ENAC M2-back couleurs
IntellectualPSY0Coloured squares come up one at a time. From the third on, say whether each one is the same colour as the one two before it. The exam format is 42 colours, 40 answers, in 2:06.
Overview
Every answer is easy on its own. Keeping the last two colours in order for 40 answers is the test. Hold them as a pair, oldest first. When a new square comes, compare it with the first colour of the pair, answer, then drop that one and put the new colour at the end. On a Yes the pair just swaps round, so you never fall out of step. Say the names to yourself, not just their first letters: blue and black, pink and purple start the same way. If you lose the thread, don't freeze. Answer anyway, since a blank scores nothing either, and two squares later your pair is full again. On the day how fast you click counts too, though less than being right, so click as soon as you know.
Assessments
Part of the Air France Cadets selection at ENAC (PSY0) battery as “M2-back couleurs”.
The stimulus changes between sittings: the September 2026 sitting ran it on 62 digits, the September 2024 and 2025 ones on 42 colours, with nothing to name them by. This is the colour form: train the digits first and keep this one in case colours return.
Battery mappings are based on public information and may change.
One colour at a time
- The first 2 colours get no question. Just keep them in mind.
- Every colour after that asks one thing: is it the same colour as the one two before it?
- The one just before doesn’t count. The same colour twice in a row is No, unless two back was that colour too.
- In the exam, a new square comes every 3 seconds with Yes and No under it, in the place of the last one. Your first click is your answer, and the next colour comes on time whatever you do.
8 colours, 6 answers
Work out each answer from the third colour on, then check.
The same eight, one answer at a time
There’s no clock here. Each colour waits for you, and each answer is corrected before the next.
Game Phases
Hold the Last Two
Keep the last two colours as a pair, oldest first, and say their names to yourself.
Compare With the Oldest
Check the new square against the first colour of your pair, answer, then swap the new one in.
Just Before Doesn't Count
The same colour twice in a row is No, unless two back was that colour too.
One Click, Straight Away
Your first click is your answer. Get it in while the square is up.
More Practice
Memory
10 exercisesENAC M2-back numérique
Digits come up one at a time, a new one every 3 seconds. From the third one on, you say for each digit whether it's the same as the one 2 before it. The exam format is 62 digits, 60 of them with a question.
ENAC Memory N-Back
Letters come up one at a time, and for each one you say whether it’s the same letter as the one three, four or five before it. Capitals and small letters count as the same. The exam format is two tests back to back: a 3-back then a 4-back for ENAC EPL, a 4-back then a 5-back for Air France Cadets. It hasn’t been set since 2020.
Visual N-Back
Shapes in colours go past one at a time. On every one, say whether it is the same shape AND the same colour as the one a few places back — and the lag you are matching against changes from block to block.
Associative Memory
Memorise a set of symbol–number pairs, then after a short delay recall which number went with each symbol.
Acoustic Memory Test
Hear a spoken sequence once, hold it through a filled delay, and type it back — exactly in order.
Parameter Memory Test
Aviation parameters flash up on a dark display, then vanish. Reproduce the data row by row, from memory, before the clock runs out.
Grid Challenge
A dot memory test in the format of gridChallenge, Aon's official name for its working memory module: dots flash one by one on a scattered field, quick yes or no puzzles interrupt between flashes, then you click the dots back in order.
ENAC Memory Calculation
You get a calculation, then a letter, then another calculation and another letter, and so on. At the end of the board, you type the letters back in the order they came. The exam format is 20 boards, from 3 letters up to 9, with 5 seconds a calculation and 1 second a letter.
ENAC Running Comparison
A stream of simple calculations, one at a time. For each one, tick whether its result is identical to or different from the one it's compared with: the result just before, the one two back, or a fixed value X, depending on the block. The exam format is 100 answers in four blocks of 25, about 12 minutes.
ENAC Reversed Series
Digits come up one at a time in the same spot, a second each. When they’ve gone, you type them back in reverse, the last one first. The sequences grow from 4 to 9 digits. The exam format is 12 sequences, about 3:30.