Abstract
The present study aimed to determine the Effectiveness of attention-based cognitive rehabilitation program on auditory discrimination and information processing speed of children with dyslexic learning disorder (dyslexia) in Semnan, Iran. This research employed a quasi-experimental design with a pre-test and post-test control group structure. The statistical population included all dyslexic students in Semnan during the 2023-2024 academic year, from which 24 participants were selected using convenience sampling and were then randomly assigned to two groups: an experimental group (n=12) and a control group (n=12). Both groups completed the Auditory Discrimination Test (Wepman, 1958) and the Processing Speed Test (Zahlen-Verbindungs, 1978; Neubauer & Noort, 1998) as a pre-test. The experimental group received ten training sessions designed to enhance attention and concentration, while the control group continued their regular daily activities without intervention. After the training, a post-test was administered to both groups. The collected data were analyzed using descriptive statistics (central tendency and dispersion measures) and inferential statistics (ANCOVA analysis). The findings revealed that attention-based cognitive rehabilitation training had a significant and positive impact on improving auditory discrimination and processing speed in dyslexic students (p<0.005). Implementing such a rehabilitation program as an effective educational intervention can contribute to enhancing reading skills, visual and auditory processing speed, spelling, writing, and mathematical calculations, ultimately supporting academic success and progress.
Keywords: Attention, Auditory Discrimination, Dyslexia, Learning Disorder, Information Processing Speed.
 
 
 
Extended Abstract

Introduction

Learning disabilities, particularly dyslexia, significantly impact children’s academic performance, especially in reading. Dyslexia is characterized by difficulties in accurate and fluent word recognition, spelling, and decoding abilities, despite normal intelligence. Research indicates that nearly 80% of children with learning disabilities struggle primarily with reading (Margolis & Liu, 2023; Quinn et al., 2020). Over the past decade, the diagnosis of learning disabilities has increased by more than 300%, highlighting a growing demand for effective educational interventions (Perhon et al., 2021; Del Bianco & Mason, 2021). According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), dyslexia is no longer classified as an independent disorder but rather as part of a broader category of specific learning disorders (American Psychiatric Association, 2022). One of the major cognitive deficits associated with dyslexia is auditory discrimination, which refers to the ability to distinguish between phonemes in spoken language. This skill is essential for phonological awareness, an important component of reading development. In addition, processing speed, which reflects the efficiency of cognitive and perceptual processes, is often impaired in dyslexic children, leading to slower reading fluency and reduced comprehension (Aro et al., 2019; Rahimipour et al., 2017). While several intervention strategies exist, recent research has highlighted the potential benefits of cognitive rehabilitation programs that focus on improving attention, auditory discrimination, and processing speed. These programs are designed to enhance executive functions, which play a crucial role in academic success. Given the importance of early intervention, this study aims to evaluate the effectiveness of an attention-based cognitive rehabilitation program in improving auditory discrimination and processing speed in children with dyslexia.
Research Question(s)
The primary goal of this study is to determine whether attention-based cognitive rehabilitation can effectively enhance auditory discrimination and processing speed in children with dyslexia. While previous studies have examined different intervention methods, there is still a need for more empirical evidence regarding the impact of attention-training programs on these specific cognitive functions. This research seeks to fill this gap by investigating the effects of a structured intervention designed to improve foundational cognitive skills in dyslexic children.

Literature Review

Dyslexia is a common neurodevelopmental disorder affecting 10-15% of school-aged children worldwide (Norton et al., 2014; Zavadenco, 2021). One of the primary characteristics of dyslexia is difficulty in phonological processing, which is directly linked to deficits in auditory discrimination and processing speed (Papanastasiou, 2017; Watson et al., 2016). Auditory discrimination deficits impair a child’s ability to recognize and differentiate speech sounds, making it difficult to develop strong phonemic awareness and reading fluency. Studies suggest that children with dyslexia struggle to process subtle differences in phonemes, which negatively affects their ability to decode and understand written text (Brooks et al., 2011; Khalili Kermani et al., 2012). Additionally, processing speed deficits have been widely observed in children with dyslexia. This cognitive function affects how quickly individuals can process and integrate visual and auditory information, which is crucial for fluent reading. Children with dyslexia often require significantly more time than their peers to recognize letters and words, impacting their overall reading comprehension and academic performance (Lais et al., 2017; Araujo & Faisca, 2019). Recent research has highlighted the potential of attention-based cognitive rehabilitation programs in addressing these deficits. Several studies have shown that structured cognitive training interventions, including computerized attention-training programs, can improve auditory processing, executive functions, and reading-related cognitive abilities in children with dyslexia (Dehghani et al., 2015; Birami et al., 2017). This study builds upon these findings by evaluating the effectiveness of a structured intervention designed to target auditory discrimination and processing speed.

Methodology

This study employed a quasi-experimental design with a pre-test and post-test control group structure. The research was conducted in learning disability centers in Semnan, Iran, where 24 children diagnosed with dyslexia were selected using convenience sampling. These participants were randomly assigned to either:

Experimental Group (n=12): Received a 10-session attention-based cognitive rehabilitation program
Control Group (n=12): Did not receive any intervention

To assess cognitive improvements, three standardized instruments were used:

Wepman Auditory Discrimination Test (Wepman, 1958) to measure auditory discrimination skills
Processing Speed Test (Oswald & Roth, 1978) to evaluate reaction time and cognitive efficiency
Dyslexia Diagnosis Test (Karami Nouri & Moradi, 2005) to confirm the presence of reading disabilities

The Attention Gym Program, which consists of ten 45-minute sessions, was implemented to enhance selective attention, divided attention, auditory processing, and visual processing speed. The collected data were analyzed using ANCOVA (Analysis of Covariance) in SPSS (Version 22) to compare pre-test and post-test scores between the experimental and control groups.

Results

The statistical analysis confirmed that the cognitive rehabilitation intervention significantly improved both auditory discrimination and processing speed in the experimental group.

Auditory Discrimination Scores (Error Reduction):


Pre-test: 30.10 errors
Post-test: 13.90 errors (p < 0.001(


Processing Speed Scores (Response Time Reduction):


Pre-test: 124.01 sec
Post-test: 58.50 sec (p < 0.001)

These findings indicate that after participating in the attention-based rehabilitation program, children demonstrated faster auditory processing and greater accuracy in distinguishing phonemes.

Discussion

The results of this study align with previous findings suggesting that attention-based cognitive training can significantly improve phonological awareness, reading fluency, and executive functioning in children with dyslexia (Bonavita et al., 2015; Giora et al., 2024). The improvement in auditory discrimination indicates that phonological training can enhance the brain’s ability to process and differentiate speech sounds more effectively. Similarly, the increase in processing speed supports the hypothesis that cognitive training strengthens neural pathways involved in rapid information retrieval and reading automaticity (Feizi Pour et al., 2019).

Conclusion

The findings of this study suggest that attention-based cognitive rehabilitation is an effective intervention for improving auditory discrimination and processing speed in children with dyslexia. The results underscore the importance of early intervention programs that focus on enhancing executive functions and phonological processing to support reading development. Given the positive outcomes observed, further research should explore the long-term impact of these interventions, compare them with alternative methods, and assess their applicability to different types of learning disabilities. Additionally, developing Persian-language cognitive training software could enhance accessibility and effectiveness for children in non-English-speaking populations.
Acknowledgments
Special thanks and sincere appreciation are extended to all the esteemed mothers and students who participated in this study.