were also present in children with ADHD. In addition, RD and not ADHD was characterized by poor interference control in the Stroop task. These findings question whether unique cognitive deficits are specific to either ADHD or RD.
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http://dx.doi.org/10.1080/13803395.2013.878690 | DOI Listing |
Fast periodic visual stimulation (FPVS) coupled with EEG has been used for a decade to measure word-selective neural responses in (a)typical adults and developmental readers. Here, we used this FPVS-EEG approach to evaluate suitable and optimal stimulation frequency rates for prelexical and lexical word-selective responses and relate these rates to typical reading speed and interindividual variability in reading performance. EEG was recorded in 41 healthy adults who viewed words inserted periodically (1 Hz) at four different stimulation frequency rates (4 Hz, 6 Hz, 10 Hz, and 20 Hz).
View Article and Find Full Text PDFBrain Cogn
December 2024
Department of Neuroscience, University of Padova, Italy; Padova Neuroscience Center, University of Padova, Italy. Electronic address:
Mixed Transcortical Aphasia (MTA) is an infrequent aphasic syndrome, characterized by poor comprehension and production in oral language abilities and poor performance in written language abilities. However, individuals with MTA typically retain the ability to repeat. Our patient, a woman who suffered from a left hemisphere ischemic stroke involving perisylvian areas, presented with repetition preserved for words, non-words, sentences and numbers, together with marginally preserved reading abilities.
View Article and Find Full Text PDFAIDS
January 2025
Geisel School of Medicine at Dartmouth, Dartmouth College.
Objective: Children with HIV (CWH) are at increased risk for cognitive and developmental delays, although HIV's influence on reading development remains unclear. Research using internationally validated reading measures with control for factors known to influence literacy outcomes is needed. The Early Grade Reading Assessment (EGRA) is a tool for assessing students' progress toward reading that has been validated across countries.
View Article and Find Full Text PDFCortex
November 2024
Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA; Dyslexia Center, Department of Neurology and Psychiatry, UCSF Weill Institute for Neurosciences, University of California, San Francisco, CA, USA. Electronic address:
Based on historic observations that children with reading disabilities were disproportionately both male and non-right-handed, and that early life insults of the left hemisphere were more frequent in boys and non-right-handed children, it was proposed that early focal neuronal injury disrupts typical patterns of motor hand and language dominance and in the process produces developmental dyslexia. To date, these theories remain controversial. We revisited these earliest theories in a contemporary manner, investigating demographics associated with reading disability, and in a subgroup with and without reading disability, compared structural imaging as well as patterns of activity during tasks of verb generation and non-word repetition using magnetoencephalography source imaging.
View Article and Find Full Text PDFJ Exp Child Psychol
March 2025
Department of Psychology and Cognitive Science, University of Trento, 38068 Rovereto (Trento), Italy. Electronic address:
Emotions are known to influence memory, in particular retention and recall, with positive emotions enhancing performances and negative emotions showing mixed effects. Although the influence of emotions on memory is well-established, their precise impact on the learning process remains a matter of debate and investigation. We implemented two experiments with children aged 6 to 8 years to examine how different emotional states affect training with tasks of varying difficulty.
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