LEARN Logs
Interleaved practice scored 77% vs 38% for blocked on a next-day test (d ≈ 1.21) — and the entire gain came from eliminating discrimination errors.
Taylor and Rohrer had fourth-graders practice four types of prism problem either blocked or interleaved. A day later the interleaver...
Q What is the KEY limit on elaboration and self-explanation?
The explanation must be generated by YOU — reading someone else's is far weaker — and you need enough prior knowledge to generate a CORRECT explanation, or you reinforce misconceptions.
The power is in the generation. Studying a worked, expert explanation is passive and produces...
Q What is the Pomodoro technique, and who created it?
A time-management method (Francesco Cirillo) of working in roughly 25-minute focused blocks, each followed by a 5-minute break, with a longer break after every four blocks.
The named "pomodoros" (Italian for tomatoes, after Cirillo's tomato-shaped kitchen timer) give structure to...
Q What is the "generative principle" of note-taking, and why does it make the method matter less than...
Notes help most when they force ACTIVE processing — reorganising, summarising, connecting, paraphrasing — not verbatim copying; so what your brain does matters more than which method you use.
The value of note-taking is not the artifact of notes; it's the mental work of producing...
Q What is the "forgetting curve," and who first measured it?
Hermann Ebbinghaus (1885) showed that memory decays roughly exponentially: a steep drop within the first day, then a slow flattening.
Ebbinghaus, a German psychologist, ran the first rigorous memory experiments on a single subject — himself. He memorized long lists of "nonsense s...
Q Why does spacing work, in terms of storage and retrieval strength?
A gap lets retrieval strength drop, so the next review becomes an effortful retrieval — which is exactly what adds the most storage strength.
Spacing and the storage/retrieval theory are two views of the same mechanism. When you leave time between sessions, retrieval strength dec...
Q What is "metacognition," and why does it decide how well you study?
Metacognition is "thinking about thinking" — monitoring and regulating your own learning as it happens.
It has two parts: monitoring (noticing what you do and don't know) and regulation (changing what you do next — more practice here, move on there). Almost every study decision y...
Q What is "dual coding," and why does it strengthen memory?
Dual coding pairs a VERBAL representation (words) with a VISUAL one (diagram, timeline, labelled sketch) so a single idea is encoded through two complementary channels.
Encode an idea only in words and you have one route back to it. Encode it in words and a meaningful image and y...
Q MYTH: "We only use 10% of our brain." Verdict?
DEBUNKED. Imaging shows essentially all brain regions are active across a normal day, and the brain is metabolically expensive precisely because it's all in use.
The whole organ pulls its weight: the brain consumes about 20% of the body's energy while making up only about 2% of i...
Q What was the headline result of Roediger & Karpicke (2006) one WEEK later?
The tables flipped: the retrieval group recalled 61% versus 40% for the re-study group.
One week after studying, the group that had tested themselves decisively beat the group that had re-read: 61% vs 40%.
The lesson isn't subtle: re-study wins in the next five minutes; retrieval...