1 / 8

The Forgetting Curve

The Forgetting Curve . The study of Ebbinghaus (1885):.

Audrey
Download Presentation

The Forgetting Curve

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Forgetting Curve The study of Ebbinghaus (1885): Hermann Ebbinghaus (1850-1902) was the first scholar who conducted experiments about memory, especially forgetting. He claimed that exact scientific research into memory can be done, in the same manner and with the same exactness as biological or chemical phenomena can be examined. Contributor © POSbase 2003

  2. The Forgetting Curve Ebbinghaus conducted self-experiments. This something done rarely nowadays because experimenters can influence the results if they know the hypothesis (experimenter-expectancy effect). However, the findings of Ebbinghaus have been confirmed even if the participants in the experiments did not what the purpose of the experiment was. © POSbase 2003

  3. 100% 100% % Retention % Retention 50% 50% 0% 0% Time Time The Forgetting Curve Ebbinghaus was interested in the question: Is forgetting a linear or a non-linear process? © POSbase 2003

  4. The Forgetting Curve Ebbinghaus learned a list of meaningless syllables of the form consonant -- vocal – consonant, until he could reproduce the list at heart. Such syllables are not similar to everyday materials. Example:ZUV; XER; GUB; LIW; SAB; QOR; DAF; HUX etc. © POSbase 2003

  5. The Forgetting Curve He measured how long it took to learn the list of syllables. After different time intervalls – e.g., one hour, one day, two days – he relearned the same syllable list once again. He measured the time it took to relearn the list and then calculated how much time he saved at relearning, in %. © POSbase 2003

  6. The Forgetting Curve Ebbinghaus found a logarithmic curve (x-axis categorical): © POSbase 2003

  7. The Forgetting Curve And here the same curve (x-axis true units): © POSbase 2003

  8. The Forgetting Curve The forgetting curve has been replicated many time and with different materials (e.g., Bahrick & Phelps, 1987; McKenna & Glendon, 1985). Why do we forget? Some theorists thought that forgetting is due to trace decay whereas others argued that forgetting is due to interference. © POSbase 2003

More Related