Replication and Analysis of Ebbinghaus' Forgetting Curve.

We present a successful replication of Ebbinghaus' classic forgetting curve from 1880 based on the method of savings. One subject spent 70 hours learning lists and relearning them after 20 min, 1 hour, 9 hours, 1 day, 2 days, or 31 days. The results are similar to Ebbinghaus' original data...

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Main Authors: Jaap M J Murre, Joeri Dros
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2015-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4492928?pdf=render
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author Jaap M J Murre
Joeri Dros
author_facet Jaap M J Murre
Joeri Dros
author_sort Jaap M J Murre
collection DOAJ
description We present a successful replication of Ebbinghaus' classic forgetting curve from 1880 based on the method of savings. One subject spent 70 hours learning lists and relearning them after 20 min, 1 hour, 9 hours, 1 day, 2 days, or 31 days. The results are similar to Ebbinghaus' original data. We analyze the effects of serial position on forgetting and investigate what mathematical equations present a good fit to the Ebbinghaus forgetting curve and its replications. We conclude that the Ebbinghaus forgetting curve has indeed been replicated and that it is not completely smooth but most probably shows a jump upwards starting at the 24 hour data point.
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spelling doaj.art-1eb262a059254c17b017e217aee289d02022-12-22T02:43:17ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01107e012064410.1371/journal.pone.0120644Replication and Analysis of Ebbinghaus' Forgetting Curve.Jaap M J MurreJoeri DrosWe present a successful replication of Ebbinghaus' classic forgetting curve from 1880 based on the method of savings. One subject spent 70 hours learning lists and relearning them after 20 min, 1 hour, 9 hours, 1 day, 2 days, or 31 days. The results are similar to Ebbinghaus' original data. We analyze the effects of serial position on forgetting and investigate what mathematical equations present a good fit to the Ebbinghaus forgetting curve and its replications. We conclude that the Ebbinghaus forgetting curve has indeed been replicated and that it is not completely smooth but most probably shows a jump upwards starting at the 24 hour data point.http://europepmc.org/articles/PMC4492928?pdf=render
spellingShingle Jaap M J Murre
Joeri Dros
Replication and Analysis of Ebbinghaus' Forgetting Curve.
PLoS ONE
title Replication and Analysis of Ebbinghaus' Forgetting Curve.
title_full Replication and Analysis of Ebbinghaus' Forgetting Curve.
title_fullStr Replication and Analysis of Ebbinghaus' Forgetting Curve.
title_full_unstemmed Replication and Analysis of Ebbinghaus' Forgetting Curve.
title_short Replication and Analysis of Ebbinghaus' Forgetting Curve.
title_sort replication and analysis of ebbinghaus forgetting curve
url http://europepmc.org/articles/PMC4492928?pdf=render
work_keys_str_mv AT jaapmjmurre replicationandanalysisofebbinghausforgettingcurve
AT joeridros replicationandanalysisofebbinghausforgettingcurve