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Restricted (R)
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Online Cognitive Abilities Test (CogAT) & Cognitive Abilities Test (CogAT) Screening Form
The following qualifications are required to purchase this product.
Schools (SCH)
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The following qualifications are required to purchase this product.
PAT Teaching Resources Centre
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For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
The following qualifications are required to purchase this product.
Restricted (R)
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
Autism Detection in Early Childhood (ADEC) 2nd Edition
The following qualifications are required to purchase this product.
Bachelor's Degree
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For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
The following qualifications are required to purchase this product.
Bachelor's Degree
Please login or create a new account to register your qualifications. You can register within your account via My Profile > My Qualifications.
For further assistance please contact ACER Sales Support Team on +61 3 9277 5656 or email sales@acer.org.
Purpose: Help teachers, parents, and clinicians identify attention-deficit/hyperactivity disorder (ADHD) in individuals and estimate its severity Age: 5-17 years Time: 3-5 minutes
Based on the ADHD diagnostic criteria in the Diagnostic and Statistical Manual of Mental Disorders–Fifth Edition (DSM-5), the Attention-Deficit Hyperactivity Disorder Test 2nd ed. (ADHDT-2) can assist in estimating the severity of ADHD in children and adolescents from 5-17 years.
The test has 33 clearly stated items that describe the characteristic behaviours of persons with ADHD, with items grouped into two subscales: Inattention and Hyperactivity/Impulsivity. It yields standard scores, percentile ranks, severity levels, and probability of ADHD.
New Features of the ADHDT-2:
Items and subscales reflect DSM-5 diagnostic criteria for ADHD
The Hyperactivity and Impulsivity subscales were merged into one subscale
The overall number of items was reduced to 33
An interpretation guide in the Examiner’s Manual allows the examiner an easy and efficient method for assessing the probability of attention-deficit/hyperactivity disorder and the severity of the disorder
Internal consistency (content sampling) reliability coefficients for the subscales exceed .85 and the ADHD Index exceeds .96.
Test-retest (time sampling) reliability coefficients exceed .80 for subscales and .84 for the ADHD Index.
Interrater reliability intraclass coefficients exceed .80 and .90 for the ADHD Index.
Diagnostic accuracy studies indicate that the ADHDT-2 is able to discriminate children with attention-deficit/hyperactivity disorder from typical children without ADHD (i.e., sensitivity = .90, specificity = .82, ROC/AUC = .95.
Confirmatory and exploratory factor analyses demonstrate the theoretical and empirical validity of the subscales.
James E. Gilliam
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login or register to proceed
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Attention-Deficit/Hyperactivity Disorder Test - 2nd Edition (ADHDT-2)
The following qualifications are required to purchase this product.
S1: Psychology
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