The Curve Of Forgetting (1912) - Couverture souple

Bean, Charles Homer

Couverture souple

ISBN 10 : 1167037790 ISBN 13 : 9781167037795

Editeur : Kessinger Publishing, 2010

Synopsis

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

A propos du livre

Présentation de l'éditeur

An excerpt from the beginning of CHAPTER I - Historical Survey,

THE problems that present themselves in connection with the topic of forgetting are (1) the rate at which forgetting progresses, (2) the form of the curve showing the relation of forgetting to the lapse of time, and (3) whether there are any constant relations between either the rate of forgetting or the shape of this curve, on the one hand, and, on the other, the kinds of subject matter or the kinds of reagents, or the amount or manner of the practise or learning.

The first application of modern scientific methods in the study of memory and of forgetting was the work of Ebbinghaus, which he published in 1885. Ebbinghaus assumed that when experience has weakened in its susceptibility to recall the remaining association strength can be measured best by the number of repetitions that it saves in relearning. Another person served him as subject in preliminary experiments; but in the principal experiments Ebbinghaus acted both as experimenter and subject. As he admits, his results are, therefore, of much less value especially for general psychology. The material learned in the experiments in forgetting consisted of 163 series, each containing 13 nonsense syllables. Every syllable contained a consonant, a vowel and then another consonant. Ebbinghaus took especial pains to avoid any succession of letters or of syllables that might suggest devices in learning. He read a series and then recalled as many syllables as possible until he reproduced the whole series once without an error. Whenever a series could not be promptly recalled in its entirety he read the remainder from the paper. The rate was kept constant at 150 syllables per minute by means of a metronome. Seven of the series were memorized one day and one was relearned at each of seven intervals of various lengths. The data of the shorter periods were the average results of from 12 to 16 series, and those of the larger intervals of from 22 to 26 series.

The results of this investigation of Ebbinghaus I present in the form of a table of arrays and a table of central tendencies and measures of variability. It can be seen that the portions of the work that were necessary to be performed again were approximately, after 20 minutes 1/3, after 1 hour 1/2, after 9 hours 2/3—, after 24 hours 2/3 +, after 6 days 3/4, and after 31 days 4/5. His statement of his conclusions from these results is, "The ratio of what is retained to what is forgotten varies inversely as the logarithm of the time.''

Besides being the first experimental research in this group of phenomena, this was the first very extended laboratory investigation of the mental processes that are not closely paralleled by definite, commensurate, physical stimuli. In addition to this, all who have carried on experimental investigations in memory, and most especially in forgetting, will agree that the task as it was performed by Ebbinghaus required closeness of application and patient persistence that was nothing less than heroic. However, the fact that his work has more than one claim to a place among pioneer achievements is sufficient excuse for several imperfections in his methods.

Présentation de l'éditeur

This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.

Détails de l'édition

• Éditeur: Kessinger Publishing
• Date d'édition: 2010
• Langue: anglais
• ISBN 10: 1167037790
• ISBN 13: 9781167037795
• Reliure: Broché
• Nombre de pages: 54
• Coordonnées du fabricant: non disponible
• Personne responsable: KreGa Onlinehandel GmbH; 4950000000000; info@krega-onlinehandel.de; ; Birkenweg 31; Brakel; 33034; Allemagne