Hermann Ebbinghaus

Lore & Background

Ebbinghaus was born in Barmen, in the Rhine Province of the Kingdom of Prussia, the son of a wealthy merchant. He attended the University of Bonn, initially studying history and philology, but developed an interest in philosophy. His studies were interrupted by service in the Franco-Prussian War, after which he completed his dissertation on Eduard von Hartmann's philosophy of the unconscious and received his doctorate in 1873. He later tutored in England and France, and in London discovered Gustav Fechner's book on psychophysics, which inspired his memory experiments. He founded the third psychological testing lab in Germany and published his seminal work 'Über das Gedächtnis' in 1885, the same year he became a professor at the University of Berlin.

Reader's Guide

Ebbinghaus's significance lies in his demonstration that higher mental processes, such as memory, could be studied experimentally, challenging the prevailing view of his time. To control for confounding variables, he invented nonsense syllables—consonant-vowel-consonant combinations without prior meaning—and used himself as the sole subject in rigorous experiments. His findings include the forgetting curve, which shows exponential loss of information with the sharpest decline in the first twenty minutes; the learning curve, describing how repetition leads to diminishing returns; and the serial position effect, encompassing primacy and recency effects. He also discovered savings, the phenomenon where relearning a forgotten list is faster than initial learning. Despite limitations—such as using only himself as subject, which reduced generalizability—his work laid the foundation for experimental psychology of memory and influenced future intelligence testing. His publications, including 'Die Grundzüge der Psychologie' and 'Abriss der Psychologie', remained influential long after his death from pneumonia in 1909.

Did You Know?

• Ebbinghaus served with the Prussian Army in the Franco-Prussian War in 1870.
• He created 2,300 nonsense syllables for his memory experiments.
• He founded the third psychological testing lab in Germany, after Wilhelm Wundt and Georg Elias Müller.
• His work on a commission studying children's mental ability decline during the school day laid groundwork for future intelligence testing.