Personal Constructs Psychology (Kelly, 1955) is the field of this research. Its aim is validate/invalidate experimentally hypotheses of Transitions (emotions) that are "Professional Constructs" that the therapist may use to do a "Transitive Diagnosis". Here are presented two complementary studies. The first study compares the definitions of Transitions as defined by Kelly with those resulting from participants lived experiences. In the second study, the work of McCoy (1977) is enlarged to include a number of new emotions and to identify "transition's sequences" that can be used in clinical and psychotherapy. Research results validate Kelly's theory as "first person psychology " and the transitions sequences emerged are individually discussed and argued
