Über das Gedächtnis¶
Ebbinghaus, H. (1885). Über das Gedächtnis: Untersuchungen zur experimentellen Psychologie.
Cited by¶
5 citations across 5 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Learning
- The essential commitment is a durable, experience-driven self-update of an agent's internal state that carries forward to alter later behavior, distinguishing it from a one-off response that leaves the agent unchanged — a durability requirement Thorndike (1898) established in his law-of-effect work and that Ebbinghaus (1885) made quantitatively precise through his retention curves.
This sourceFounding quantitative study of retention and forgetting; the forgetting curve makes durability of learned material measurable and establishes that durability is an empirically tractable property of an experience-driven internal update.
Supported in partVerified against the work's full text
Ebbinghaus quantifies retention over time with savings measures and a fitted forgetting formula, supporting the 'quantitatively precise' retention-curve half of the sentence.
“After 24 hours about one third was always remembered; after 6 days about one fourth, and after a whole month fully one fifth of the first work persisted in effect.”
- The essential commitment is a durable, experience-driven self-update of an agent's internal state that carries forward to alter later behavior, distinguishing it from a one-off response that leaves the agent unchanged — a durability requirement Thorndike (1898) established in his law-of-effect work and that Ebbinghaus (1885) made quantitatively precise through his retention curves.
- Spaced Repetition
- The empirical foundation rests on Hermann Ebbinghaus's 1885 systematic documentation of the spacing effect in Über das Gedächtnis (Memory: A Contribution to Experimental Psychology), which established that information reviewed at spaced intervals is retained substantially longer than information reviewed at equivalent total time in massed blocks.
This sourceFounding quantitative study of retention and forgetting; the forgetting curve makes durability of learned material measurable and establishes that durability is an empirically tractable property of an experience-driven internal update.
Supported in partVerified against the work's full text
Ebbinghaus reports that 38 repetitions spread over three days matched 68 massed repetitions, and infers spacing is more advantageous, from his own limited experiments.
“38 repetitions, distributed in a certain way over the three preceding days, had just as favorable an effect as 68 repetitions made on the day just previous”
- The empirical foundation rests on Hermann Ebbinghaus's 1885 systematic documentation of the spacing effect in Über das Gedächtnis (Memory: A Contribution to Experimental Psychology), which established that information reviewed at spaced intervals is retained substantially longer than information reviewed at equivalent total time in massed blocks.
- Zone of Proximal Development (ZPD)
- Spaced-practice scheduling — traceable to Ebbinghaus (1885) and consolidated in the meta-analytic synthesis of Cepeda, Pashler, Vul, Wixted, and Rohrer (2006) — increasingly informs ZPD-aligned review timing.
This sourceFounding quantitative study of retention and forgetting; the forgetting curve makes durability of learned material measurable and establishes that durability is an empirically tractable property of an experience-driven internal update.
- Spaced-practice scheduling — traceable to Ebbinghaus (1885) and consolidated in the meta-analytic synthesis of Cepeda, Pashler, Vul, Wixted, and Rohrer (2006) — increasingly informs ZPD-aligned review timing.
Domain-specific¶
- Fieldnote Backfill
- When the write-up occurs hours or days later, Ebbinghaus-style decay has reduced verbatim recall to fragments
This sourceThe original forgetting-curve measurements, showing retention of learned nonsense-syllable series falling steeply within the first hour and more slowly over the following days.
Supported in partVerified against the source
- When the write-up occurs hours or days later, Ebbinghaus-style decay has reduced verbatim recall to fragments
Mechanisms¶
- Decay Curve Fitting
- Decay Curve Fitting takes these four points and fits an exponential-style forgetting curve — the shape long associated with Ebbinghaus's retention work
This sourceReports a forgetting pattern with the steepest loss soon after learning and a progressively flatter decline thereafter.
- Decay Curve Fitting takes these four points and fits an exponential-style forgetting curve — the shape long associated with Ebbinghaus's retention work
Verification¶
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Links previously used in the corpus¶
Before the registry existed this work was also linked 1 other way.
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