Text mining was used to analyze the TAT story used to determine the presence or absence of uncertainty motivation. Participants were 82 university students. The results show that: (1) Although there were few words specific to the stories judged to have uncertainty motivation, the words "microscope,""medicine," and "life" tended to be used in this story. (2) There were relatively many words that were used only in the stories without uncertainty motivation, such as the words "friend," "early," "end," "I," "fork,""walk," and "home". (3) No clear co-occurrence relationship could be found between the words.
