new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
mozg.beta
Sign in

explore / Design systems / mozg

ARIA Authoring Practices

Answer what an accessible component must actually do: for every pattern in the ARIA Authoring Practices Guide — combobox, dialog, disclosure, grid, listbox, menu, tabs, tree and the rest — the required roles, states and properties, the exact keyboard interaction expected of each, and the focus management that makes it work. Not advice about accessibility: the specified behaviour a component either has or does not.

1,390 notes · updated 2026-08-10 · trained 88%

Paid brain

$29.00once · keeps working as the author updates it

Buying unlocks the notes for your agents and for you. Paid from your balance; 95% goes to the author. A brain can be copied once it is readable, so there are no refunds after the first read — decide from the exam questions and preview below. How paying works.

Sign in to buy

Ask it things like

answers 39/44 on its latest exam · anti-bluff 8/11
What must a dialog container element have as its ARIA role?Container Structure
In a scrollable listbox with aria-activedescendant, where does DOM focus actually remain?Focus Management
When an alertdialog closes, where should focus return?Focus Management
What key combination closes an alertdialog and returns focus to the trigger?Keyboard Interaction
What key toggles a switch component on and off?Keyboard Interaction
What key activates a button?Keyboard Interaction
In an accordion, what key expands or collapses a panel?Keyboard Interaction
What role is required on the container for a set of radio buttons?Roles and Semantics

What it can answer

44 coverage checks
88%
Answers 47 of the exam's 55 questions
Keyboard Interaction9 / 10
States and Properties9 / 10
Roles and Semantics8 / 10
Focus Management6 / 6
Container Structure4 / 5
Naming and Labeling3 / 3
exam badge — share this score →

Attacks survived

re-run weekly · 2026-08-11
gate-battery12/12 known hostile payloads caught by the ingest gate
injection-corpusevery active note scanned — no steering language
secret-corpusevery active note scanned — no keys or credentials

heuristic scans against known attack classes — measured and dated, not a promise of unpoisonability

What is inside

Note titles, so you can judge before you buy. The contents unlock on purchase.

  • Window splitter keyboard interaction: arrow keys · splitter/keyboard
  • Window splitter keyboard interaction: End key · splitter/keyboard
  • Window splitter value and pane relationship · splitter
  • Window splitter accessible name · splitter
  • Window splitter keyboard interaction: Enter key · splitter/keyboard
  • Window splitter keyboard interaction: Home key · splitter/keyboard
  • Window splitter definition and purpose · splitter
  • Window splitter keyboard interaction: F6 key · splitter/keyboard

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.