Finding the twin in the crowd
One feature pops out instantly; a COMBINATION of features must be checked face by face. That is why the twins hide.
A red dot among blue ones jumps out with no effort: single features are free.
A red SQUARE among red circles and blue squares must be searched item by item.
Binding features together takes attention, and that binding gets quicker with practice.
Then and now
Feature integration grew into Guided Search, now in its sixth version: one of the longest continuously-refined models in psychology.
Treisman, A. M. and Gelade, G. (1980)
Where it began“A feature-integration theory of attention”
Cognitive Psychology, 12, 97-136
Single features pop out in parallel; combinations require serial attention to bind features into objects.
Wolfe, J. M. (2021)
State of the art“Guided Search 6.0: An updated model of visual search”
Psychonomic Bulletin and Review, 28, 1060-1092
The current model of how the brain hunts: five sources of guidance steer attention, refined over six versions and forty years.
What we do and do not claim
Twin Hunt's near-miss lookalikes are engineered conjunction search. Faster hunting here means sharper binding here.