
Working memory tests ask you to hold information while being actively interrupted. Holding a sequence on its own is easy; holding it through an unrelated question is the actual test.
It is a core requirement of controlling — you hold a clearance, a callsign and a level while someone else is talking to you. Both FEAST and the ATSA assess it directly.
Rehearse aloud or sub-vocally between interruptions rather than trying to hold a visual impression. Verbal rehearsal survives interference far better than a picture does.
A field of dots is shown and one lights up red. You memorise its position and the order the dots light in — but between each dot, an unrelated question appears that you must answer before the next one. Then you click the dots back in order.
The interference is the test. Holding a sequence is easy; holding it while something else demands your attention is the thing controllers actually do, and it is why both FEAST and the ATSA assess it.
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