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.

Systems theory was not originally a business theory. Indeed, systems theory was proposed in the 1940s by biologist Ludwig von Bertalanffy, say Francis Heylighen and Cliff Joslyn in their article, ...

A theory never becomes a fact. It is an explanation of one or more facts. Many scientists, including the late Stephen Hawking, are happy to say that a theory never becomes a fact. It is always an ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

When asked the question, "What is a theory?" most of my students (regardless of age or educational level) respond with an explanation that is akin to "a reasonable, educated/informed guess." Indeed, ...

Charles Darwin's Theory of Evolution is one of the most solid theories in science. But what exactly is it? When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...