How Many Items Does the Adult ADHD Screening Tool Include?

PostedSeptember 11, 2025

UpdatedSeptember 11, 2025

ByMy Patient Advice

Author: Harriet Winslow, BSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

The adult ADHD screening tool item count varies depending on the version used, but one of the most common tools is the Adult ADHD Self-Report Scale (ASRS), which contains 18 questions. This aligns with the diagnostic criteria for ADHD and covers both inattentive and hyperactive-impulsive symptoms. Knowing the adult ADHD screening tool item count helps individuals and clinicians understand the screener length and what to expect before starting the process.

The number of questions in these tools is designed to balance thoroughness with ease of completion. The ASRS, for example, is divided into two parts: Part A contains 6 questions that act as a quick screener, while Part B contains the remaining 12 questions for a more complete picture. The tool format is typically a self-report questionnaire, where individuals reflect on their experiences over the past six months.

How It Helps

Clarity and Structure

Understanding the adult ADHD screening tool item count ensures that people are prepared for the screener length and know that it is a structured process.

Guiding Assessment Decisions

By reviewing the number of questions and responses, clinicians can determine whether a full diagnostic evaluation is necessary. The clear tool format also helps capture both inattentive and hyperactive-impulsive traits efficiently.

In summary, the adult ADHD screening tool item count provides insight into the scope of the assessment, making it easier for both individuals and professionals to engage with the screening process effectively.

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Rule-outs for other conditions.

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.