The Frankfurt Attention Inventory (FAIR) measures attention as an ability to concentrate, i.e. accurately and quickly discriminate visualy resembling signs while ignoring irrelevant information.

The Frankfurt Attention Inventory (FAIR) was published 1996 and a revised version FAIR-2 is available since 2011.

The FAIR grew out of a thorough theoretical and experimental analysis of the then incumbent Test of Attention (d2), which in a similar form was part of the German test for admission to medical studies (TMS). During my psychology studies I, together with Prof. Dr. Moosbrugger, published on probabilistic shortcomings of the d2, and then in my Master thesis provided experimental evidence that certain processing strategies or concentration deficits indeed led to a performance over-estimate in the d2. Since the author of the d2 initially did fight back with no sound arguments instead of following our recommendation to revise the test d2, we decided to conduct a thorough development of a fair non-cheatable concentration tests. Doing so, we introduced 10 requirements for a valid diagnostic of attention.