The Variable Care Test or TOVA is one of the most effective tests available to the specialist to assess attention, hyperactivity, impulsivity and serves to support clinical diagnosis. Therefore it is widely used in the world. The Test of Variables of Attention does not harm or is invasive and has been carried out for more than 25 years. The person who undergoes the test simply has to press a button.
The TOVA was developed by Dr. Lorenzo Greenberg, Professor Emeritus and Head of the School of Child and Adolescent Psychiatry at the University of Minnesota.

The Test of Variables of Attention (T.O.V.A.) is an objective, accurate, and FDA cleared continuous performance test (CPT) that measures the key components of attention and inhibitory control. The T.O.V.A. is used by qualified healthcare professionals as an aid in the assessment of attention deficits, including attention-deficit/hyperactivity disorder (ADHD), in children and adults.

The T.O.V.A. is a culture- and language-free, sufficiently long computerized test that requires no left/right discrimination or sequencing. Responses to visual or auditory stimuli are recorded with a unique, highly accurate (±1 ms) microswitch. The T.O.V.A. calculates response time variability (consistency), response time (speed), commissions (impulsivity), and omissions (focus and vigilance). These calculations are then compared to a large age- and gender-matched normative sample, as well as to a sample population of individuals independently diagnosed with ADHD. These comparison results are used to create an immediately available, easy-to-read report.

The T.O.V.A. provides information that is not available through self-report or the report of others. It is used along with a clinical interview and subjective measures (such as behavior ratings) for a more comprehensive picture of academic, social, and personal performance and impairment. T.O.V.A. results should only be interpreted by qualified healthcare

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