Patricia Gunn's tarot card activity

In Patricia Gunn's mediumship circle we often do this activity:  Using a tarot deck each person picks a card.  They look at the card and then place it on the table face down.  The cards on the table are shuffled and then each person picks a card.  They tried to say whose card it is and then when the card's owner is identified they do an intuitive reading of the person based on the card.  Then they turn to mediumship and try to get a reading for that person.