German - Psychologist | January 24, 1850 - February 26, 1909
Series of syllables which have been learned by heart, forgotten, and learned anew must be similar as to their inner conditions at the times when they can be recited.
Hermann Ebbinghaus
HeartForgottenMustBeenInner
The aim of the tests carried on with these syllable series was, by means of repeated audible perusal of the separate series, to so impress them that immediately afterward they could voluntarily be reproduced.
AimImpressTestsMeansRepeated
The amount of detailed information which an individual has at his command and his theoretical elaborations of the same are mutually dependent; they grow in and through each other.
GrowInformationSameIndividualHis
The constant flux and caprice of mental events do not admit of the establishment of stable experimental conditions.
AdmitEventsMentalConstantStable
The relation of repetitions for learning and for repeating English stanzas needs no amplification. These were learned by heart on the first day with less than half of the repetitions necessary for the shortest of the syllable series.
LearningHeartDayFirstEnglish
The school-boy doesn't force himself to learn his vocabularies and rules altogether at night, but knows that be must impress them again in the morning.
MorningNightLearnRulesImpress
These syllables, about 2,300 in number, were mixed together and then drawn out by chance and used to construct series of different lengths, several of which each time formed the material for a test.
TimeTogetherChanceTestOutUsed
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