T.O.V.A. - Test of Variables of Attention
What is T.O.V.A.?
The Test of Variables of Attention (T.O.V.A.) is a computerized, continuous performance test used to objectively assess attention and impulse control, most often in the evaluation of ADHD and other attention-related conditions.
It measures key aspects of attention, including response time, response time variability, omission errors (missed targets), and commission errors (responses to non‑targets).
How the T.O.V.A. is administered?
The test is given on a computer in a quiet, supervised setting, where the person responds with a simple button or microswitch to visual or auditory stimuli over about 20–22 minutes.
The examiner provides standardized instructions, has the person complete a brief practice run, and then monitors silently while the full test runs in two parts with different target frequencies to assess sustained attention and impulse control under varying levels of demand.
