A New Theory About Language (Hardback) + Reverse Speech: Hidden Messages in Human Communication (Special Offer)

Hidden Messages in Human Communication was published in 1991 – it covers basic theories, giving examples and case studies – it is beautifully presented in a hardback cover and is a must addition in any avid researchers library.

David's latest book – ‘A New Theory About Language’ - Over the last 30-years Reverse Speech has, as a result of constant research and testing evolved and developed to become what it is today.

In this book, David reveals for the very first time, the results of his latest research on the subject. Research he hasn’t shared before, that will advance Reverse Speech and propel it towards being embraced by the entire scientific community.