Study guidesbuilt on learning science

Every guide is grounded in cognitive science research, primarily Roediger & Karpicke (2006) on retrieval practice and Dunlosky et al. (2013) on effective study strategies. We focus on active recall and spaced repetition because they are the two most heavily validated techniques in the field.

If you want to understand the method first, start with the Active Recall or Spaced Repetition study method guides. If you already know the basics and want subject-specific advice, jump straight into the subject guide that matches what you are studying. The guides cross-link to each other, so you can follow the trail from whichever angle makes sense for you.

No. Every technique described in these guides works with paper flashcards, a notebook, or any spaced repetition app. Lexie makes the workflow faster by generating questions from a photo of your notes and scheduling reviews automatically, but the underlying methods are what matter.

Most students who switch from rereading to active recall notice a difference within one exam cycle. The research shows retention improvements of roughly 2x after a single week of practice testing compared to passive review. The bigger gains compound over a semester as spaced repetition locks material into long-term memory.

The guides apply to any student learning academic material: high school, college, graduate programs, and adult learners. We have specific guides for GCSE, A-Levels, AP exams, and general study methods. The cognitive science underlying these techniques is the same at every level.