She held experiments that found out what parts of situations could produce feelings of familiarity. She had people study a list of random words. During a word recognition test, some of the words on the test resembled the earlier words in the way they sounded, and the volunteers reported a sense of familiarity for the new words, even when they could not remember what words had reminded them of those words. Other research had found that people would feel feelings of familiarity with situations that looked slightly similar to places they had been before.