Recently a psychology student posted a copy of the “Four Card Problem” which is a logic puzzle where players must flip over the minimum number of cards to possibly prove or disprove a rule. The way to play is quite simple, yet fewer than 10% of university students have been able to successfully answer it. Ready to step up and give it a whirl?!
Not you, psych students and graduates who have probably already seen this! Back off for a sec and give the rest of us a try first.