[Solved] What sexual behaviors constitute autoerotic behavior? Ebbinghaus: Refers to Hermann Ebbinghaus, a psychologist who pioneered the experimental study of memory and discovered the forgetting curve and the spacing effect. Information Forgotten: The loss of the ability to recall or recognize information that was previously learned or experienced. Nonsense Syllables: Combinations of letters that do not form actual words, used in psychological experiments to study memory and learning. Hermann Ebbinghaus: A German psychologist famous for his pioneering work on the study of memory, including the forgetting curve and the spacing effect.