The MOXO Test; What Does It Measure, What Can We Learn from It, and When Should We Seek a Diagnostic Evaluation?

During the test, various stimuli are presented on the computer screen. The person taking the test is asked to respond to a defined target stimulus and to refrain from responding to other stimuli. Visual and auditory distractors also appear throughout the task, simulating some of the disruptions we encounter in our everyday environment.

The test includes different stages, allowing performance to be examined under changing conditions.

Age-appropriate versions are available: for children aged 6-12 and for adolescents and adults aged 13 and older. The task itself lasts approximately 14 minutes for children and approximately 18 minutes for adolescents and adults.

The MOXO test examines four performance measures, each addressing a different aspect of functioning during the task.

Attention (Attentiveness): The ability to identify a target stimulus and respond to it according to the instructions. This measure concerns accuracy in identification and response.

Timing (Timeliness): The ability to respond correctly within the designated time window. A person may identify the appropriate stimulus, but respond late.

Impulsivity (Impulsiveness): Responses to stimuli that do not require a response. This measure examines the ability to refrain from an inappropriate response.

Excessive Responsiveness (Hyper-Reactivity): Excessive keypress responses, such as repeated presses or presses that are not required during the task. This is a measure of reactive behavior within the test, rather than a direct measurement of bodily movement in everyday life.

The measures allow distinctions between different types of performance difficulties, but do not directly equate to the full range of clinical ADHD symptoms.

One of the prominent features of MOXO is the inclusion of visual and auditory distractors as an integral part of the test. This allows examination of whether and how performance changes in the presence of different types of distractions. For example, one person may show relatively stable performance without distractors but experience greater difficulty when auditory stimuli appear. Another person, in contrast, may show difficulties that do not change significantly across conditions.

These differences may add information about an individual performance profile, but do not establish how the person will function in every situation outside the testing room.

At the end of the test, a report presents the person’s performance on the different measures, including a comparison with norms appropriate to their age and sex in the diagnostic version.

The report may also show changes in performance across the stages of the task and the effects of different types of distractors.

Rather than relying only on an overall score, it is possible to examine whether there are differences between the measures, whether performance is consistent, and whether changes are apparent under particular conditions.

Professional interpretation should also take into account the testing conditions, the degree of cooperation, and factors that may affect performance, such as fatigue, sleep and medication.

Not necessarily. Some people with ADHD can demonstrate normal performance on a structured computerized task, even when they face significant difficulties in everyday life. Conversely, atypical performance on the test does not necessarily indicate ADHD, because other factors may affect attention and response control. Therefore, MOXO is not a test that independently confirms or rules out ADHD.

A clinical diagnosis is based on combining information from different sources, in accordance with accepted professional criteria.

The test may be relevant when ADHD is suspected and additional quantitative information is needed as part of a diagnostic process. It may also help when there are differences between reports from different settings, or when a professional wishes to examine specific aspects of attention functions in a focused way. In appropriate cases, repeat testing can be used to compare performance under different conditions or to examine changes following an intervention, including medication, in accordance with professional guidance. However, not everyone referred for an ADHD diagnostic evaluation necessarily needs a computerized test. The decision should be based on the clinical question and the expected benefit of the test.

It is advisable to arrive after sufficient sleep, in accordance with the instructions provided in advance, and to ensure that the testing environment is technically suitable.

It is important to inform the professional about medications taken regularly, including medications that affect attention or emotional well-being.

Do not stop or change medication before the test without explicit instructions from the treating physician.

There is no need to practice for the test or try to achieve a particular score. The purpose is to document authentic performance under the testing conditions.

The value of MOXO lies not only in the scores that appear in the report, but in how the information contributes to understanding the person who was tested.

Two people may show similar results yet face entirely different difficulties in everyday life. It is therefore important to consider the findings alongside personal history, academic or occupational functioning, clinical reports and the purpose of the referral.

The test provides data on attention performance under defined conditions. Professional assessment gives these data meaning and context.

I conduct online MOXO tests for children aged 8 and older, adolescents and adults, together with a professional assessment of the findings and recommendations for next steps as needed.

At the end of the process, a results report and a professional summary can be provided (in multiple languages), helping to understand the performance profile and its significance in the context of the reported difficulties.

You are welcome to contact me to arrange a MOXO test and discuss its suitability for your needs.