Objectives: Attention-deficit/hyperactivity disorder (ADHD) significantly affects mental health in all age groups; however, its diagnosis remains challenging. This study evaluated the diagnostic accuracy of the Comprehensive Attention Test (CAT), a computerized tool designed to assess various aspects of attention in children with ADHD, in order to provide the groundwork for clinically applicable interpretation guidelines. Methods: Factor analysis was performed on the scores of seven CAT subtests (visual and auditory selective attention tasks, sustained attention task, flanker task, divided attention task, and spatial working memory tasks) collected from 5214 subjects aged 4–49 years diagnosed with ADHD at 15 psychiatric clinics in South Korea. Their scores were compared with those of 500 participants with no attention problems. Results: CAT subtests were grouped into either three or four factors depending on the age group. Omission error, commission error, and response time variability formed either one or two factors that effectively distinguished ADHD from non-ADHD with high sensitivity and specificity (4–5 years old: areas under the receiver operating characteristic curve [AUROCs] 0.937 and 0.779; 6–8 years old:AUROCs 0.841 and 0.878; 9–18 years old: AUROC 0.864; 19–49 years old: AUROC 0.792). The mean response time and working memory test results formed separate factors. While mean response time was a poor diagnostic indicator of ADHD, it revealed significant differences when psychiatric comorbidities were present. Conclusion CAT results can be categorized into factors reflecting inattentiveness, disinhibition, and working memory. These factors may help diagnose ADHD or detect psychiatric comorbidities.

Objectives: This study aimed to identify the effectiveness of treatment programs for children with reading (RD) or mathematics disorders (MD). Structured treatment programs were developed to improve phonological awareness and number sense among children and adolescents with RD or MD, respectively, and the effectiveness of the learning disorder treatment programs were evaluated. Methods: We used standardized, objective diagnostic, and evaluation tools not only to recruit participants with RD, MD, or comorbid attention deficit and hyperactivity disorder, but also to assess the effectiveness of the treatments regarding both improved core neurocognitive deficits of RD or MD and academic achievement. Forty children with RD or MD received one-on-one treatments from therapists. Results: In the RD group, treatment effects were observed in all subtests. In the word and paragraph reading tests, the accuracy rates and fluency improved. The results of the phonological working memory test, word–sound correspondence test, and rapid automatic naming tests also improved. In the MD group, the accuracy rate and fluency on the arithmetic test improved. An increase in the accuracy rate in the size and distance comparison tests and a decrease in the error rate in the estimation test were also observed. However, there were no improvements in reaction time in these subtests. Conclusion Learning disorder treatment programs that focus on improving phonological awareness or number sense in children with RD or MD improved achievement, phonological awareness, and number sense.

Objectives: This study verified the diagnostic validity of the Comprehensive Attention Test (CAT) for attention-deficit/hyperactivity disorder (ADHD). Methods: A total of 336 participants were recruited in this study, including 168 patients with ADHD and 168 control group participants who were one-to-one matched for sex and age. We measured selective attention (visual and auditory), sustained attention, interferenceselective attention, divided attention, and working memory in the ADHD and control groups using the CAT. The sensitivity, specificity, positive predictive value, and negative predictive value of the CAT were calculated. Results: In this study, it was found that the sensitivity and specificity of the CAT were 0.879 and 0.846 in children, 0.855 and 0.838 in adolescents, and 0.800 and 0.733 in adults, respectively. Conclusion These results indicate that the CAT has a high diagnostic validity for ADHD from childhood to adulthood.

Objectives: This study aimed to identify the psychiatric comorbidity status of adult patients diagnosed with attention-deficit hyperactivity disorder (ADHD) and determine the impact of comorbidities on neuropsychological outcomes in ADHD. Methods: The study participants were 124 adult patients with ADHD. Clinical psychiatric assessments were performed by two boardcertified psychiatrists in accordance with the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. All participants were assessed using the Mini-International Neuropsychiatric Interview Plus version 5.0.0 to evaluate comorbidities. After screening, neuropsychological outcomes were assessed using the Comprehensive Attention Test (CAT) and the Korean version of the Wechsler Adult Intelligence Scale, Fourth Edition (K-WAIS-IV). Results: Mood disorders (38.7%) were the most common comorbidity of ADHD, followed by anxiety (18.5%) and substance use disorders (13.7%). The ADHD with comorbidities group showed worse results on the Perceptual Organization Index and Working Memory Index sections of the K-WAIS than the ADHD-alone group (p=0.015 and p=0.024, respectively). In addition, the presence of comorbidities was associated with worse performance on simple visual commission errors in the CAT tests (p=0.024). Conclusion These findings suggest that psychiatric comorbidities are associated with poor neuropsychological outcomes in adult patients with ADHD, highlighting the need to identify comorbidities in these patients.

Objectives: This study investigated the effectiveness of the intervention program for elementary school students with reading disorders. Methods: The intervention program focused on phonological awareness, phonics, and decoding training applied individually to 25 children with a reading disorder by the teachers in charge for four months. To measure the efficacy, this study evaluated the word reading accuracy, fluency, and the related cognitive functions, including phonemic awareness, phonics, and rapid automatized naming using the Computerized Comprehensive Learning Test-Reading before and after the program. Results: After the intervention, improvements were observed in the following: the reading fluency score and fluency percentile in the word attack test; reading accuracy rate, fluency score, and fluency percentile in the nonword decoding test; fluency score and fluency percentile in the rapid automatized naming tests; accuracy rate in the letter-sound matching test; accuracy rate in the nonword repetition test. On the other hand, there was no significant difference in the paragraph reading fluency test. According to the subtypes of reading disabilities, children with dyslexic or mixed types improved after the intervention. Conclusion Reading accuracy and fluency of school-aged children with reading disorders improved through the intervention program by the schoolteachers.

Objectives: This study investigated the effectiveness of the intervention program for elementary school students with reading disorders. Methods: The intervention program focused on phonological awareness, phonics, and decoding training applied individually to 25 children with a reading disorder by the teachers in charge for four months. To measure the efficacy, this study evaluated the word reading accuracy, fluency, and the related cognitive functions, including phonemic awareness, phonics, and rapid automatized naming using the Computerized Comprehensive Learning Test-Reading before and after the program. Results: After the intervention, improvements were observed in the following: the reading fluency score and fluency percentile in the word attack test; reading accuracy rate, fluency score, and fluency percentile in the nonword decoding test; fluency score and fluency percentile in the rapid automatized naming tests; accuracy rate in the letter-sound matching test; accuracy rate in the nonword repetition test. On the other hand, there was no significant difference in the paragraph reading fluency test. According to the subtypes of reading disabilities, children with dyslexic or mixed types improved after the intervention. Conclusion Reading accuracy and fluency of school-aged children with reading disorders improved through the intervention program by the schoolteachers.

Objectives: Adult attention-deficit/hyperactivity disorder (ADHD) is an important mental health problem that needs resolution, especially considering the high rates of ADHD continuation from childhood to adolescence/adulthood and the high prevalence of ADHD in adults. Adults with ADHD have lifelong negative impacts and require close monitoring with long-term follow-up. Hence, the establishment of a Korean practice parameter for adult ADHD is necessary to minimize discontinuation of treatment and enable information sharing among Korean mental health professionals. Methods: The Korean practice parameter was developed using an evidence-based approach consisting of expert consensus survey coupled with literature review. Results: According to the expert consensus survey, the most commonly used diagnostic methods were clinical psychiatric interview (20.66%) and self-report scales (19.25%) followed by attention (14.71%) and psychological tests (14.24%). Key evaluation instruments currently available in Korea are the World Health Organization Adult ADHD Self-Report Rating Scale, Korean Adult ADHD Rating Scale, Diagnostic Interview for ADHD in Adults, Barkley Deficits in Executive Functioning Scale for adults, Comprehensive Attention Test, Conners’ Continuous Performance Test, and the subtests of Wechsler Adult Intelligence Scale, Digit Span and Letter-Number Sequencing. Although pharmacotherapy is recommended as the first-line of treatment for adult ADHD, we recommend that it be followed by a multimodal and multidisciplinary approach including psychoeducation, pharmacotherapy, cognitive behavior therapy and coaching. Conclusion The Korean practice parameter introduces not only general information for the diagnosis and treatment of adult ADHD on a global scale, but also the process of diagnosis and treatment options tailored to the Korean population.

Objectives: Adult attention-deficit/hyperactivity disorder (ADHD) is an important mental health problem that needs resolution, especially considering the high rates of ADHD continuation from childhood to adolescence/adulthood and the high prevalence of ADHD in adults. Adults with ADHD have lifelong negative impacts and require close monitoring with long-term follow-up. Hence, the establishment of a Korean practice parameter for adult ADHD is necessary to minimize discontinuation of treatment and enable information sharing among Korean mental health professionals. Methods: The Korean practice parameter was developed using an evidence-based approach consisting of expert consensus survey coupled with literature review. Results: According to the expert consensus survey, the most commonly used diagnostic methods were clinical psychiatric interview (20.66%) and self-report scales (19.25%) followed by attention (14.71%) and psychological tests (14.24%). Key evaluation instruments currently available in Korea are the World Health Organization Adult ADHD Self-Report Rating Scale, Korean Adult ADHD Rating Scale, Diagnostic Interview for ADHD in Adults, Barkley Deficits in Executive Functioning Scale for adults, Comprehensive Attention Test, Conners’ Continuous Performance Test, and the subtests of Wechsler Adult Intelligence Scale, Digit Span and Letter-Number Sequencing. Although pharmacotherapy is recommended as the first-line of treatment for adult ADHD, we recommend that it be followed by a multimodal and multidisciplinary approach including psychoeducation, pharmacotherapy, cognitive behavior therapy and coaching. Conclusion The Korean practice parameter introduces not only general information for the diagnosis and treatment of adult ADHD on a global scale, but also the process of diagnosis and treatment options tailored to the Korean population.