Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Amanda Bellucco-Chatham is an editor, writer ...

Journal of Epidemiology and Community Health (1979-), Vol. 60, No. 1 (January 2006), pp. 24-30 (7 pages) Study objective: The impact of isolated gatekeeping on health care costs remains unclear. The ...

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Erika Rasure is globally-recognized as ...

Technical efficiency refers to how productive a business can be given the fewest inputs, or resources, necessary to do the job. An input is any quantifiable resource necessary to create an output, or ...

Weak form market efficiency is a concept that suggests past stock prices and trading volumes do not predict future stock prices. In a weak form efficient market, all historical information is already ...

Potential gains in targeted sectors and overall are not guaranteed and depend on careful policy design and implementation ...

Louis Kaplow proposes a two-step methodology for normative policy analysis and illustrates it using various policy reforms. The first step is to identify efficiency gains when hypothetical lump-sum ...