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  • The TDF Pattern Inventory


    The personality inventory identifies which of the six TDF patterns you most resemble. It is a statistically valid and reliable scoring instrument that takes approximately 20 minutes to complete. An access code will be emailed to you from our office. What’s your pattern?


  • Who Are You? A Short Book on Perceptual Styles



    You have a style of your own. Your family knows it; your friends know it; your colleagues know it. You have a certain way of acting and interacting. You have a style. This is why you are comfortable in some settings and roles and not in others. This is why there are interactions you handle beautifully and interactions that are clumsy.

    Wouldn’t it help to better understand your style? And other people have different styles. Wouldn’t you like to understand them better and live and work with them more successfully?

    This short, friendly book will give you some fascinating answers. The tool this book gives you is TDF – an analysis of perceptual styles which TDF International has taught to more than 400,000 people in more than 25 countries around the world. And they’ve loved it. It’s simple and it works. And now you can have this tool. This is the personal guide you have been looking for.



  • Finding Your Place – The TDf Map (book)


    Written by David Farr and Bill Roberts, this book introduces readers to the TDf® theory. TDF is a tool for knowing yourself better and knowing others better. We are different. I have skills, potentials, and limits. You have different skills, potentials and limits. This is confusing territory. We need a map and TDf is that map.