Answer:
Scientific method
Explanation:
Hermann Ebbinghaus was a psychologist who studied learning and memory. Harmann started his experiment with recalling the words, how many words he could recall. The association learning is a process through one can learn the words easily and recall easily. So Herman used thousands of nonsense syllables by using only consonant vowel consonant patterns such as pat, but cey, etc. Herman sees the list for a fraction of minutes and recalls the words. He recites the words until he did not memorize the list. He used different lengths and different times of interval and noted down how much time is taken to forgetting. He found that he recalled a meaningful word ten times than a nonsense syllable. He found that a person forgotten 60% after 24 hours.