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One of Clinical Psychologists' Biggest Challenges in ADHD Assessments: Uncertainty
January 26, 2026· Pınar Nur Eroğlu

One of Clinical Psychologists' Biggest Challenges in ADHD Assessments: Uncertainty

Are behavioral checklists and surveys enough for an accurate ADHD diagnosis? We tackle the crucial question: "How to be more objective in ADHD assessment?" and explore ways to minimize margins of error in clinical settings. Discover how integrating standardized continuous performance tests and EEG data elevates diagnostic reliability.

Uncertainties when evaluating Attention Deficit Hyperactivity Disorder (ADHD) in children are one of the biggest struggles experienced by clinical psychologists. 

  • How can we make sure that a child has attention deficit?
  • How reliable are parents' feedback and observations?
  • Does a child really have ADHD, or are his attention problems due to something else?

These questions are critically important issues that clinical psychologists encounter from time to time. Some symptoms seen with ADHD may cause confusion with different diseases, or an individual who develops different diseases together with ADHD may experience difficulties in the diagnosis process and treatment. The main reason for this is that ADHD is often seen together with such diagnoses and can disguise itself under certain symptoms. For example, one of the diseases that occurs together with ADHD is dyslexia. The late-developing language/speech region in the frontal lobe is one of the common causes of dyslexia, ADHD and autism. Depression may occur in some children and adolescents with ADHD. This mood can be seen as a result of emotional-control disorder. Obsessive Compulsive Disorder (OCD) is one of the psychiatric conditions that can accompany Attention Deficit Hyperactivity Disorder (ADHD). OCD is when an individual gets stuck on certain thoughts despite knowing that they are irrational and feels the need to perform repetitive behaviors to cope with these thoughts. If the person does not perform these behaviors, he may feel intense uneasiness, anxiety or fear. Especially when seen together with ADHD, the symptoms of OCD can make the individual's daily life more difficult. Distraction, concentration problems and impulsivity seen in individuals with ADHD, combined with repetitive thoughts and rigid behaviors caused by OCD, can cause additional difficulties in both academic and social life.

Additionally, ADHD should not be considered as a disorder that only occurs in childhood, but a holistic approach should be adopted, taking into account its effects in adulthood. Contrary to popular belief, coping with ADHD is not a process that gets easier with age. Although symptoms such as hyperactivity and impulsivity, which are prominent in childhood, decrease in adulthood, difficulties with functions such as attention, organization, time management and self-regulation become more evident.

Why Is It So Difficult to Diagnose ADHD? 

ADHD symptoms can vary in severity and present differently among individuals.  Dealing with the complexities of an ADHD diagnosis can be overwhelming for individuals, families, and educators. This can make it difficult for healthcare professionals to diagnose ADHD, especially when symptoms are mild or do not fit the stereotypical "hyperactive" symptom of ADHD.

  • Impulsivity or just age-appropriate activity?
  • Is it lack of attention or difficulty focusing due to anxiety?
  • Hyperactivity or a high energy child?

Such questions may not be answered clearly with clinical observation and survey forms alone. Care should be taken to ensure that the information provided by parents or teachers is not subjective. Because children's behavior may vary in different environments. On the other hand, underdiagnosis may occur, especially in girls and adults, where symptoms may present differently. For example, boys with ADHD may exhibit extreme hyperactivity, while girls often have trouble focusing or inattention, and this can be challenging to detect. Additionally, cultural factors and societal expectations may influence diagnosis rates. Some individuals may avoid seeking a diagnosis due to fear of stigma or labeling, which may cause them to mask their symptoms.

How to Be More Objective in ADHD Assessment?

In conjunction with a healthcare professional experienced in treating ADHD, it is possible to develop a personalized treatment plan that meets the individual's specific needs and preferences. This may include a combination of drug and non-drug treatments, such as psychotherapy, behavioral interventions, and lifestyle changes.

Recognizing the symptoms of ADHD is also crucial for early intervention. If you are curious about the details of the symptoms, you can take a look at our web article titled "What are the Symptoms of ADHD?" on our blog page.  Studies show that early diagnosis can significantly improve long-term outcomes for both children and adults. For example, early intervention in children can give them coping strategies that reduce future academic difficulties and social difficulties.

One of the reliable methods used in the early diagnosis phase is scientific and objective measurement tools such as Continuous Performance Tests (CPT). CPT tests provide reliable, concrete data by measuring a child's attention span, impulsivity, reaction time and error rates. In this way:

  • A stronger basis is formed for distinguishing between ADHD and other attention problems.
  • The diagnostic process becomes more reliable.
  • More accurate decisions can be made when creating a treatment and intervention plan.

Objective tests provide a powerful support mechanism in clinical psychologists' decision-making process. CPT tests can be used not only in the evaluation of ADHD but also in monitoring the treatment process. For example, when a child is given attention training or medication, his or her development can be monitored more objectively with CPT results.