Science
The Learning Jet did not invent these ideas. Memory laboratories have tested them for more than a century. We put the reliable ones in an app students will actually open.
A fair claim: using the app is not a published clinical trial of The Learning Jet itself. The claim is narrower and stronger. The habits it enforces — retrieve, wait, retrieve again, connect ideas — are among the best-supported techniques in educational psychology.
1885
Hermann Ebbinghaus
Memory: A Contribution to Experimental Psychology
Without review, recall of new material drops quickly, then more slowly. Waiting too long means relearning. Reviewing just as the memory weakens is cheaper than starting over.
In the app. The Learning Jet puts a note back in front of you on a rising schedule instead of leaving it in a pile you never open again.
2006
Cepeda, Pashler, Vul, Wixted, and Rohrer
Psychological Bulletin, 132(3)
A quantitative review of 839 assessments found that spacing study over time beats massing the same time into one sitting. The best gap grows with how long you need to remember.
In the app. Minute gaps handle tonight’s lecture. Day gaps (1, 3, 6, 9, 15, 30) stretch toward exams and beyond.
2006
Roediger and Karpicke
Psychological Science, 17(3)
Taking a test on material produces better long-term memory than spending the same time restudying it. The act of retrieving is the learning event.
In the app. Revision hides the answer until you try. Cards, MCQ, and true/false are tests, not rereading.
2008
Karpicke and Roediger
Science, 319(5865)
Repeated studying after you can already recall an item adds little. Repeated retrieval of that item is what keeps it available later.
In the app. Each successful recall still schedules another visit. You do not drop a note just because you got it right once.
2013
Dunlosky, Rawson, Marsh, Nathan, and Willingham
Psychological Science in the Public Interest, 14(1)
A landmark review rated practice testing and distributed practice as high-utility techniques. Highlighting, rereading, and cramming ranked much lower.
In the app. The app is built around those two high-utility habits: quiz yourself, and space it.
1967
Paul Pimsleur
The Modern Language Journal, 51(2)
Pimsleur argued for expanding intervals measured in minutes, then hours and days, so a new item is asked for just before it would be lost.
In the app. The 1, 3, and 9 minute buttons follow that early schedule. The 1-day button is the first hand-off into longer memory.
1972
Sebastian Leitner
So lernt man lernen
Cards that you miss return sooner. Cards that you know move to boxes you open less often. Effort is spent where memory is weak.
In the app. Choosing 1 minute versus 1 day after each card is the same idea: short path for shaky notes, long path for stable ones.
2006
Nesbit and Adesope
Review of Educational Research, 76(3)
A meta-analysis found that studying with concept maps is associated with stronger knowledge retention and transfer than studying text or outlines alone.
In the app. Mind maps live beside notes so a fact sits in a network, not a vacuum.
1994 onward
Elizabeth and Robert Bjork
Essays in Honor of William K. Estes, and later reviews
Conditions that feel harder in the moment — spacing, testing, mixing — often produce stronger memory than fluent, easy rereading.
In the app. Show answer is delayed on purpose. A little struggle now is the point.
You do not need to memorise the citations. You need a queue of notes and a few honest attempts.
