He gave 4 different word lists to participants to remember

-Group 1 = words sound similar (acoustically similar) e.g. cat, hat, mat

-Group 2 = words sound different (acoustically dissimilar) e.g. dog, house, pit

-Group 3 = words with similar meanings (semantically similar) e.g. big, large, great

-Group 4 = words with different meanings (semantically dissimilar) e.g. good, huge, hot

He found that after a short interval of hearing the list and recalling (STM) participants did worse with the acoustically similar words.

He found that after a longer interval (LTM) participants did worse with the semantically similar words.

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