Children younger than 8 years old complete three tasks from the TEA-Ch2 J version. Children aged 8 and above complete the TEA-Ch2 A version that includes more difficult adaptations of the same three tasks plus one additional measure of set-switching.  

The Simple Reaction Time subtest measures attention-based reaction time. Children focus on a square centred on a blank screen and press a key as soon as blue blob appears anywhere on screen. The task lasts six minutes on average and average response time in seconds is scored.  

Sustained attention is measured using the Vigil (8 years +) and Barking (< 8 years) subtests that require children to count in their heads the number of auditory items (bleeps or barks) heard at random intervals over ten trials. The number of trials correct is scored.  

Visual selective attention is assessed using the Hector Cancellation (8 years+) and Balloon Hunt (< 8 years) subtests. Both are time-limited cancellation tasks requiring children to cross out as many target items (either balloons or circles) as possible in a visual scene presented on paper. There are six scenes in total for Hector Cancellation and four for Balloon Hunt. Each varies by the number of distractor items. The total number of targets correctly identified across all scenes is recorded.  

The switching task, Reds, Blues, Bags and Shoes, is administered only to children over the age of 8 years. Children first sort four repeating visual items (red or blue bags and shoes) according to colour (red or blue) or use (worn on the hand or foot). In further trials children must switch between the sorting rules after every five items. The raw score is mean reaction time on switch trials. For TEACH-2 tasks raw scores are converted to scaled scores (M=10, SD=3). 

Manly T, Anderson V, Crawford J, George M, Underbjerg M, Robertson I. Test of everyday attention for children, second edition (TEA-CH2). London, UK: Pearson; 2016