Dr. Eudora Fletcher (Mia Farrow) is a psychiatrist who wants to help Zelig with this strange disorder when he is admitted to her hospital. Through the use of hypnotism, she discovers Zelig yearns for approval so strongly that he physically changes to fit in with those around him. Dr. Fletcher eventually cures Zelig of his compulsion to assimilate, but goes too far in the other direction; for a brief period he is so intolerant of others' opinions that he gets into a brawl over whether or not it is a nice day.