How do you play the attentional blink test?

Watch the rapid stream for the first target X and a possible second target A, B, C, or D. After playback, choose the second target or NONE.

What is lag in this game?

Lag is the number of stream positions between the first and second targets. Standard mode balances ten short-lag and ten long-lag sequences.

What if no second target appeared?

Choose the large NONE button. Target-absent sequences are mixed into both lag groups.

Is this a clinical attentional blink assessment?

No. This is a short entertainment and personal-practice game, not a clinical or diagnostic measurement.

RAPID VISUAL STREAM · 20 SEQUENCES

ATTENTIONAL BLINK TEST

Find the first target X, then remember the second target letter—or notice that it never appeared.

SEQUENCES0 / 20

Play 20 balanced sequences: 10 short lag and 10 long lag. Mistakes count, then play continues.

CORRECT0

ACCURACY—

SHORT LAG—

LONG LAG—

READY?

WATCH FOR X, THEN A–D

Digits are distractors. After the stream, answer with A, B, C, D, or NONE.

STREAM READY

Use the large answer buttons on any device. Keyboard: A, B, C, D, or N for NONE. Inputs during playback are ignored.

HOW TO PLAY

Catch the second target after X

01
Start a sequence and keep your eyes on the center of the rapid digit stream.
02
Notice the first target X, then look for a second target A, B, C, or D.
03
After playback stops, choose the second target or NONE before the answer bar empties.

RAPID VISUAL ATTENTION

Why use two targets?

The first target captures attention. The second target follows after either a short or long number of stream positions, challenging you to notice and remember it.

Standard mode gives each lag group equal weight and includes target-absent sequences, so guessing one favorite letter is not enough.

ENTERTAINMENT CHALLENGE

Not a clinical assessment

This short browser activity is for entertainment and personal practice. It is not a validated neuropsychological or diagnostic attentional blink test.

Display timing, browser scheduling, device refresh rate, vision, familiarity, and practice can all affect a score.

QUESTIONS

Attentional blink test FAQ

What should I look for?

Find X first, then remember whether A, B, C, or D appeared later in the same rapid stream.

What does short or long lag mean?

It describes how many stream positions separate the first and second targets. Standard mode includes ten of each.

When should I choose NONE?

Choose NONE when the stream contained X but no second target letter A, B, C, or D.

Is this a clinical test?

No. It is a recreational attention game and should not be used for diagnosis or medical decisions.