In studying memory, ebbinghaus was concerned that his data would be affected by the fact that he was more familiar with some words than others. he avoided this problem by using: a) real words that were familiar but very short. b) real words that were unfamiliar to him. c) three-letter nonsense words. d) strings of digits.

C) three-letter nonsense words

Explanation:

Ebbinghaus explained in his theory of memory and forgetting, that the memory of a person decreases over time if it is un-learned. He believed that a person starts losing his or her memory in a matter of days or weeks unless it is being revised. He found that a person forgets more frequently just after learning rather than recalling it over time. He used non-sense syllables in his memory research because he was interested in understanding how memories were formed. So, he decided to take pure material, uncontaminated by previous learning.

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