Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Suzanne is a content marketer, writer, and ...

Theory guides teaching, patient care, and research. Most are unaware of psychiatry’s and medicine’s guiding theory. Their present reductionistic theory has been discarded by all other sciences.

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Robert Kelly is managing director of ...