How Does Anxiety Influence the Results and Interpretation of ADHD Assessments?

PostedSeptember 10, 2025

UpdatedSeptember 10, 2025

ByMy Patient Advice

Author: Victoria Rowe, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Anxiety and ADHD assessments are often linked, as anxiety can significantly influence how individuals perform during testing and how results are interpreted. Anxiety can create assessment bias, making it difficult for clinicians to distinguish between the symptoms of ADHD and those caused by anxiety. This overlap can lead to interpretation difficulties, potentially skewing results and leading to false positives in ADHD tests.

Anxiety shares several symptoms with ADHD, including inattention, restlessness, and difficulty concentrating, which can complicate the diagnostic process. When a person is anxious during an ADHD evaluation, their test performance may be affected, making it hard for the clinician to assess ADHD symptoms accurately. It Is crucial for the clinician to consider the influence of anxiety during the assessment to avoid misinterpretation.

Impact of Anxiety on ADHD Assessment Results

Anxiety can affect ADHD assessment results by hiding or imitating symptoms, which may lead to misdiagnosis or missed conditions.

Assessment Bias:

Anxiety can cause a person to be hypervigilant or distracted, affecting their ability to focus on tasks or answer questions accurately. This may lead to results that suggest ADHD when anxiety is the actual cause of the symptoms.

Interpretation Difficulties:

A clinician may struggle to separate ADHD symptoms from those caused by anxiety, especially if the anxiety is not recognised or reported. This can lead to an inaccurate diagnosis or treatment plan.

False Positives in ADHD Tests:

False positives may occur if anxiety causes someone to exhibit symptoms commonly associated with ADHD, like restlessness or difficulty maintaining attention. Properly accounting for anxiety can help prevent this from happening.

When undergoing an ADHD assessment, it is important to be open about any anxiety symptoms, as this can help the clinician differentiate between the two conditions and ensure an accurate diagnosis. For personal consultations on the ADHD testing, visit providers like ADHD Certify.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Cognitive and neuropsychological testing.

Victoria Rowe, MSc

Author

Victoria Rowe is a health psychologist with a Master’s in Health Psychology and a BS in Applied Psychology. She has experience as a school psychologist, conducting behavioural assessments, developing individualized education plans (IEPs), and supporting children’s mental health. Dr. Rowe has contributed to peer-reviewed research on mental health, including studies on anxiety disorders and the impact of COVID-19 on healthcare systems. Skilled in SPSS, Minitab, and academic writing, she is committed to advancing psychological knowledge and promoting well-being through evidence-based practice.

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.