The science behind the challenges
Every game stands on published work. Tap one to see the paper and the plain-words story.
Priming: why your mouth answers before your mind
Meyer (1971) · Journal of Experimental Psychology
The reflex answer, and the pause that beats it
Frederick (2005) · Journal of Economic Perspectives
Why chance feels wrong
Kahneman (1972) · Cognitive Psychology
The word that fights the ink
Stroop (1935) · Journal of Experimental Psychology
The mind's whiteboard
Baddeley (1974) · The Psychology of Learning and Motivation
When the rule changes under you
Berg (1948) · Journal of General Psychology
The skill of not pressing
Logan (1984) · Psychological Review
What attention deletes
Rensink (1997) · Psychological Science
Finding the twin in the crowd
Treisman (1980) · Cognitive Psychology
Turning shapes inside your head
Shepard (1971) · Science
The click of a stuck problem
Duncker (1945) · Psychological Monographs
The body's clock
Repp (2005) · Psychonomic Bulletin and Review
Why 21 short days beat one long day
Cepeda (2006) · Psychological Bulletin
Knowing how sure to be
Lichtenstein (1977) · Organizational Behavior and Human Performance
Moving your mind the right amount
Phillips (1966) · Journal of Experimental Psychology
The clock in your head
Zakay (1997) · Current Directions in Psychological Science
Remembering to remember
Einstein (1990) · Journal of Experimental Psychology: Learning
The pull of a number you just saw
Tversky (1974) · Science
Same question, different words
Tversky (1981) · Science
The cards that could prove you wrong
Wason (1968) · Quarterly Journal of Experimental Psychology
Trying to break your own idea
Wason (1960) · Quarterly Journal of Experimental Psychology