Epistemic Processes : A Basis for Statistics and Quantum Theory This book discusses a link between statistical theory and quantum theory based on the concept of epistemic processes which can be e.g. statistical investigations or quantum mechanical measurements and refer to processes that are used to gain knowledge about something. The book addresses a range of topics including a derivation of the Born formula from reasonable assumptions a derivation of the Schrödinger equation in the one dimensional case and a discussion of the Bell inequality from an epistemic perspective. The book describes a possible epistemic foundation of quantum theory. Lastly it presents a general philosophical discussion of the approach which principally speaking is not restricted to the micro world. Hence the book can also be seen as a motivation for further research into quantum decision theory and quantum models for cognition. The book will benefit a broad readership including physicists and statisticians interested in the foundation of their disciplines philosophers of science and graduate students and anyone with a reasonably good background in mathematics and an open mind