How the brain stores and retrieves information. Play Memory and Learning trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
When you remember how to ride a bicycle without consciously thinking about the steps, you're using this type of "body memory" that survives even when other memories fade.
Difficulty: EasyIn Baddeley's model, this component stores about 2 seconds of speech sounds through subvocal rehearsal—which is why phone numbers are hard to remember if they take longer to say.
Difficulty: MediumIn contrast to standard testing effect findings, errorful generation followed by feedback sometimes produces better learning than error-free study, depending on error type and correction timing.
Difficulty: HardThis phenomenon explains why you can recognize your friend's face instantly but struggle to describe it in detail to a sketch artist.
Difficulty: EasyWhen practicing skills, a 24-hour rest period produces substantial improvement without additional practice—a phenomenon suggesting the brain continues learning offline.
Difficulty: MediumThe engram amnesia hypothesis proposes that many cases of amnesia involve retrieval failure rather than storage failure, since engrams persist and can be artificially reactivated.
Difficulty: HardBreaking a phone number into groups of three or four digits rather than memorizing ten individual numbers demonstrates this capacity-boosting technique.
Difficulty: EasyAfter brain damage, some patients can learn new facts but not remember learning them, while others show the reverse—suggesting these are separate systems with different neural bases.
Difficulty: Medium