Abstract
The author describes the Temple Index of Functional Fluency (TIFF©). She explains the construction and concepts of the functional fluency (FF) model, for which she won the 2014 Eric Berne Memorial Award. The theoretical and practical links between the model and ego state theory are highlighted, and a case example is provided to illustrate the TIFF process. The author expresses appreciation for the support and help she received in the creation and development of FF and the TIFF.