Transactional analysis, developed by psychiatrist Eric Berne, is a form of modern psychology that examines a person's relationships and interactions. Berne took inspiration from Sigmund Freud's theories of personality, combining them with his own observations of human interaction in order to develop transactional analysis. In therapy, transactional analysis can be used to address one's interactions and communications with the purpose of establishing and reinforcing the idea that each individual is valuable and has the capacity for positive change and personal growth.