Where it is used
Each entry identifies the volume, edition, chapter or appendix in which the work appears.
The evidence behind the series
Follow the research.
Explore every source.
Browse the scientific research and professional literature used across all seven volumes of The Science of Learning for Educators.
7book volumes
8author ranges
1searchable library
Search the collection
Find a paper, author or idea.
Choose an author range, search a title or concept, or narrow the collection by source type. Open any result to see where it appears in the books, read its evidence summary and follow available source links.
2 references
-
- Vol 1 TE: App A
forgetting curvesavings methodnonsense syllablesspaced repetitionrelearningmemory retentionexperimental memory measurementBook Evidence summaryAt a glance
Ebbinghaus established an experimental programme for studying memory by learning and relearning lists of deliberately meaningless syllables under controlled conditions, largely using himself as the participant.
Key ideas
He measured retention through “savings”: how much less time or repetition was needed to relearn material after a delay than during initial learning. The resulting observations showed rapid early loss followed by slower decline, later popularised as the forgetting curve. The work also examined effects of list length, number of repetitions, time, and repeated learning, providing early evidence that spaced repetitions can be more efficient than the same practice massed together. The famous curve is not a universal timetable for every learner or kind of knowledge; it arose from particular materials, one intensively studied person, and a savings measure rather than simple percent recalled.
Why it matters
Its enduring contribution is methodological and conceptual: forgetting changes systematically with conditions, and durable learning can be investigated through controlled encoding, delay, retrieval, and relearning.
-
- Vol 1 RE: Chapters 1, 5, 8, App A
forgetting curvesavings methodnonsense syllablesdistributed practicerepetition effectsmemory retentionquantitative memory researchBook Evidence summaryAt a glance
In this foundational experimental study, Ebbinghaus investigates memory with lists of nonsense syllables constructed to reduce the influence of existing meaning and association. Serving as his own participant across extensive trials, he standardises presentation and mastery, then measures retention by the time or repetitions saved when relearning material after intervals.
Key ideas
He reports the characteristic pattern of steep initial forgetting followed by a progressively slower decline, alongside effects of repetition, list length, and the distribution of practice. Repeated learning strengthens later savings, and distributing repetitions can yield more durable results than concentrating them in one sitting. These results helped make higher mental processes accessible to quantitative experiment. The findings should not be treated as a precise universal decay schedule: the design used one participant, artificial verbal material, and a specific savings measure.
Why it matters
The broader educational implication is that memory depends on time and practice conditions, and that planned revisiting and retrieval are needed if learning is expected to endure.
A transparent research trail
More than a bibliography.
What it contributes
Evidence summaries explain the central idea and why the source matters to educators.
How to access it
Entries link to lawful full text where available, or to a publisher, library or purchase page.
Edition abbreviations
- TE
- Teacher Edition
- PE
- Practice Edition
- RE
- Research Edition
Citation checks
References are checked against publisher records, scholarly indexes, DOI or ISBN metadata, repositories and author records where available. An entry marked [Citation not verified] preserves the wording found in the relevant volume without attributing findings to an unconfirmed work.
From sources to a coherent pathway