Executive-function delay (and its cascade)

Barkley’s model names seven executive functions (self-awareness, inhibition, nonverbal and verbal working memory, emotion regulation, self-motivation, planning) that in ADHD develop on average about 30% behind — his clinical rule of thumb (roughly 20–45%), not a precise constant — and, crucially, are interlinked. A problem in one domain does not stay there; it cascades into the others: an emotional-regulation challenge (e.g. after rejection) is enough to kick off impulsivity, which then proposes extreme, dangerous solutions like ‘quit the job’. The same delay explains why external scaffolds (lists, alarms, rigid routines) work — they compensate for a deficit that willpower cannot close. Knowing this is a neurobiological delay, not a character flaw, removes shame and lets you intervene at the weakest link instead of just ‘trying harder’. (Executive-function model and the ~30% estimate: Russell Barkley.)