Posner Cuing: Attention
React to target; cue may mislead
About this trainer
A small marker briefly flashes or points to one side of the screen, then a target appears somewhere and you respond to it as fast as you can. Most of the time the cue points to where the target really shows up (a valid cue), but sometimes it misleads you (an invalid cue) — the gap between your fast and slow reactions is the whole point of the exercise.
What it develops
It trains covert spatial attention: the ability to shift your mental 'spotlight' to a location without moving your eyes, to lock onto a useful cue, and to disengage and redirect when the cue turns out to be wrong. In short, it sharpens how quickly and flexibly you allocate attention across the visual field.
History
It grew out of cognitive psychology's effort in the late 1970s to measure attention separately from eye movements. After Michael Posner's 1980 paper it became one of the most reproduced setups in the field, spreading into neuropsychology clinics (to assess hemispatial neglect, ADHD and the effects of focal brain damage) and later into countless lab and online versions.
Who created it — and when
Created by the American psychologist Michael I. Posner, who introduced it in his 1980 paper 'Orienting of Attention' (Quarterly Journal of Experimental Psychology). The reflexive variant and the 'inhibition of return' effect were described by Posner and Yoav Cohen in 1984.
How to train
Keep your eyes fixed on the centre and resist the urge to dart them toward the cue — the skill is moving attention, not the eyes. Practise both cue types: a central arrow you choose to follow (endogenous) and a peripheral flash that grabs you automatically (exogenous). Pay attention to invalid trials, since learning to let go of a wrong cue and re-aim is where most of the gain lies.
How long to practise
Short sessions work best: roughly 5 to 10 minutes, a few times a week. It is fast and repetitive, so attention fades quickly — stop before it becomes mechanical rather than grinding through long blocks.
Evidence base
What is solidly established is the basic effect itself: people respond faster to validly cued locations and slower to invalidly cued ones, and at longer cue-target gaps the advantage flips into 'inhibition of return.' These findings replicate robustly and the task is a trusted laboratory measure. What is far weaker is the idea that drilling it makes your everyday attention, reading or general intelligence better — broad 'transfer' from this kind of practice is largely unproven, and it was designed to measure attention, not to upgrade it. Treat improvement mainly as getting better at this specific task.
Recommendations
Glue your gaze to the centre dot and move only your attention — if you catch your eyes drifting to the cue, slow down and reset.
FAQ
Am I allowed to look at the cue?
No — the whole point is to shift attention while keeping your eyes on the centre. Moving your eyes turns it into a different, easier task.
Why am I sometimes slower right where the cue pointed?
If enough time passes between the cue and the target, attention is pushed away from the already-checked spot. That slowing is called inhibition of return, and it is a normal, well-documented effect.
Will this make me more focused in daily life?
It reliably makes you quicker at this task, but evidence that the benefit spreads to everyday concentration or studying is weak. Use it as a precise attention drill, not a cure-all.
Variants
Common variations include endogenous cues (a central arrow or symbol you interpret) versus exogenous cues (a peripheral flash that pulls attention automatically); changing the delay between cue and target to expose facilitation versus inhibition of return; varying how often the cue is valid; and discrimination versions where you must identify the target rather than merely detect it.