Continuous Performance Test of Attention

The TOVA (Test of Variables of Attention)  is a continuous performance task that measures attention, impulsivity and processing speed over time. The results are compared with same aged peers.

What is involved?

The entire process takes 1 hour. The test takes 30 minutes to complete and results are provided immediately following.


This test can be used as a preliminary screening tool for ADHD or processing speed problems. It can also be used as a pre and post evaluation to measure progress in a treatment program such as medication or executive function training.


Research and Education: The T.O.V.A.® is the most widely used objective measure of attention in the world, and is considered the “Gold Standard” among measures of its type.

You can download a listing of over 260 peer-reviewed journal articles (and many more conference papers, theses, dissertations, and more… over 400 in total!) on or using the T.O.V.A. here.

T.O.V.A. Features

Pre-school test (ages 4-5)
School-age test (ages 6-17)
Adult test with embedded performance validity (ages 17-80+)
Visual and Auditory Test formats
Custom-designed hardware precisely measures response time (±1 ms)
Language- and culture-free stimuli
Standardized multimedia test instructions in 8 languages
T.O.V.A. Behavioral Observation Form
Extensively normed by gender for ages 4 to 80+

Supported T.O.V.A. Research

The TOVA Company is committed to supporting research that includes objective assessment of attention. Researchers all over the world are using the T.O.V.A. at a dramatically reduced cost. If you would like to include the T.O.V.A. in your work, please write to us at [email protected] for more information and a research application. We are also committed to supporting an empirically-based model of assessment that integrates multiple sources of information in regarding attention and inhibitory control through workshops that we teach all over the world.

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